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3-Aminothiophene-2-Carboxamide

    • Product Name 3-Aminothiophene-2-Carboxamide
    • Alias 3-Amino-2-thiophenecarboxamide
    • Einecs 629-796-9
    • 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

    747941

    Casnumber 88141-72-0
    Molecularformula C5H6N2OS
    Molecularweight 142.18
    Appearance White to off-white solid
    Meltingpoint 156-160°C
    Solubility Slightly soluble in water
    Purity Typically >98%
    Storagetemperature Store at 2-8°C
    Inchikey ZZISAYYHJYRAFK-UHFFFAOYSA-N
    Smiles C1=CSC(=C1N)C(=O)N

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

    Packing & Storage
    Packing White or amber glass bottle, tightly sealed, labeled "3-Aminothiophene-2-Carboxamide, 25g" with safety and handling instructions clearly printed.
    Shipping 3-Aminothiophene-2-Carboxamide is shipped in tightly sealed containers under ambient or cool, dry conditions to maintain stability. It is packaged in compliance with safety regulations for hazardous chemicals, including appropriate labeling. During transit, it is protected from moisture, heat, and direct sunlight to prevent degradation or hazardous reactions.
    Storage 3-Aminothiophene-2-carboxamide should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area. Keep the chemical away from incompatible substances, moisture, and direct sunlight. Store at room temperature, avoiding extreme temperatures. Properly label the container, and handle it using appropriate personal protective equipment to prevent exposure and contamination.
    Application of 3-Aminothiophene-2-Carboxamide

    Applications of 3-Aminothiophene-2-Carboxamide in Industrial Manufacturing

    3-Aminothiophene-2-Carboxamide serves as a key intermediate for several high-value chemical industries. Our direct manufacturing experience supports large-scale supply to advanced pharmaceuticals, specialty agrochemical synthesis, functional dye development, and fine chemical R&D. Application approaches in each downstream sector exhibit unique requirements in specification, compliance, process adjustments, and end product profile.

    1. Pharmaceutical API Intermediate for Anti-inflammatory Agents

    Pharmaceutical producers use this compound as a critical starting material in the synthesis of advanced heterocyclic drug candidates, particularly thienopyridine-based anti-inflammatory APIs. Reactive site control, impurity limits, and batch traceability remain vital during process development. The compound participates in early-stage amide coupling, then undergoes selective cyclization. Downstream, its use requires strict GMP compliance and documentation for each synthetic batch delivered to drug substance plants. Manufacturers customize usage loadings to control batch yields and impurity formation according to downstream route and target structure.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP, Ph. Eur. monograph compliance where relevant
    • EDQM Certificate of Suitability (CEP) process participation
    • REACH registration for safe European supply chain management

    Typical usage ratio

    • 20–35% of molecular input in target synthetic sequence, adjusted by process type and API structure

    Downstream process integration

    • Functions as a core building block in amide coupling and ring closure during heterocycle formation stages

    Final product types

    • Thienopyridine derivative APIs for inflammation and pain management (e.g., antirheumatic and antipyretic compounds)

    2. Agrochemical Synthesis Intermediate

    This material contributes to the targeted production of thiophene-based herbicide and fungicide actives. Agrochemical companies integrate the compound at the backbone construction stage of research and commercial plant protection chemical routes. Accurate control of formulation and impurity content supports regulatory submissions and environmental safety evaluations. Process engineers adjust input ratios as per desired molecule and crop selectivity during formulation. Final products undergo multistage purification and packaging before distribution to farm and plantation sectors.

    Industry compliance standards

    • FAO/WHO Guidelines for the Quality Control of Pesticides
    • OECD Principles of Good Laboratory Practice (GLP) for registration data
    • EPA (US), REACH (EU) chemical registration for agrochemicals

    Typical usage ratio

    • 10–25% in total precursor input, modified based on final active ingredient synthesis steps and yield optimization

    Downstream process integration

    • Introduced in primary condensation and cyclization of thiophene ring-containing crop protection molecules

    Final product types

    • Selective herbicides for rice and wheat fields
    • Systemic fungicides for fruit and vegetable crops

    3. Organic Electronic and Conductive Polymer Development

    Manufacturers utilize this compound as a monomer precursor for synthesizing functionalized polythiophene derivatives found in electronic devices. Materials engineers seek to optimize charge mobility and film-forming properties, fine-tuning input ratios according to target performance in printed electronics, OLEDs, and organic solar cells. Purification and particle size distribution control during initial input are essential to ensure film uniformity and conductivity post-polymerization. Downstream users maintain full process documentation to comply with technical quality verification and environmental assurance protocols.

    Industry compliance standards

    • RoHS Directive (2011/65/EU) restricting hazardous substances in electrical equipment
    • ISO 9001 for quality management in electronics manufacturing
    • IEC 61249 and IPC-4101 guidelines for base materials in PCB fabrication

    Typical usage ratio

    • 15–40% of monomer input per batch, adjusted through molecular weight targeting and polymerization type

    Downstream process integration

    • Used as a functional monomer in oxidative or cross-coupling polymerization for conductive polymer synthesis

    Final product types

    • Organic semiconductor films
    • Flexible printed circuit substrates
    • OLED layers and organic photovoltaic materials

    4. Specialty Dye and Pigment Intermediate

    Producers of specialty dyes introduce this compound as a tailored functional group supplier for high-performance thiophene-based chromophores. Its integration facilitates shade adjustment and fastness improvement during colorant synthesis. Compliance with end-use regulatory frameworks, such as those governing textile or food-contact dyes, requires tightly controlled synthesis conditions and impurity monitoring. Processing specialists manipulate input ratios in response to desired color intensity, dispersion, and solubility criteria per application segment. Post-synthesis, end users apply fractionation and finishing steps immediately after core scaffold construction.

    Industry compliance standards

    • OEKO-TEX Standard 100 Annex VI for textile applications
    • EU Regulation No 1223/2009 for colorants in cosmetics
    • FDA 21 CFR for indirect food additive colorants (where applicable)

    Typical usage ratio

    • 5–18% of total colorant substrate input, tuned in relation to target fastness and final pigment loading

    Downstream process integration

    • Added in the primary scaffold construction stage of chromophoric group development in dye manufacturing

    Final product types

    • Reactive textile dyes
    • High stability specialty pigments for plastics and coatings
    • Food packaging inks (where regulatory clearance applies)
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    Certification & Compliance
    More Introduction

    3-Aminothiophene-2-Carboxamide: Insight from the Manufacturer’s Bench

    Introducing a Key Intermediate With Versatile Value

    Working every day with 3-Aminothiophene-2-Carboxamide, our team sees far beyond the catalog sheet and into the chemistry that drives real-world change. This compound, made here in our own reactors, holds a central place in diversified R&D and industrial projects. Laboratories often request pure heterocyclic building blocks, seeking substances that can unlock new biological pathways or support the next big synthesis. To meet those needs, our chemists rely on strict batch controls and painstaking purification. Not all carboxamides are the same, and subtle differences in how thiophene atoms bond influence both the lab bench and the scale-up reactor.

    Model and Specifications Rooted in Real Operations

    We synthesize 3-Aminothiophene-2-Carboxamide with a focus on practical details. The model: C5H6N2OS, molecular weight 142.18 g/mol. Down in the production bay, color and purity matter more than a catalog photo: our solid batches range from off-white to light tan depending on conditions at crystallization. We regularly achieve purity over 98% by HPLC, but seasoned chemists will note that even trace impurities can complicate downstream chemistry like Suzuki couplings, amide bond formation, or selective reductions. Moisture content can edge up during humid seasons, so our staff monitors every drum for water pickup, especially at higher scales when transfer lines stretch across the warehouse.

    Our preferred package sizes reflect actual demand: gram samples ship out for research screening, but larger syntheses in custom kilo lots keep the facility busy. Every production run comes with a certificate that summarizes the batch-specific results. We know that generic specs rarely catch the nuances—you get a chemical and a history of how it was made.

    Usage Patterns Seen in Day-to-Day Production

    Applications for 3-Aminothiophene-2-Carboxamide often start in pharmaceutical lead discovery. Clients with medicinal chemistry groups reach out for this compound as a core intermediate in designing kinase inhibitors, antimicrobial agents, and antitumor candidates. The aminothiophene core acts as a privileged scaffold; the carboxamide moiety enables flexible downstream modifications, from acylation to cyclization. In agricultural R&D, product designers build on the thiophene ring to create proprietary fungicides and herbicides. A robust intermediate like this forms the foundation for further chemistry—no one wants an impure or unstable input derailing multi-step syntheses.

    A specialty materials segment has emerged lately. Polymer scientists now request higher purities for applications in organic electronics, seeking to leverage the electron-rich nature of aminothiophene for novel semiconductors and OLED frameworks. Some of these customers bring stringent requirements, asking for tightly controlled particle size and solvent-free handling. We regularly collaborate through project-specific quality agreements—feedback from the field has improved key points in our isolation and drying steps.

    What Sets 3-Aminothiophene-2-Carboxamide Apart

    Manufacturers like us pay attention to details that go unnoticed in typical sales blurbs. Unlike broader-spectrum aminothiophenes, the 2-carboxamide substitution specifically supports regioselective derivatization. The result: synthetic chemists build new analogs more efficiently, avoiding laborious protecting-group strategies. Other isomers force difficult separations or bring side reactions; our product lets research teams streamline their approach. We don’t shape our batches around generic quality grades—we listen directly to what formulation chemists, scale-up engineers, and material scientists request, then adjust protocols on the floor.

    On the supply chain side, we have seen knockoffs and poorly characterized imports cause headaches. Some off-brand sources blend in unknown byproducts, risking inconsistent assay, and unpredictable downstream reactivity. By preparing each batch ourselves, we keep a direct link between raw material input and product output. Batch records track every solvent, catalyst, and filter—no shortcuts or hidden costs. End users get a clearer audit trail and more predictable results, cutting down on troubleshooting or rework.

    Balancing Scalability and Purity—Lessons From the Floor

    Sourcing 3-Aminothiophene-2-Carboxamide from a dedicated manufacturer means more than getting a drum with a label. Scaling up this material isn’t simply a matter of running a reaction larger. Key byproducts—regioisomers, over-aminated species, or sulfoxide derivatives—can creep in if the reaction’s temperature swings even a few degrees outside spec or if raw materials vary in quality. Our experience shows that impurity profiles drift faster at larger scales, where mixing speeds and cooling gradients shift subtly. We use parallel batch records for both kilo and multi-ton lots, validating that process controls transfer effectively.

    Isolation, too, brings surprises. The compound’s solubility pattern shifts slightly with scale, so crystallization times and filtration speeds need routine adjustment. Fine powders risk electrostatic charging in dry winter months, so our team alternates between nitrogen overlay and humidity balancing to keep product free flowing. Over the years, these “little” operational choices have helped our clients trust that a kilogram sample matches their gram-scale tests.

    Reliability in Project Timelines

    Nothing stalls a drug discovery program faster than delays in core building blocks. As a direct maker, we’ve fielded crisis orders from groups stuck waiting on shipments rerouted through intermediaries. Years ago, a midsize pharma partner saw its schedule unravel after two kilo shipments arrived with inconsistent spectral readings and batch traceability gaps—repurified product from a third-tier supplier. We expedited our run, delivered a batch within five days, and the project continued on track (with plenty of relief from the scientists). That’s the daily backdrop—reliable material helps our partners meet grant timelines, push clinical candidates forward, and get regulatory submissions right on the first try.

    Direct feedback loops with users inform our production strategy. If a regular customer needs a special grade with lower residual solvent or tighter heavy-metal limits for a preclinical batch, we adapt our line. This direct connection sets manufacturing apart from reseller channels. Customers avoid red tape and ambiguous stock status, which cut down on late project surprises.

    Safety and Compliance: A Hands-On Perspective

    Our operators face the risks and rewards of 3-Aminothiophene-2-Carboxamide day in, day out. We have learned the compound’s properties by handling it directly—not from downloaded MSDS sheets, but from fitting new dust extraction, updating containment procedures, and fielding questions from regulatory inspectors. Though this aminothiophene is generally considered a low acute hazard, we treat it like any chemical intermediate: enclosed charging, routine exposure monitoring, and operator training tailored to product specifics.

    The company invested early in on-site analytical capability. We run batch release testing for heavy metals, residual solvents, and organic impurities in our own lab. This practice supports both customer audits and our own peace of mind—every label on a drum means a batch that our own team has scrutinized. We build documentation to help downstream users pass audits with regulatory authorities. With new global rules, especially in pharmaceutical applications, paperwork and compliance follow the molecule every step of the way.

    Why Direct Manufacturing Stands Out

    Years in the business reveal a pattern—sourcing from the producer offers fewer surprises, more transparency, and a much shorter distance between customer request and delivered product. We maintain direct control over raw material acquisition, batch timing, and process improvement. If upstream shortages hit, we shift procurement strategy or adapt schedules in-house. We share process changes proactively with users, not after the fact.

    Contract manufacturing organizations (CMOs) and third-party brokers offer access but rarely provide detailed process background or open channels for process improvement. Our staff troubleshoot directly with R&D teams: if customers hit a new synthetic step that fails due to reactivity or solubility, we propose new isolation or purification tweaks in-house. This approach means our customer partnerships go deeper—real process data replaces guesswork.

    Industry Challenges: Meeting Tomorrow’s Needs

    Recently, global disruptions have shifted supply chain expectations. Direct users of 3-Aminothiophene-2-Carboxamide worry about origin traceability, reduction of carbon footprint, and access to batch-level data. As a manufacturer, we address these concerns up front. Regular audits by external partners validate both our raw material selection and waste stream management. For those pursuing green chemistry, we welcome collaboration around solvent reduction and reuse. Incremental changes in process yield cumulative sustainability benefits—not headline announcements, but stepwise progress.

    Customers in regulated industries look for material that offers more than a matching chemical structure. We process requests for animal-origin-free manufacture, extra certificates of origin, REACH-documented registration, and tailored lot sizes. These extras bring administrative effort, but they pay off in stronger relationships and future-proofed supply chains.

    Practical Solutions: Integration With Customer Programs

    Our in-house technical team responds to custom needs promptly. Scientists on the customer side seeking analytical support or alternative shipment forms (crystalline, micronized, or solution in DMF) reach us directly. Weekly logistics meetings coordinate output from production with the shifting schedules of our partners, ensuring small and large orders do not sit in inventory too long. The result—less warehouse aging and more confidence for R&D labs starting multistep syntheses.

    For clients running continuous processing or requiring just-in-time delivery, we organize synchronized shipping and in-process QC sampling. Materials follow the customer’s workflow rather than forcing a mismatch with commodity supply models. We have found this adaptability wins more trust than rigid minimum order policies. Over time, our operations align with client needs, lowering risk for both sides.

    Commitment to Data Integrity

    Nothing builds trust like transparency. We keep original chromatograms, NMR spectra, moisture assays, and COAs for every batch of 3-Aminothiophene-2-Carboxamide, storing documentation in both analog and digital archives. If a customer asks for historical data or a sample retest, we pull records by batch and share all results openly. Data review forms part of our annual internal quality audits, and we train new staff to treat sample documentation as a scientific record, not regulatory paperwork.

    Long-term clients sometimes request old batches for back-compatibility testing. Our laboratory retains samples from every production run—no batch leaves our standards archive without a corresponding reference. This level of traceability brings peace of mind for users who need robust chain-of-custody throughout the product’s lifecycle. Auditors regularly visit and confirm not just present process, but historical commitment.

    Continuous Improvement: Beyond the Brochure

    As technical demands evolve, our site integrates feedback from partners in discovery, scale-up chemistry, and process engineering. Trials of new drying techniques, particle-size analysis methods, and green chemistry protocols are driven by challenges our customers share. Rather than relying on old habits, we encourage staff to bring process suggestions from the floor directly to the improvement roadmap. Every time we ship a new lot, it reflects both tested protocols and recent lessons learned.

    Customers give us early warning when an impurity trend appears, or a solubility hiccup disrupts their program. Instead of hiding problems, we bring teams together for root-cause identification and shared troubleshooting. This cycle of feedback and improvement means that every new shipment aligns better with actual research needs, rather than static catalog assumptions.

    The Future: Collaboration and Shared Success

    Looking ahead, our work with 3-Aminothiophene-2-Carboxamide increasingly depends on real collaboration. Fields from pharmaceuticals to advanced materials now share more complex requirements for traceability, performance, safety, and ecological responsibility. We invite partners into the process—open discussions, plant visits, and joint improvement projects help us make adjustments that matter. By staying close to those using the compound day-to-day, our standard of quality and reliability grows sharper.

    What separates our product from others is not just the molecule itself, but the sum of daily attention to detail, documented process integrity, and the relentless focus on improvement. Our approach builds confidence for the users pushing boundaries in chemistry and application, knowing their core intermediate comes from a trusted, responsive source.