4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE

    • Product Name: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE
    • Chemical Name (IUPAC): 4-chloropyridine-2-carboxamide
    • CAS No.: 33252-74-1
    • Chemical Formula: C6H5ClN2O
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@boxa-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    275190

    Product Name 4-Chloro-pyridine-2-carboxylic acid amide
    Cas Number 20265-39-0
    Molecular Formula C6H5ClN2O
    Molecular Weight 156.57
    Appearance White to off-white solid
    Melting Point 174-178°C
    Solubility Soluble in DMSO, slightly soluble in water
    Purity Typically ≥98%
    Storage Conditions Store at room temperature, keep container tightly closed
    Smiles C1=CC(=NC=C1C(=O)N)Cl
    Inchi InChI=1S/C6H5ClN2O/c7-4-2-1-3-8-5(4)6(9)10/h1-3H,(H2,9,10)
    Synonyms 4-Chloropicolinamide

    As an accredited 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White HDPE bottle containing 25 grams of 4-Chloro-pyridine-2-carboxylic acid amide, securely sealed, labeled with hazard and product information.
    Container Loading (20′ FCL) 20′ FCL container loaded with securely packed bags/drums of 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE, palletized for safe chemical transport.
    Shipping 4-Chloro-pyridine-2-carboxylic acid amide is shipped in tightly sealed containers, protected from moisture and light. It is handled as a non-hazardous material under normal transport regulations. Ensure packaging prevents leaks and complies with local chemical safety guidelines. Store and ship between 2–8°C to maintain product stability.
    Storage 4-Chloro-pyridine-2-carboxylic acid amide should be stored in a tightly sealed container, protected from light, moisture, and incompatible substances. Store at room temperature in a cool, dry, and well-ventilated area. Avoid exposure to strong oxidizing agents, acids, and bases. Clearly label the container and ensure proper chemical storage compatibility. Employ standard laboratory chemical storage safety protocols.
    Shelf Life Shelf life of 4-chloro-pyridine-2-carboxylic acid amide: Stable for 2–3 years when stored in a cool, dry, dark place.
    Application of 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE

    Purity 98%: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with purity 98% is used in pharmaceutical intermediate synthesis, where high purity ensures minimal side reaction formation.

    Melting Point 180°C: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with melting point 180°C is used in high-temperature coupling reactions, where thermal stability allows efficient product formation.

    Moisture Content <0.5%: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with moisture content below 0.5% is used in organometallic catalyst manufacturing, where low moisture prevents catalyst deactivation.

    Particle Size <50 microns: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with particle size less than 50 microns is used in flow chemistry setups, where fine particles enable homogeneous dispersion.

    Stability Temperature 120°C: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with stability temperature up to 120°C is used in continuous processing, where chemical integrity is maintained during extended runs.

    Assay 99%: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with assay 99% is used in agrochemical intermediate synthesis, where high assay improves yield and downstream processing consistency.

    Residue on Ignition <0.1%: 4-CHLORO-PYRIDINE-2-CARBOXYLIC ACID AMIDE with residue on ignition below 0.1% is used in API development, where low residue reduces contamination risk.

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    Certification & Compliance
    More Introduction

    4-Chloro-Pyridine-2-Carboxylic Acid Amide: A Manufacturer’s Perspective

    Understanding the Core of 4-Chloro-Pyridine-2-Carboxylic Acid Amide

    Having worked with 4-chloro-pyridine-2-carboxylic acid amide in a production environment day after day, I see how each batch we develop becomes a building block for further innovation. We produce this chemical with a focus on its structure and its practical application. At its core, this compound, with CAS number 2479-23-8, takes a key role in pharmaceutical synthesis, agrochemicals, and specialty fine chemicals. The importance of this molecule does not lie solely in its physical appearance or purity reads on a specification sheet, but in the real-world results our clients experience when using it in process development or manufacturing.

    From Our Manufacturing Line to Real-World Application

    Every time we charge reactors with the raw materials that yield this amide, we handle the transformation with care because small changes ripple throughout downstream reactions. Years of experience have taught us that clients trust us not just for the purity but for the consistency between lots. Our typical product features a purity of over 98% as measured by HPLC. This single figure hides all the internal controls, robust process parameters, and final product checks done by skilled technicians with hands-on knowledge and a keen eye for anomalies.

    While molecules with similar names appear in the market, subtle differences in structure shape their performance in end-use environments. As manufacturers, we know the impact of a misplaced substituent on a pyridine ring. For example, substituting a chlorine for a different halogen or moving the amide group to another ring position alters reactivity. In pharmaceutical intermediates, these details dictate which downstream transformations succeed and which fail. We see more than just numbers on an NMR spectrum or mass trace; we interpret what those signals mean for the scientist who relies on our product in drug development.

    The Real Substance Behind 4-Chloro-Pyridine-2-Carboxylic Acid Amide

    Production of this amide is no routine effort. Over years, our team refined each step from raw material sourcing to purification. Sourcing chlorinated pyridine with reproducible quality is not always straightforward. The amide-forming reaction benefits from exact stoichiometry and carefully controlled temperature profiles. These seem like minor production points, but from the inside, a variation outside the optimal range creates knock-on effects in color, melting point, and impurity profile. Missing such signs during final isolation often means returns, downtime, or worse, a disappointed customer.

    On paper, a molecule is a collection of atoms and bonds. In practice, every kilogram carries the weight of quality indicators that influence how smoothly pharmaceutical partners scale their syntheses. That's why regular collaborative exchanges with R&D teams and insistence on tight in-process controls have shaped our product into a reliable cornerstone for further chemical transformations.

    Measuring Quality Through the Entire Lifecycle

    Ongoing quality doesn’t end with meeting a written specification. We hold every production lot to detailed standards using chromatography, melting point analysis, and moisture checks. It is not a box-ticking exercise but an expectation that if something looks unusual—off color, unexpected by-product, or shift in melting point—a skilled chemist investigates before approval. Larger producers may automate everything, but hands-on checks from a seasoned staff member offer a level of oversight machines haven’t replaced.

    Quality assurance extends past instruments and analytical data. We work with solvent suppliers, ensure stable intermediate storage, and adjust isolation procedures in response to seasonal humidity. Attention to such details becomes crucial for maintaining reliable chemical quality. Speaking directly with process owners on the client side, we learn what matters most in their applications—batch-to-batch reproducibility, reactivity profile, and ease of purification in multistep synthesis. Feedback loops from these conversations replace assumptions and continuously shape how we produce this amide.

    Differences That Matter: Distinction from Related Products

    Among pyridine derivatives, 4-chloro-pyridine-2-carboxylic acid amide stands apart from analogs like 2-chloro-pyridine-4-carboxamide or non-halogenated variants. From experience, the position of the chlorine and amide group directly influence reactivity in nucleophilic substitution reactions. Synthetic chemists seeking specific regioselectivity or electronic effects need the substitution pattern to match their process. We know from customer reports that failures or yield drops often trace back to incorrect isomer selection or subtle impurity interference. For this reason, our lot documentation always includes batch-level NMR and HPLC traces, not as a formality but as information that speeds troubleshooting for development teams.

    Because we control the synthesis route, even minor differences in manufacturing conditions show up in impurity profiles. We see customers who transition between suppliers run into issues with crystallization or downstream cleavage, not easily fixed by solvent swaps alone. The feedback from these stories is clear: changes in synthetic strategy appear subtle in the lab, but at production scale, even small differences mean costly adjustments.

    Practical Use: Insights From Direct Experience

    Many clients contact us with requests for specific particle sizes or granule forms. The reality: chemical purity outweighs most particle issues, as users typically dissolve or react the amide in solvents. Still, for select applications, small batch processing offers flexible grinding or wet-milling steps, which our team can support on demand. This responsiveness keeps the material aligned with each partner’s needs, even as those needs evolve in scale or process step.

    Some intermediates create headaches with dust, static, or clumping; over time, we've developed targeted handling procedures to address these. Use of sealed, resealable packaging adds another layer of control, minimizing product loss and exposure. Whether the client operates kilo-scale or metric ton reactors, proper storage, and transfer protocols greatly impact both yield and operator safety. Insights like these come only with years of hands-on practice, and sharing them shortens troubleshooting for new customers.

    Beyond the Molecule: Supporting Innovation in Application

    Developers working in pharmaceutical and agrochemical research continually push for shorter routes, fewer steps, and better atom economy. In our experience, this amide fits neatly into modern synthetic strategies for heterocycle assembly, especially as a precursor for fused-ring systems or ligands. We track how customers deploy the product to build more complex biologically active scaffolds. Collaborations with industrial scientists often yield novel transformations—a testament to the flexibility of the core structure.

    As regulations tighten and green chemistry principles gain ground, our approach adjusts accordingly. Each solvent change, purification tweak, or improvement in atom efficiency feeds back into safer, less wasteful production. The pressure to reduce hazardous waste and volatile organics has pushed us to innovate in both process optimization and end-product handling. Ongoing attention to these details brings lasting value for our customers and the broader chemical industry.

    Why Experience Matters in Sourcing Chemical Intermediates

    Many chemical catalogs list this amide, often drawn from warehoused stock or brokers. From the inside, we see how slight profile changes between batches or suppliers create ripple effects at production scale. Our partners realize that consistent, reliable access to a product comes from direct relationships with the manufacturer. When a process complication arises—unusual color, solubility shift, sporadic impurity—the manufacturer stands able to dive into records, review raw material lots, and trace subtle synthesis history. Quick fixes or workarounds lack staying power, while long-term process familiarity provides lasting reliability.

    Customers sourcing from us leverage the institutional memory collected over hundreds of production runs. Small process adjustments—change in cooling rate, reagent quality, final wash solvent—make big differences in how the amide performs in critical reactions. Direct feedback from chemists and production engineers consistently shapes our operational tweaks and long-term investment in equipment upgrades.

    Sustainability and the Changing Landscape of Specialty Chemicals

    Global chemical manufacturing faces growing calls for improved sustainability. Direct feedback from international partners about tightening environmental controls, waste disposal fees, and the push for energy-efficient synthesis shapes our outlook. Over the years, our own process for producing this amide has moved from energy-hungry solvent systems to a leaner, cleaner setup. Each step—waste minimization, solvent recycling, hazard reduction—has come from hard-earned experience, not abstract commitment. This shifts from lab-scale tinkering to plant reality only with rigorous planning and real-world benchmarking.

    Committing to energy-efficient synthesis is more than a marketing angle for us. Every step we redesign—whether it’s a more selective chlorination or an aqueous work-up that produces cleaner waste streams—comes after trial, error, and feedback from production chemists. We share these lessons openly with industry colleagues who face similar challenges, and this spirit of collaboration propels the entire industry forward.

    Insight Into Regulated and Specialty Markets

    Pharmaceutical and agrochemical sectors bring tight regulatory oversight to every intermediate. Audit trails, material origin, and consistency in impurity profiles stand under persistent scrutiny. We keep records in detail: raw material batch IDs, in-process monitoring logs, final QC datasets. Every time a customer requests a statement for regulatory review or a new impurity benchmark, our history of proactive documentation pays dividends. Third-party audits don’t catch us off guard because our everyday work aligns with the highest standards.

    Over time, regulatory expectations shift. Limits on residual solvents, impurity thresholds, or banned by-products require agility from the manufacturer’s side. Our own experience with early warnings and regulatory updates heads off crisis, saving clients time navigating red tape. Honest, open exchanges across the supply chain mean regulatory compliance stays an ongoing process, not a late-stage rush.

    Lessons Learned from Day-to-Day Production

    Equipment failures, raw material delays, weather fluctuations—real production environments never run by the book. Each challenge, whether mechanical or chemical, becomes a source of process improvement. Early batches of 4-chloro-pyridine-2-carboxylic acid amide sometimes suffered from variable crystal sizes or recurring trace by-product. After analyzing root causes, we found simple fixes in agitation speed, drying cycle, and raw material pre-cleaning. The only way these lessons unfold is through direct engagement across every stage of manufacture.

    Clear, concise communication—from shop floor to R&D—drives continuous improvement. Factory operators flag small changes that could mask larger quality trends. Chemists trace micrograms of an impurity over multiple lots until the production process is truly robust. Every improvement, whether in yield, purity, or safety, comes from engaged staff handling the material, not from detached oversight.

    These hands-on realities build out a foundation that buyers and technical teams can trust. Standardized product releases, complete batch histories, and reliable analytical support reflect not bureaucracy but an ingrained attitude of responsibility for every kilogram shipped.

    Support That Goes Beyond the Sale

    Dealing directly with manufacturers, customers develop more than a mere transactional link. Many times, a minor question about solubility or suggested drying protocol escalates to a collaborative effort to tweak a reaction or solve a scale-up problem. Over years, these interactions build trust and shared understanding.

    We know from direct conversations with our network that many challenges faced in process development stem not from the active step, but from an unexpected issue arising in an upstream intermediate like ours. Rapid, direct support—backed with batch-specific data and informed recommendations—builds confidence among R&D and process teams. No amount of catalog description can replace the practical reassurance a manufacturing team brings to the table when something unexpected arises.

    Anticipating Future Needs in Chemical Manufacturing

    The next wave of chemical manufacturing sits at the intersection of automation, sustainability, and end-user collaboration. Technological advances in in-line analysis promise faster release cycles, while renewed attention on green processes focuses investment in atom economy and waste reduction. Our experience shows that close dialogue between manufacturer and client supports responsible growth for both sides.

    By maintaining transparency, consistency in quality, and openness to feedback, our team ensures 4-chloro-pyridine-2-carboxylic acid amide remains a dependable tool for innovators. For every advancement in synthetic chemistry that arises, a team of experienced manufacturers stands ready to refine, optimize, and support the realities faced in production plants, R&D labs, and pilot lines.

    We believe real progress happens not in isolation but through the shared lessons and expertise built by everyone in the supply chain. Each molecule produced carries with it more than just its atomic makeup—it contains the collective insight, diligence, and responsibility of those who made it.