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3-(2-Thienyl)Pyrazole

    • Product Name 3-(2-Thienyl)Pyrazole
    • Alias thp
    • Einecs 618-698-4
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    288462

    Product Name 3-(2-Thienyl)Pyrazole
    Molecular Formula C7H6N2S
    Molecular Weight 150.20 g/mol
    Cas Number 15898-93-4
    Appearance Off-white to light yellow solid
    Melting Point 105-107 °C
    Solubility Slightly soluble in water, soluble in organic solvents
    Purity Typically ≥98%
    Smiles c1ccc(n1)c2cccs2
    Storage Conditions Store in a cool, dry place, tightly closed
    Synonyms 2-Thienylpyrazole
    Hazard Statements May cause skin and eye irritation

    As an accredited 3-(2-Thienyl)Pyrazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 10-gram amber glass bottle labeled "3-(2-Thienyl)Pyrazole," with safety information, tightly sealed, and tamper-evident cap.
    Shipping 3-(2-Thienyl)Pyrazole is shipped in tightly sealed, chemical-resistant containers to prevent contamination and moisture exposure. It is handled in accordance with chemical safety regulations, typically under ambient or refrigerated conditions, and labeled with hazard information. Transport complies with applicable international and local shipping guidelines for laboratory chemicals.
    Storage Store 3-(2-Thienyl)pyrazole in a tightly sealed container, away from light, heat, and moisture, in a cool, dry, and well-ventilated area. Ensure it is kept separate from incompatible substances such as strong oxidizing agents. Clearly label the container and handle it using appropriate personal protective equipment (PPE). Follow local regulations for chemical storage and disposal.
    Application of 3-(2-Thienyl)Pyrazole

    Applications of 3-(2-Thienyl)Pyrazole in Industrial Manufacturing

    3-(2-Thienyl)Pyrazole serves as a critical intermediate across high-value sectors due to its unique heterocyclic structure, offering essential reactivity for advanced material synthesis. As a direct manufacturer, we ensure consistent purity and quality to support demanding downstream production protocols in specialty chemicals and high-performance materials.

    1. Agrochemical Active Ingredient Synthesis

    Large-scale agrochemical companies integrate 3-(2-Thienyl)Pyrazole as a core intermediate for the synthesis of modern pyrazole-based pesticide active ingredients. Its electron-rich backbone enables selective coupling and cyclization, essential for producing crop protection molecules with enhanced bioactivity profiles. Our raw material enters after initial condensation steps and undergoes controlled functionalization in multi-step syntheses, consistently supporting high-throughput active production lines for herbicides and fungicides.

    Industry compliance standards

    • FAO/WHO Specification for Pesticide Technical Grades
    • REACH Registration (EC No. 1907/2006)
    • ISO 9001:2015 Quality Management
    • National agrochemical registration regulations (EPA USA, ICAMA China)

    Typical usage ratio

    • 5 - 15% by mass in advanced pyrazole ring-forming steps, adjusted based on target compound and synthesis route

    Downstream process integration

    • Enters post-cyclization unit operations for core scaffold assembly
    • Used in heterocycle functionalization and subsequent formulation blending stages

    Final product types

    • Selective herbicide technical concentrates
    • Systemic fungicide actives
    • Seed treatment active compounds
    • Pesticide premix technicals

    2. Pharmaceutical Intermediate for Anticonvulsant Synthesis

    Pharmaceutical manufacturers employ 3-(2-Thienyl)Pyrazole in key intermediate stages when synthesizing anticonvulsant drug candidates. The compound supports targeted heterocyclic core construction for pyrazole-based APIs under GMP-controlled batch processes, particularly where sulfur-containing rings enhance neurological effect profiles. Strict purity and traceability form vital control points throughout the multi-stage API manufacturing workflow.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • USP/NF and Ph. Eur. monograph compliance where applicable
    • FDA DMF (Drug Master File) requirements
    • Pharmaceutical cGMP (21 CFR Part 210/211)

    Typical usage ratio

    • Intermediate input at 3 - 8 molar equivalents, dependent on proprietary route and scale

    Downstream process integration

    • Serves as a substrate in selective N-arylation and ring-closure reactions
    • Introduced after initial condensation, prior to pharmacophore finalization

    Final product types

    • API intermediates for anticonvulsant therapies
    • Advanced intermediates in CNS drug synthesis
    • Reference standards for regulatory filings
    • Bulk generic investigative compounds

    3. Organic Electronic Material Precursor

    Manufacturers of advanced electronic and photonic materials utilize 3-(2-Thienyl)Pyrazole when engineering novel organic semiconductors, OLED emitters, and photovoltaic components. Its donor-acceptor motifs facilitate improved charge transfer, enabling fine-tuning of electronic bandgaps in device-grade materials. Downstream, precise stoichiometry guides co-polymer or small molecule formation to meet device integration and performance consistency.

    Industry compliance standards

    • RoHS Directive (2011/65/EU)
    • REACH Compliance (EC No. 1907/2006)
    • UL 94 Material Flammability Standard (for polymers)
    • ISO/IEC 17025 testing for electronic materials

    Typical usage ratio

    • 2 - 10% incorporation in copolymerization or molecular blending, tailored per device requirements

    Downstream process integration

    • Added during monomer charge or bridging agent stages in material synthesis
    • Introduced into formulation tanks prior to polymerization or vacuum deposition

    Final product types

    • Organic thin-film transistors (OTFT)
    • OLED display and lighting emitters
    • Photovoltaic active layers
    • Electrochromic device materials

    4. Specialty Dye and Pigment Manufacturing

    Specialty colorant producers rely on 3-(2-Thienyl)Pyrazole for synthesizing advanced dyes and pigments, particularly those required for high durability and lightfastness. Its integration into the chromophore backbone enhances spectral properties, with direct impact on absorption characteristics for demanding textile, plastics, and inkjet ink applications. Continuous process monitoring ensures hue consistency and batch reproducibility for downstream coloring facilities.

    Industry compliance standards

    • EN 71-3 for colorant safety in toys
    • REACH Substances of Very High Concern (SVHC) regulations
    • ISO 14001 Environmental Management
    • GMP for colorants (if used in food or pharma contexts)

    Typical usage ratio

    • 1 - 12% depending on pigment type, shading intensity, and desired absorption profile

    Downstream process integration

    • Loaded into the dye/kettle at the precursor mix stage
    • Blended prior to azo coupling or thienyl-condensation reactions

    Final product types

    • Textile disperse dyes
    • High-performance printing pigments
    • Lightfast plastic masterbatches
    • Inkjet ink colorant concentrates
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    Certification & Compliance
    More Introduction

    3-(2-Thienyl)Pyrazole: A Value-Driven Approach to Heterocyclic Chemistry

    Advancing Synthetic Possibilities

    Years blending, reacting, purifying, and troubleshooting have taught us one thing: the backbone of an innovative chemical is its dependability at each stage of the process. On our production lines, 3-(2-Thienyl)Pyrazole provides predictability batch after batch, which is why so much of our own R&D depends on it. Chemists who work with us bring up the same point—finding an aromatic heterocycle that holds up under both academic and commercial synthesis can be a challenge. The thienyl-pyrazole structure answers with stability and versatility, whether you're scaling up or manipulating reaction conditions for discovery work.

    Built to Serve Demanding Chemical Synthesis

    We build 3-(2-Thienyl)Pyrazole in our plant using refined thienyl precursors. Yields stay high because we focus on solvent quality, temperature control, and the purity of azole ring construction, cutting down on byproducts that can throw off a high-precision synthesis. We have attention to the way each batch crystallizes. We don't leave this to automation alone; our team samples and analyzes along the way, making sure impurities get pulled out and don’t sneak through downstream. The crystalline product keeps a consistent melting point, and we keep the color and odor within the tight range demanded by researchers and applied chemists.

    Where off-the-shelf pyrazoles can shift in performance, we’ve locked in our synthesis so you see little change from one lot to the next. Labs use our material directly for further transformations, often without extra purification, and report strong reproducibility. The fine control we use over particle size makes our 3-(2-Thienyl)Pyrazole easy to weigh, dissolve, and handle with standard instruments and weighing boats. These practicalities matter in large plants and bench-top labs all the same.

    Applications: Research, Pharma, and Beyond

    Customers in pharmaceutical research ask for 3-(2-Thienyl)Pyrazole when they design heterocycle libraries. Our material not only fits drug discovery but also supports new ligand designs, high-throughput screening, and the creation of reference standards. Pyrazole’s dual nitrogen atoms draw attention for their hydrogen bonding and electronic effects in medicinal chemistry. Adding the thienyl group broadens access to sulfur-containing targets that can tweak selectivity, bioavailability, and other critical properties.

    The non-pharmaceutical industries push its limits in agricultural chemistry and materials science. Process chemists appreciate 3-(2-Thienyl)Pyrazole for its role in fungicide intermediates, dyes, and coordination complexes. The unique heteroaromatic system produces responsive structures that stand up to UV and show thermal stability in finished products. Feedback from our partners shows that the sulfur in the thienyl ring helps tune binding affinity and stability across structural classes.

    Comparing with Other Pyrazoles

    Some customers new to this compound ask how its performance stacks up beside more common pyrazole derivatives. The core distinction sits in the thienyl group. Basic pyrazoles carry only phenyl, methyl, or simple alkyl groups, missing the added reactivity that sulfur brings to a molecule. This change provides more options for downstream modification. Synthetically, the electron-rich sulfur heterocycle means the compound can sometimes take part in reactions that phenyl-pyrazoles struggle with, especially when pursuing oxidative or coupling reactions.

    Additionally, the physical consistency we deliver with our 3-(2-Thienyl)Pyrazole means less time spent troubleshooting unexpected “batches gone bad.” This contrasts with off-brand or minimally-refined materials where color changes, yield loss, or side-reactions can occur simply due to uncontrolled impurities. We’ve spent years developing the controls needed to ensure each lot feels the same in your hands, minimizing batch-to-batch drift and letting you standardize SOPs.

    Real-World Experience from the Plant

    We’ve watched this compound become a go-to, not only because of what it brings to the bench, but because we maintain the core values of transparency and traceability. At each step in the preparation, someone from our team writes in the batch log, noting anomalies, keeping watch over reaction temperatures, and confirming product purity with in-house NMR and GC-MS. Our long-time staff, with backgrounds reaching from synthetic organic to analytical chemistry, keep a close eye on the finished product.

    It’s tempting in fine chemical manufacturing to let automation and machinery do it all, but experience shows that hands-on oversight catches the rare, tricky issues that can throw off a whole batch. We treat each order as a new commitment, tracking which team members handled the starting material, how long purification took, and what adjustments were made to counter small shifts in humidity, temperature, or raw material source. This approach built our reputation among long-standing partners who prefer straight answers and full disclosure over bulk discounts or hidden processing aids.

    Specifications and Quality as Understood by Chemists

    Customers often ask about analytical details. While standard specs matter—molecular weight, melting point, spectral data—those numbers alone don’t promise usable chemical. Instead, our team tests for consistency in crystal form, bulk density, solution clarity, and freedom from contamination. We use HPLC, TLC, 1H-NMR and 13C-NMR comparison with authentic standards to guarantee structure. Any deviation, even below regulatory levels, triggers a review. Routine GC-MS checks reveal no detectable solvent residues or reaction byproducts, providing peace of mind where regulatory environments expect full traceability.

    Moisture affects purity, so we ship only after Karl Fischer titration shows low water content, particularly for clients in moisture-sensitive synthesis. We’ve seen how even trace residual water can degrade the next step, especially when making organometallic derivatives. Each drum, bottle, and ampoule is labeled for trace-back to the exact lot, making complaint resolution straightforward, should it ever be needed.

    Handling and Workflow Simplicity

    From experience, we know that ease of handling matters just as much as chemical identity. Whether a gram or a hundred kilograms are ordered, we package 3-(2-Thienyl)Pyrazole to minimize clumping, electrostatic issues, and atmospheric contamination. Working closely with logistics partners, we avoid unnecessary storage time and temperature swings. It’s straightforward for chemists to transfer, weigh, and dissolve our product, without running into losses from adherence to glassware or anomalous powder flow.

    Tracing Downstream Performance

    Success in research or manufacturing stems from a reliable supply chain. Customers return to our 3-(2-Thienyl)Pyrazole after poor experiences elsewhere: off-odors, inconsistent color, or poor solubility can disrupt R&D timelines or result in expensive downtime. We've responded by keeping internal benchmarks on not just identity and purity but also subjective criteria that chemists report. Our continuous feedback loop with end-users informs development, leading to improvements that actually show in finished product behavior.

    Responding to Pharmaceutical Requirements

    In medicinal chemistry, the reproducibility of lead compounds and intermediates relies on raw material trustworthiness. Subtle shifts—whether in melting range or impurity level—can cascade into failed screens or wasted time. Teams designing kinase inhibitors, anti-inflammatory agents, or enzyme modulators have cited our product as a cornerstone, referencing fewer repeat columns and less work verifying base-line quality. Developers working under current good manufacturing practices expect this material to integrate seamlessly and to support full documentation and disclosure. We willingly provide supporting safety, stability, and analytical data packages when requested—years of supplying regulated industries have taught us the kind of transparency and openness that build long-term trust.

    Meeting Non-Pharmaceutical Demands

    Some of our best insights on 3-(2-Thienyl)Pyrazole have come from outside pharma. Commercial partners in pigments, electronic materials, and advanced polymers ask about shelf life, compatibility, and thermal resilience. Our thienyl-pyrazole, owing to its ring structure and tightly controlled impurity profile, shows strong stability over extended storage—no loss in performance after years in proper packaging. Material scientists find it easy to disperse in polymer blends, citing reliable color-fastness and minimal migration.

    The versatility of the thienyl group, combined with the predictable electronic signature of the pyrazole, brings a unique handle for further derivatization or direct function in end-products. This has opened new directions for our partners, pushing material development and facilitating functional additive innovation.

    Learning from Decades in the Field

    Seasoned chemists in our facilities have seen the challenges that come with unstable supply—jumps in impurity levels, shifts in handling properties, or unexpected regulatory issues. We put effort into backward integration, sourcing main precursors from trusted long-term partners and vetting every raw material for change in composition. This step reduces surprises that can emerge downstream. The principle is simple: reliability up front leads to fewer headaches for the customers who rely on us.

    Product liability, environmental standards, and global shipment complexities add more variables. After years responding to custom synthesis projects, serving international supply chains, and guiding customers through regulatory hurdles, we respond with openness. Our technical team talks openly with researchers before they even place an order. This helps map out not just what’s possible but what sometimes causes trouble. Honest communication sets us apart in a space crowded with claims but thin on accountability.

    Considering Waste and Sustainability

    In recent years, environmental expectations have tightened. We adjusted process chemistry to reduce waste by recycling solvents, reusing intermediates as much as technically feasible, and controlling emissions. In our plant, solvent recovery units run around the clock, cutting back on disposal volumes. We optimize crystallization and washing sequences, using green solvents when these perform as needed. Any waste generated passes through rigorous treatment before disposal, with records stored for inspection. These measures matter to customers who prepare regulatory dossiers or compete in green chemistry programs, and they give additional peace of mind for those downstream who care about the environmental impact of their supply chain.

    Moving Forward: Supporting Our Partners

    Open feedback channels keep us aligned with the real needs of researchers and manufacturing chemists. When clients need to scale from grams to multi-kilogram quantities, our team provides input on potential process changes and timeline adjustments. Fluctuating demand across the market for heterocyclic building blocks means we maintain buffer stock and respond flexibly to urgent requests, minimizing downtime for customers who depend on timely delivery.

    We notice where challenges show up—long-term storage, reactivity with certain solvents, or, in rare cases, the need to tweak the particle size distribution for specialized applications. Our in-house laboratory and pilot plant allow rapid development or adjustment to meet specific requirements, always tied directly to user feedback rather than theoretical projections. We look for the gaps the market misses, step up with technical guidance, and walk through challenges with the same pragmatic mindset that brings results in the real world.

    Conclusion: Chemists Serving Chemists

    At the root of it all, 3-(2-Thienyl)Pyrazole succeeds because we commit to transparency and direct partnership. This isn’t a commodity to us—it represents years of plant-floor experience, technical improvement, and straight talk with end-users pushing boundaries in chemistry. We listen when our customers talk about success, and more importantly, about failure. Every improvement made in-house is driven by what’s been learned in practice, not just marketing spin. Whether you’re pushing the edge of pharmaceutical discovery, exploring materials innovation, or just need the reliability that keeps things running smoothly, our 3-(2-Thienyl)Pyrazole comes built on experience—yours and ours together.