| Names | |
|---|---|
| Preferred IUPAC name | 5-amino-3-sulfanyl-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]pyrazole |
| Other names | Penoxsulam intermediate 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)-1H-pyrazole 2,6-Dichloro-4-trifluoromethylphenyl pyrazole intermediate |
| Pronunciation | /faɪ-əˈmiːnəʊ-θriː-mɜːrˈkæp.təʊ-waɪn-ˈtuː.sɪks daɪˈklɔː.rəʊ-fɔː ˈtrɪ.fluːəˌmɛθ.əlˈfiː.nɪl-paɪˈræz.əʊl/ |
| Identifiers | |
| CAS Number | 31543-58-3 |
| 3D model (JSmol) | `3Dmol='C1=CC(=C(C(=C1Cl)N2C(=NN=C2N)S)Cl)C(F)(F)F'` |
| Beilstein Reference | 2042264 |
| ChEBI | CHEBI:92143 |
| ChEMBL | CHEMBL1494890 |
| ChemSpider | 12587142 |
| DrugBank | DB08435 |
| ECHA InfoCard | 03b581f6-c34b-4b5c-8bc6-0deac6c4a5b7 |
| Gmelin Reference | 786492 |
| KEGG | C17030 |
| MeSH | D017770 |
| PubChem CID | 660430 |
| RTECS number | UU8063000 |
| UNII | RJ39Z1G1HL |
| UN number | UN3339 |
| CompTox Dashboard (EPA) | DTXSID60706958 |
| Properties | |
| Chemical formula | C10H5Cl2F3N3S |
| Molar mass | 369.13 g/mol |
| Appearance | white to light yellow powder |
| Odor | Odorless |
| Density | 1.69 g/cm³ |
| Solubility in water | Insoluble in water |
| log P | 1.85 |
| Vapor pressure | Vapor pressure: 2.98E-9 mmHg at 25°C |
| Acidity (pKa) | 7.8 |
| Basicity (pKb) | pKb = 3.34 |
| Magnetic susceptibility (χ) | −78.5×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.653 |
| Dipole moment | 3.8697 Debye |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 385.48 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -405.3 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -859.6 kJ·mol⁻¹ |
| Pharmacology | |
| ATC code | M01AX25 |
| Hazards | |
| Main hazards | Harmful if swallowed, causes skin and eye irritation, may cause respiratory irritation. |
| GHS labelling | GHS05, GHS07 |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H302, H317, H319, H335 |
| Precautionary statements | P261, P264, P271, P272, P273, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P333+P313, P337+P313, P362+P364, P391, P501 |
| Flash point | > 215.7 °C |
| Lethal dose or concentration | LD₅₀ (oral, rat): > 5000 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral-rat LD50 > 5000 mg/kg |
| NIOSH | NA |
| PEL (Permissible) | Not established |
| Related compounds | |
| Related compounds | 3-Mercapto-1-phenyl-5-pyrazolone 5-Amino-3-mercapto-1-phenylpyrazole 1-(2,6-Dichloro-4-trifluoromethylphenyl)-3-mercapto-5-methylpyrazole 5-Amino-3-mercapto-1-(2-chlorophenyl)pyrazole 5-Amino-3-mercapto-1-(4-trifluoromethylphenyl)pyrazole |
| Attribute | Manufacturer Technical Commentary |
|---|---|
| Product Name & IUPAC Name | Product is most commonly referenced in our plant records as 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole. Within the IUPAC framework, the designation pinpoints the substitution pattern that influences both synthetic approach and downstream handling. Using the exact nomenclature ensures traceability for internal compliance, audit trails, and specification documentation. |
| Chemical Formula | C10H4Cl2F3N3S. During production, maintaining stoichiometry is essential to minimize side products and ensure batch uniformity, especially for intermediates where elemental balance directly affects functional group availability for subsequent synthesis. |
| Synonyms & Trade Names | Common trade names and synonyms encountered include: 5-Amino-3-mercapto-pyrazole derivative, AMTFP, and dichloro-trifluoromethylphenyl pyrazole. The naming convention used by clients often depends on the downstream application, with agrochemical formulators sometimes requesting the product under code-identified names specific to their registration dossiers. |
| HS Code & Customs Classification | HS Code assignment at export relies on the specific structure and intended end-use (primarily as an agrochemical intermediate or active), but in our experience, customs authorities classify this molecule under 2933.19 (heterocyclic compounds with nitrogen hetero-atom(s) only; other than those containing an unfused pyrazole ring). Final code selection should be confirmed in dialogue with local brokers, as granular differences emerge due to regulatory focus on fluorinated and chlorinated building blocks. |
In the production environment, 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole typically appears as an off-white to pale yellow solid. Color gradation and powder texture can shift according to grade, driven by impurity profile and batch-specific isolation conditions. Odor is negligible and usually not considered a critical release parameter due to the compound class.
Exact values reflect both the synthesis route and purification process. Melting range is influenced by final recrystallization solvent and drying regime; material held with higher low-level impurities may depress the onset of melting. Industrial batches are judged by consistency in melting behavior across scale-up, while bulk density informs drum and container selection. These parameters directly impact downstream solid handling and any further formulation or milling steps.
Process observations show this compound remains chemically robust within controlled ambient conditions. Decomposition or side-reaction sensitivity escalates under prolonged UV exposure, contact with oxidizing acids, or strong bases. Stability assessments anchor storage advisories, and are routinely backed by retention sample re-testing as part of long-term quality assurance.
Solubility profile varies with solvent polarity; moderate solubility is seen in common polar aprotic solvents, while limited dissolution occurs in water and non-polar organics. Operators adjust dissolution technique based on batch cleanliness and downstream processing—ensuring minimal particulate load and homogeneous concentrate feed is essential for process integrity.
Grade assignment stems from downstream application (pharmaceutical, agrochemical, or intermediate). Typical batch release hinges on:
Detailed specification thresholds and tolerances are determined during grade development and in consultation with end-users, with industrial and research grades subject to different standards.
Main impurities trace to incomplete conversion or side-reactions within cyclization or substitution steps. The acceptable impurity range is established by risk assessment and the demands of validated end-use processes. Sulfur-, amine-, and halogen-containing by-products appear based on reagent grade and reactor regime, so profiles are carefully scrutinized by advanced chromatographic techniques. Internal limits adjust as scale or raw supply chain evolves.
Analyses follow internally validated protocols aligned with compendial methods where appropriate. Release is based on convergence of multi-point data (chromatographic purity, structural identity, moisture, residual solvents). For export, country-specific documentation may dictate supplementary verification.
Selection focuses on lot history, trace impurity control, and supplier traceability. Chlorinated aromatics, sulfur sources, and hydrazine derivatives dominate supply chain review, with batch-specific qualification imperative for consistent output.
Manufacture proceeds through multi-step condensation and cyclization. Route choice considers yield efficiency, waste minimization, and ease of scaling. Reaction temperatures, solvent loads, and order of reagent addition are actively optimized for robustness and reproducibility, not only lab-scale yield.
Critical points center on temperature hold, agitation profiles, and endpoint detection during each addition. Purification involves multi-stage filtration, solvent swaps, and crystallization or precipitation; each step gets stress-tested during process validation. Side-product purge efficiency receives ongoing monitoring between campaigns and is traced via both in-process checks and final release analytics.
Batches are only released following multi-parameter review: Assay, impurity spectrum, residual solvents, color profile, and bulk handling performance. Criteria for each cycle are reset according to upstream deviations and any subsequent purification modifications.
Modification centers around N-substitution, S-alkylation, and condensation with carbonyl or acyl groups. The amino and mercapto moieties offer sites for functionalization, leading to both pharmaceutical intermediates and, in agro settings, active ingredient building blocks.
Chemoselectivity and product integrity draw from reaction solvent and base or acid catalysts, with moderate temperatures the norm to balance conversion and by-product suppression. Inconsistent catalyst or impurity levels in feedstocks substantially affect outcome; each derivative process receives empirical optimization to limit over-alkylation or unwanted rearrangements.
Known derivatives result from direct modification at the pyrazole core or substitution of the aromatic ring. Product versatility is grade-driven and conditional on initial purity.
Long-term preservation is handled via light-blocking, airtight containers. Routine storage occurs at room to cool ambient temperature, out of direct sunlight, and away from reactive gas exposures. Hygroscopicity is typically low but monitored as surface area rises after milling.
Product compatibility with HDPE, glass, or lined steel drums is assessed during stability trials. Absence of reaction or degradation in container tests forms the basis for packaging selection.
Shelf life and observed batch stability depend on impurity threshold, crystallinity, and unintentional cyclization. Signs of degradation can manifest as color darkening or evolution of off-odor. Quality monitoring is maintained through control samples stored under matched conditions.
Hazard statements derive from structural alerts and available toxicological screening. Material is factory-handled as a potential irritant and environmental hazard; labeling reflects current GHS evidence from validated testing or public regulatory sourcing.
Operators follow stringent PPE protocols, with emphasis on avoidance of inhalation and skin exposure. Dust control and local extraction form core mitigation, especially during transfer or bulk packing processes.
Toxicity falls under amine- and mercapto-functional heterocycles, with acute data customarily taken from in vitro, small-mammal, or computed predictions depending on application class. Chronic or environmental fate data feed into grade-specific handling strategies and waste discharge protocols.
Inline monitoring for airborne particulates and regular review of handling practices ensure compliance with factory health standards. User plant exposure guidelines are recalibrated synchronously with new toxicological findings or updated regional regulation.
Annual throughput for 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole is primarily shaped by batch size, campaign frequency, and plant utilization. Output hinges on upstream intermediate reliability and scheduled campaign runs. Our response to new project demand leans on surge capacity and inventories from previous cycles; gaps often arise if precursor supply tightens or campaign slippage occurs. Typical values depend on plant commitment and customer offtake agreements. Interruptions in upstream halogenated aromatics or trifluoromethylation stages directly pinch finished product lots. Release timelines anchor to actual production completion, not to fixed inventory assumptions.
Standard lead time rests on batch campaign planning—generally several weeks if intermediates are on hand, longer if precursor lot qualification is outstanding. Minimum order quantity tracks plant-scale batch limits and downstream isolation process. Small MOQ below equipment charging volume is rarely economical in this chemistry, as isolation and drying set physical lower bounds.
Packaging type is usually determined by regulatory compliance, end-use sector, and logistics method. Bulk solids are packed in double-lined fiber drums or HDPE containers, for lots above 25 kg. Smaller samples or custom lots use sealed HDPE jugs or glass, lined and labeled per request and transit hazard class. Each format has impact on handling and potential for contamination: larger drums reduce touch points and oxygen exposure, but require more stringent closure checks and weight accuracy controls.
All shipments move under Incoterms agreed by contract—EXW, FOB port (mainly in Asia) for consolidated lots, DAP/DDP on request for EU/US end users. Payment terms tie to delivery risk and payment history. New contract partners transact on advance or Letter of Credit. Established partners may access net 30 after qualification. Hazardous goods documentation and regulatory filings add lead time for international air or sea freight.
Raw material costs reflect the price of dichloro-trifluoromethylbenzene, hydrazine derivatives, sulfurization agents, and related solvents. Price volatility is frequent in halogenated aromatics; supply pinch in either chlorinated benzene or gaseous trifluoromethane swings the main cost base. China and India drive pricing for raw dichloro intermediates, while EU/US buyers pay a premium for single-source compliance materials or when REACH registration narrows supply routes. Bulk hydrazine and sulfur don’t swing cost as much as specialty aromatics.
Feedstock disruption, export control policy updates, or plant shutdown at major chlorination routes shift supply balance. Trifluoromethyl import/export restrictions, especially from environmental regulations, further amplify raw material swings. Regulatory transition periods create bulk buying or stock-out cycles among key users, which can spike spot prices even when overall demand appears stable. Downstream API or agrochemical launches also pull forward buying in periodic bursts.
Grade—technical, API-intermediate, or electronic—defines both impurity max allowances and test regime. Highly purified material commands a premium for more exhaustive chromatographic and residue testing. Packaging type influences cost per unit, especially when anti-static, tamper-evident, or inert-atmosphere needs add time and consumables per package. Lot-specific certificates (for regulated sectors) add administrative cost, as each shipment must match customer release spec via reference standards. Data traceability for each lot becomes mandatory in pharma or biotech uses, affecting ultimate invoice.
Supply clusters around Northeast Asia and select EU fine chemical sites. Downstream consumers are major pharmaceutical, pesticide, and specialty intermediate manufacturers, with global buyers aligning purchase cycles with regulatory filing schedules. Demand spikes often align with new generic drug launches or agrochemical off-patent events. Specialty grades for electronics or biomedical research move in much smaller but less price-sensitive volumes.
China offers greatest volume and price flexibility, partly from concentrative upstream routes and scale of local fine chemical production. India sources much of its intermediate from China but controls price via local process integration and regulatory strategies. EU and JP buyers pay for pharma-compliance pedigree; full traceability and REACH/JP-NITE registration restrict import options. US buyers react to EPA import rules and can move between domestic and import supply as batch need and regulatory compliance dictate. Freight and customs regime volatility can override nominal raw material trends.
Pricing over 2024–2026 is shaped by regulatory and raw material pressure. REACH and similar compliance rules will continue to compress source options. Environmental policy may push up cost for high-fluorine intermediates and drive further demand for traceable, low-residue lots. Downward trends rarely sustain except amid global overcapacity, which current industry structure does not support. Environmental levies in China and EU are likely to push cost floors up over the next two years, especially for industrial and high-purity grades.
Market commentary derives from actual sales records (major volume destinations), trade association analysis, and direct feedback from major downstream applications. Where available, aggregated statistics from customs data and leading market intelligence services inform regional supply/demand discussion. Price trends forecast with reference to actual procurement negotiations and multi-year supply contract behavior.
Shutdowns at upstream fluorine-intermediate plants in mainland China several times since 2022 forced temporary spot price escalation. New specialty uses in diagnostics and advanced agrochemical pipelines have extended application demand, but also forced more rigorous impurity profiling. Downstream users have requested tighter batch acceptance criteria, partly in response to regulatory audits.
REACH and NITE inventory rules for import and end-use have moved up batch certification and documentation requirements, increasing both compliance cost and administration lead time. Some QP-based import rules in EU markets have shifted demand to full GMP-lot traceability even for non-pharma applications. Environmental limits on persistent halogenated substances keep tightening, pressing for lower process waste and solvent residue standards.
On manufacturing side, investment has gone into purification steps and solvent recovery. In-process controls now track impurity trends batch to batch, and documentation upgrades have accelerated lot screening for non-routine export destinations. Coordination with key upstream suppliers remains critical for batch continuity, especially for any campaign using restricted or monitored intermediates. Product development responds to customer requests for certified residues and trace-level impurity detection, tailor-made per industry application.
5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole supports several key industrial sectors. In agrochemical production, it forms the backbone of selected fungicide synthesis routes where its amine and thiol functions provide anchoring points for further functionalization. Its use in pharmaceutical intermediates emerges from the demand for high-purity building blocks where trace impurities could impact final API attributes. Specialty chemical manufacturing values reactive pyrazole cores in custom syntheses for performance materials and diagnostics. Variation in downstream use calls for clear grade allocation and control, as permitted impurity profiles, solvates, and trace element tolerances are set by downstream regulatory or application-driven requirements.
| Application Area | Recommended Grade | Primary Control Focus |
|---|---|---|
| Agrochemical Intermediates | Technical Grade | Residual organic solvents, heavy metals, moisture, and byproduct precursors |
| Pharmaceutical Synthesis | High Purity or Low-Impurity Grade | Defined purity, solvent residuals, controlled trace metal content, specification-driven contaminants |
| R&D and Analytical Reference | Analytical/Reagent Grade | Batch-to-batch homogeneity, well-characterized impurity fingerprint, transparency on residual unknowns |
| Custom Performance Materials | Custom-Specified Grade | Properties tailored to end-use: particle size, solvate profile, specific impurity capping |
In production, technical and custom grades often target ease of dissolution, manageable bulk density, and predictable reactivity. Pharmaceutical or R&D grades demand sharp impurity limits, including chlorinated byproducts and organosulfur residues, based on validated analytical methods. Industry regulations or customer specifications will always dictate limits for controlled elements, including metals and halogenated impurities. Storage and handling are impacted by moisture content and bulk properties, which shift according to drying and packing approach—powdered lots for lab work differ from granular technical grades intended for high-volume processing.
Evaluating final use shapes the selection workflow. Batch preparation for crop protection syntheses does not hinge on the same trace impurity limits as routes leading to pharmaceutical APIs. Defining the purpose clarifies the baseline grade requirement and sets the baseline for further specification.
Many applications invoke region- or end-use-specific restrictions, especially in regulated environments. For compounds entering a pharma or agrochemical registration process, review of local and international guidelines defines impurity reporting, trace element limits, and acceptable solvent residues. Regulatory expectations should be communicated up front to align internal control points with customer acceptance plans.
Purity thresholds dictate screening and analytics. Demands for high purity or low detection of specified contaminants, such as persistent halogenated byproducts or heavy metals, influence both the chosen purification strategy and the extent of final release testing. Technical scale grades maintain critical synthetic consistency while higher purity or analytical grades layer on stricter final specifications and batch records.
Process choice correlates with target volume. Agrochemical syntheses often align with large-volume, cost-effective production that balances controlled impurity levels with economical throughput. Research or clinical production commonly justifies investment in added purification steps or extended analytical release, typically at smaller scale and with higher unit cost.
Final grade selection benefits from representative sampling and functional validation. Onsite confirmation—formulation compatibility, synthetic yield, or isolation efficiency—should guide adjustment of material specifications. Manufacturer testing generally profiles typical values depending on batch processing, with final specifications conforming to internal quality standards and customer-accepted ranges.
In producing 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole, manufacturing teams prioritize certification under established quality management systems. Certification audits (such as ISO 9001) account for documented traceability of each batch, oversight of deviation management, and continuous staff training on critical quality points. Auditors typically focus on raw material intake, traceability in the synthesis route, in-process quality control, and finished goods consistency before issuing or renewing certifications. Our finished product accountability starts with procurement of compliant starting materials, verified through detailed supplier quality agreements and regular vendor audits, ensuring predictable input profiles for every production campaign.
Certifications specific to the application or destination market—such as compliance with REACH or other jurisdictional chemical registration—depend on the molecular use case and customer region. The standard registration dossier includes synthesis documentation, typical impurity profiles by production route, and analytical reports supporting each lot. Some customer projects may require certifications under global product stewardship programs for agriculture, pharmaceuticals, or specialty intermediates, which demand a transparent data package for batch traceability and impurity control. These requirements dictate further analytical control throughout operations, such as expanded NMR, HPLC, or GC-MS runs documenting both typical and outlier impurity signatures per lot.
Documentation supporting each batch includes process batch records, certificate of analysis (CoA) for every commercial or development lot, and stability reports if required by customer protocol. All documentation is provided per customer-specified or regulatory requirements—often with expanded chromatographic profiles or synthesis pathway traceability for audit support. Batch-release dossiers may include information on reaction yields, solvent profile outcomes, and updated impurity maps, based on grade and downstream requirements. Document packages can be tailored to support registrations or technical audits at the customer plant or third-party oversight sites.
Production scheduling for this compound follows campaign manufacturing logic, with raw material contract management prioritized for uninterrupted supply. Multi-step synthesis management relies on continuous monitoring of intermediate stocks, predictive maintenance of key reactors, and scenario planning for single-use consumables. Buyers with forecasted demand or recurring call-offs gain from integrated production slot reservations, minimizing lead time risk. During joint development or scale-up, project supply protocols can allow minimum order flexibility or process window expansions to support development-to-commercial transitions without inventory pressure.
Production capacity allocations depend on regular maintenance cycles, workforce training levels, and feedstock contract stability. Dedicated synthesis lines minimize cross-contamination risk, while scheduled downtime controls batch integrity between campaigns. Seasonal supply fluctuations for input materials are mitigated by local sourcing arrangements and optional buffer stocks for contract customers. Clients with volume commitments receive production slot security and preferred access to incremental capacity in plant expansions or campaign escalations.
Sample requests run through a documented chain beginning with inquiry assessment, compliance screening, and available stock review. Process teams match requested sample quantity to available manufacturing residue or next campaign batch, balancing speed with traceable sample certification. Analytical data accompanying samples reflects current batch release practices: impurity maps, identity confirmation, and, where needed, extended analytical panels for customer method development. Where grade-specific or project-specific questions arise, technical support provides context on synthesis changes, purification steps, or scale implications for sample reliability.
Flexible order cooperation modes can include just-in-time delivery, call-off contracts, or rolling forecasts based on customer consumption. Contract terms may define batch reservation windows, minimum order quantity adjustment during ramp-up phases, and consignment stock at customer locations to protect against supply risk events. In custom synthesis or joint development, process modifications and in-line control points shift to meet evolving customer needs, with transparent notification and approval protocols at each significant process change. For long-term partners, cooperation frameworks allow joint quality audits, shared planning of campaign capacity, and coordinated regulatory compliance initiatives for new downstream markets.
Within the sector producing 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole, most research activity centers on precursor quality management, optimization of stepwise condensation and cyclization routes, as well as downstream application tailoring—particularly for advanced agrochemical and intermediate pharmaceutical synthesis. Recent technical focus includes solvent reduction during synthesis, byproduct minimization, and enhanced methods for trace impurity monitoring based on HPLC and LC-MS.
Teams working with this compound frequently explore halogenation control, fluorination efficiency, and the influence of raw feedstock purity on final profile. Each of these variables requires close batch-to-batch data analysis, because deviations can directly impact crystallinity, filtration rates, and granulate flow in subsequent compound integration.
Researchers have responded to increased regulatory tightening in plant protection chemicals, driving demand for highly defined intermediates that support next-generation actives with complex substitution patterns. In specialty pharmaceuticals, demand is shaped by the need for intermediates with high purity profiles and low trace impurity carryover, especially for heterocycle-containing actives under new patent filings. In each sector, manufacturers hear increasing calls for customized physical form and tailored particle size, which influence processability at the customer’s end.
Technical hurdles include managing sulfur source reactivity while containing unwanted side reactions, and achieving fine control in multi-step halogenation under scalable, safe conditions. Breakthroughs have arisen from intensified in-process QC, real-time monitoring for dichloro-trifluoromethylphenyl incorporation, and continuous crystallization advancements. Dynamic impurity profiling at different stages has enabled faster root-cause analysis in event of off-spec batches, supporting higher overall plant yield. Step economy and solvent recyclability improvements show noticeable operational cost reductions as well.
Current data support sustained demand growth in global agrochemical synthesis and active pharmaceutical ingredient manufacture. Most downstream users expect to expand order volumes for well-characterized grades with low residual byproducts. In established export markets, orders have trended toward contracted volumes with detailed impurity mapping and ongoing documentation of batch consistency. New demand also arises in regions promoting stricter regulatory conformance and green chemistry standards.
Process technology is shifting toward automated, closed-loop systems with greater analytical integration—focused on in-line monitoring for content uniformity and early-stage impurity detection. Crystallization and filtration system upgrades continue to matter, as customers require predictable physical form and minimal lot-to-lot quality drift. Flexible production modules allow for tailored runs, supporting more collaborative development contracts on both process and finished product form.
Pressure to reduce waste and decrease solvent volumes has led to a marked adoption of less hazardous process routes, as well as selective catalyst systems which limit environmental discharge. Production units work to improve process mass intensity by recycling process water and reclaiming halogenated solvents whenever feasible. Selection of less persistent auxiliary agents and a documented reduction in high-risk reagents demonstrate ongoing compliance with both internal and external sustainability objectives.
Our technical team offers direct consultation on raw material compatibility, impurity tracing, and process adjustment for specific integration needs. Each customer receives application-oriented feedback on factors such as particle flow, blending stability, and suitability for downstream synthesis, based on actual process feedback and historical performance.
Support services extend to formulation advice, optimal storage conditions based on climatic region, and best practices for dissolution or suspension. Experienced process engineers assist with troubleshooting regarding in-process crystallization, filtration rates, and handling occurrences of color or physical drift, all informed by production data and in-plant observations.
For all grades shipped, we maintain proactive documentation including batch-specific analytical data, impurity trend reports, and tailored product release standards. If a quality or performance deviation arises, technical specialists provide rapid on-site or remote investigation, root cause analysis, and joint solution design. All after-sales support references original in-process QC criteria, supporting full traceability and customer compliance auditing.
| Section | Manufacturer-Observed Features | Grade Dependence | Process/Region/Application Sensitivity | Operational Effects |
|---|---|---|---|---|
| Purity/Impurity Profile | Influenced by feedstock selection, stepwise control | High-purity grades show reduced impurity drift | Application-specific cutoffs for pharma/intermediate vs. industrial agro use | Affects downstream reactivity and regulatory acceptability |
| Physical Form & Particle Size | Observed as fine powder or crystalline, modified by crystallization protocol | Customer-specific grades differ in median size & distribution | Influenced by regional humidity and storage time, plus final user equipment | Determines blending, dissolution, filterability, and bulk handling |
| Transfer & Stability | Batch transfer influenced by aeration, stability affected by trace solvents | Stability window varies for high-purity vs. technical grades | Storage region climates and customer process time windows are key | Affects shelf integrity, risk of clumping, usability in continuous lines |
| Release Specification | Defined at lot level, tracked against internal QC and customer specs | Exact thresholds set per grade and by order history | Adjustments based on industry sector; pharma doubles impurity checks | Compliance enables traceable documentation and repeatable process performance |
Decades of hands-on synthesis experience in heterocyclic compounds form the backbone of our operations. 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole stands as a keystone advanced intermediate in our product portfolio. Each batch leaves our reactors under strict in-house control, from raw material input all the way through isolation, drying, and final milling. The full manufacturing process unfolds within our facilities, involving dedicated lines and rigorously monitored environments. Production teams track every critical parameter to ensure technical compliance and operational consistency.
This compound features prominently in the synthesis of agrochemical actives, specialty pharmaceuticals, and advanced material intermediates. Agrochemical formulators value it for its structural contribution to activity against resistant pests and environmental persistence profiles. Pharmaceutical development teams use it as a scaffold for target-specific pyrazole derivatives. Polymer and dye manufacturers rely on the core structure to drive reactivity and binding properties in high-performance end materials. We have supplied this intermediate to leading formulators who demand statistically controlled batch reproducibility, traceable quality documentation, and supply planning matched to their operational cycles.
Full control over the synthesis process provides a clear advantage. Every lot undergoes off-line analysis by HPLC, NMR, and impurity profiling before release. Consistency in chemical purity, moisture control, and particle specification stays under direct supervision by on-site QC teams. Documented batch histories and retained samples allow for thorough lot review and regulatory traceability. Zero tolerance for out-of-spec material underpins our release decisions, which means procurement teams receive shipments that match previously qualified benchmarks.
Handling and packaging reflect end-user realities. Products ship in high-barrier, chemical-resistant lined drums or composite containers, minimizing exposure to air and moisture. Each package receives a unique identifier tied to our production tracking system and loading crews confirm mechanical integrity before each dispatch. Our logistics teams coordinate directly with plant managers and warehouse operators, supporting pallet configuration and documentation that align with on-site handling procedures. Custom labeling and regulatory paperwork stay integrated within our export and domestic supply workflows, reducing delay at ports or storage facilities.
Process scalability, pilot runs, and downstream compatibility often raise questions during new application development and plant trials. Our engineering and technical staff collaborate directly with R&D and production managers to address analytical, scale-up, and environmental questions. Support includes process impurity guidance, safe handling protocols, and joint problem-solving during process integration. Knowledge sharing grows from continuous production experience, not sales literature or third-party advice.
For procurement and supply chain managers, negotiated supply programs and buffer stock at origin ensure continuity during demand spikes and transport interruptions. Cost predictability grows from a vertically integrated process, not market speculation or reselling. Distributors and logistical partners gain confidence in regulatory documentation rooted in original manufacturing evidence, not paperwork chains. Industrial users receive shipment lots with provenance, handling advice matched to the chemical’s properties, and the backing of a production team versed in site-level deployment challenges.
| Attribute | Our Approach |
|---|---|
| Manufacturing Control | Internal synthesis, purification, and packaging |
| Quality Assurance | Batch testing, full traceability, retained samples |
| Packaging | Chemically resistant drums, environment protection |
| Technical Support | Direct engineering and scale-up consultation |
| Documentation | Original regulatory, transport, and safety paperwork |
| Supply Security | Buffer stock, program supply, shipment tracking |
Long-term partnerships grow from real production commitment. That defines our role as a direct manufacturer of 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole for industry stakeholders.
Direct Experience with Solubility
We have watched organic chemists and process engineers ask the same question for years: what challenges come up when working with 5-Amino-3-mercapto-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole in solution? This compound, which features a pyrazole ring linked to a heavily chlorinated and trifluoromethylated phenyl group, resists straightforward dissolution. Pure water has very limited effect. Solubility in water can be described as negligible. If full dissolution is essential, polar aprotic solvents often perform better—N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), or acetonitrile are most often chosen in industrial settings. Methanol and ethanol work for smaller-scale operations and preliminary testing, though they rarely match the efficiency of the former solvents.
Our team has repeatedly confirmed that extended stirring and gentle warming (under controlled conditions) improve kinetic behavior, but overheating degrades the active sulfhydryl group. Routine filtration steps are used to remove undissolved particles. Anyone preparing high-concentration stock solutions should plan for filtration and possibly ultrasonication. Technical-grade product will show modest variance in dispersibility based on batch—fully dissolving requires close control of pH and temperature to prevent hydrolysis and side reactions.
Observations on Chemical Stability
Through years of synthetic optimization, we verify that this compound remains stable under dry, cool, inert conditions. The thiol group on the pyrazole ring is sensitive to prolonged light exposure and oxidizing environments; both factors trigger discoloration and by-product formation. We have identified particular risk for those storing pre-dissolved material. Our technical team always advises preparation of fresh solutions shortly before use. Bulk powder, sealed in original packaging, outlasts solutions by an order of magnitude in terms of shelf life.
Hydroscopicity remains quite low, yet trace moisture induces slow degradation. Our own stability studies show that refrigeration alone cannot guarantee optimal shelf life unless storage vessels restrict humidity ingress. Ground glass stoppered bottles or sealed laminated foil bags grant the best long-term results, especially in climates prone to seasonal humidity swings.
Best Practices for Industrial Storage
Our internal protocol relies on temperature-controlled storage below 25°C in well-ventilated dry rooms. We avoid storing near acids, bases, or oxidizers. All product comes protected from light using opaque or amber packaging materials. The hazard potential falls within manageable limits, assuming operators maintain basic containment and spill prevention strategies. We provide detailed safety and storage advice as part of our technical documentation, developed through dozens of scale-up projects in our own synthetic facilities.
Direct supply lets us control packaging—our standard containers include high-integrity bottles or fiber drums with inner liners. We advise against repackaging unless strictly necessary, since repackaging under uncontrolled atmosphere produces greater risk of contamination or accidental hydrolysis.
Technical Support from Our Factory
As the primary manufacturer, we maintain thorough records of product performance over multiple years and climates. Our technical staff answer complex formulation questions and suggest solvent systems based on first-hand troubleshooting. If a partner needs to optimize loading for synthesis or formulation, we work directly from pilot-plant data and verified scaling experience. For every supply lot, batch traceability ensures end-users draw from consistent quality and chemical behavior. By remaining involved in every stage—from synthesis to delivery—we reduce uncertainty and create chemistry that customers can trust in operation and storage.
Questions about minimum order quantity and bulk purchasing pop up almost every week. Our team hears from businesses running pilot projects and from major processors pushing through truckloads at a time. These questions matter because not every customer—big or small—wants to navigate unclear buying terms or guess at supply limitations. As the manufacturer, these decisions shape our daily workflow, our cost structure, and our long-term partnerships.
Setting a minimum order doesn’t come from a desire to exclude any group—it comes from the way our equipment runs and the resources involved in each production batch. Each cycle uses raw materials, energy, labor, and needs thorough cleaning to maintain quality. There’s a fixed cost every time our lines shift to a new compound, grade, or specification. A batch that’s too small slows down the whole process and can introduce extra waste. If we commit to very low minimum orders, we spend more time resetting lines than actually producing material, which drives up costs for everyone in the chain.
Our current minimum quantities reflect careful calculations over years of operating experience. We aim to keep them accessible so emerging brands and R&D teams can order directly. For most products, standard packaging starts at fiber drums, IBCs, or palletized bags—based on the nature of the chemical and regulatory requirements. Regular shipments and scheduled contracts help us keep base pricing stable, even for seasonal or cyclical demand.
Bulk purchasing, whether in full tanker loads or multi-ton lots, reshapes the whole logistics chain. Large orders allow us to run longer, more efficient production campaigns. This drives down per-ton energy and labor costs, cuts packaging waste, and locks in shipping rates. We pass those savings along by offering better pricing for high-volume contracts. When we see repeat orders for bulk shipments, it also signals us to keep raw material inventories healthy and prepare support for your production ramp-up. Our technical and supply planning teams can provide detailed information on lead times or run special batches with adjusted specs if the volumes justify a custom production window.
Handling bulk logistics brings its own set of demands. Our team works directly with hauliers we trust for both liquid and solid chemicals. Road, rail, and container shipments all require their own documentation and safety checks. We keep lines of communication open not just during the initial order, but right through to delivery—especially on sensitive or high-value shipments. With every bulk contract, our field technical group stays available for application troubleshooting, handling advice, and continuous improvement feedback. That relationship builds trust; we see the whole picture, not just a single transaction.
No factory can thrive by taking any job at any size—it’s experience in real-world production that sets responsible boundaries. Our approach to minimum orders and bulk contracts has grown out of years on the shop floor. We don’t treat these thresholds as arbitrary. If you are planning scale-up or want to test our product in a unique application, our commercial and technical staff will talk straight about what’s possible, what’s sustainable, and what alternatives may fit. Years of direct manufacturing teach us that transparency builds stronger supply chains and better long-term business. That’s why we keep these terms clear and work directly with our customers on every order, large or small.
Shipping chemicals across borders never falls into a simple category. From our own experience producing and packaging compounds bound for multiple continents, nothing can be left to chance—regardless of how familiar we may be with the product itself. Whether the compound in question ships regularly by air, sea, or road, certain shipments run into regulatory hurdles that must be handled long before the truck leaves our dock.
Our production and compliance teams start by running the compound’s CAS number against current international lists—GHS, IATA, IMDG, and any relevant regional requirements. This isn’t about bureaucracy; these are practical steps that protect our customers and our logistics partners from fines, delays, and—most importantly—safety hazards. We face routine requests for compounds classified under different UN numbers, and such classifications often dictate the path of the whole order. A chemical might ship in standard packaging for domestic clients, but those same drums could require special UN-approved containers, secondary containment, or watertight labeling when headed abroad.
Documentation forms a good share of our daily work. As the actual manufacturer, we do not leave the preparation of Safety Data Sheets, Certificates of Analysis, or Dangerous Goods Declarations to external parties. Our in-house regulatory staff stays current with each destination country’s import control lists. Some jurisdictions, for example, expect full transport documentation in both English and the local language, along with hazard pictograms and emergency contact details right on the drum labels. Failing at any of these stages doesn’t just slow things down—it forces shipments back, which hits both production and customer deadlines.
There’s no escaping regional variations in rules. The European Union often requests REACH compliance documentation or registration details, and our technical team produces these on request. For Asia-Pacific destinations, the requirements may center around CNY-based MSDS versions or specific customs clearances. The U.S. will expect strict adherence to DOT hazard classifications and TSCA notifications, so our logistics coordinators tie those into every shipment booked from our facility.
We avoid shortcuts: intermediaries taking chances with repackaging or missing labels can quickly compromise the chain of custody. We stamp our batch numbers and origin details onto each unit, which allows tracing from production back to raw material intake. This is key for clients with regulated end uses—especially pharmaceutical or electronics applications—where a single missing document can stall entire downstream batches. Export controls kick in whenever we handle dual-use chemicals, which demand additional end-use declarations and, sometimes, export licenses. Our compliance process factors this in from the moment the purchase order is received.
We support our international partners by issuing technical and compliance documents in-house and training our shipping team on the shipping nuances each route demands. If an order requires temperature-resistant packaging or shock mitigation, our warehouse team builds that into the crating process before the goods ever leave our property. Our preparations cut down on rejections at borders and help our customers meet their own customers' expectations.
No matter the destination, we keep shipping instructions and documentation as specific as the compound demands. Our reputation—and our customers’—depends on each shipment arriving legally compliant, properly labeled, and safely contained, job after job.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales3@ascent-chem.com, +8615365186327 or WhatsApp: +8615365186327
