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4-Antipyrinecarboxaldehyde

    • Product Name 4-Antipyrinecarboxaldehyde
    • Alias 4-Formylantipyrine
    • Einecs 629-470-2
    • 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
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    Specifications

    HS Code

    934479

    Compound Name 4-Antipyrinecarboxaldehyde
    Cas Number 1252-16-2
    Molecular Formula C12H10N2O2
    Molecular Weight 214.22
    Appearance Yellow crystalline solid
    Melting Point 165-168°C
    Solubility Soluble in organic solvents
    Synonyms 4-Formylantipyrine
    Purity Typically ≥98%
    Storage Conditions Store at room temperature, away from light and moisture
    Structure Type Pyrazolone derivative

    As an accredited 4-Antipyrinecarboxaldehyde factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 4-Antipyrinecarboxaldehyde is packaged in a 25g amber glass bottle, sealed with a screw cap, and labeled for laboratory use.
    Shipping 4-Antipyrinecarboxaldehyde is shipped in tightly sealed, chemical-resistant containers to prevent leakage and contamination. It should be transported under ambient conditions unless otherwise specified, and handled according to standard hazardous chemical protocols. Ensure compliance with all local, national, and international regulations for shipping laboratory chemicals. Avoid extreme temperatures and direct sunlight during transit.
    Storage 4-Antipyrinecarboxaldehyde should be stored in a tightly sealed container, protected from light and moisture, in a cool, dry, and well-ventilated area. Keep away from incompatible materials such as strong oxidizers and acids. Store at room temperature, preferably below 25°C. Proper labeling and segregation from food and combustible substances are essential to ensure safety and chemical stability.
    Application of 4-Antipyrinecarboxaldehyde

    Applications of 4-Antipyrinecarboxaldehyde in Industrial Manufacturing

    4-Antipyrinecarboxaldehyde serves as a key intermediate in multiple industrial sectors, supporting high-value synthesis and specialty product manufacturing. Our production supports rigorous downstream demands with consistent purity and tight specification control.

    1. Pharmaceutical API Intermediate Synthesis

    This compound is integral to the advanced synthesis of active pharmaceutical ingredient (API) intermediates. It forms a reactive site in the construction of complex heterocyclic drug molecules used for pyrazolone-derived medication. Facilities introduce it in condensation and cyclization stages, allowing precise modifications to molecular scaffolds demanded by patent-protected APIs. Manufacture requires strict solution feeding and controlled agitation to avoid impure side-products, critical for subsequent GMP release.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • EU GMP Part II (Annex for Starting Materials)
    • USP/EP/JP monographs for related APIs
    • FDA 21 CFR 210/211 for finished dosage forms

    Typical usage ratio

    • Typically 0.15–0.35 molar equivalents relative to pyridine or hydrazine ring precursors; exact ratio aligned with downstream stoichiometry and target yield.

    Downstream process integration

    • Fed into batch reactors or continuous flow lines for early-stage scaffold condensation; involved in multi-step synthesis before API isolation and purification.

    Final product types

    • Antipyretics
    • Analgesics
    • Anti-inflammatory drugs containing pyrazolone cores
    • Other niche APIs with custom heterocyclic groups

    2. Analytical Chemistry and Diagnostic Reagent Manufacturing

    Many diagnostic reagent producers employ this material to develop chromogenic and fluorogenic substrates used in clinical analytic kits. Its unique aldehyde function reacts readily with target analyte indicators, producing distinct colorimetric changes required for endpoint detection. Quality control labs rely on reproducible reactivity and certified impurity profiles to ensure low assay background and high shelf stability.

    Industry compliance standards

    • ISO 13485:2016 for medical device and reagent manufacturing
    • FDA 21 CFR 820 (QSR) for diagnostics
    • CLSI EP05-A3 for method evaluation
    • CE/IVDR conformity for EU-market diagnostics

    Typical usage ratio

    • Used at 0.01–0.2% w/v in liquid reagent or 0.3–1.5 mg/vial for dry-format kits, adjusted per detection sensitivity and substrate baseline reactivity.

    Downstream process integration

    • Reactive addition during final blending of color-forming or enzyme-coupled solutions; also pressed or lyophilized in solid kit formats post-reaction.

    Final product types

    • Clinical diagnostic kits (e.g., bilirubin, uric acid testing)
    • Colorimetric enzyme assay reagents
    • Fluorescent probe substrate blends
    • Analytical standards for laboratory QC

    3. Specialty Agrochemical Active Synthesis

    In the agrochemical sector, formulators utilize 4-antipyrinecarboxaldehyde as a structural building block for advanced pyrazolone-based herbicide and fungicide actives. Its selectivity in hydrazone formation enables tailored reactivity, crucial for patents covering emerging crop protection agents. High-concentration process feedstocks are prepared to minimize side-product contamination and to achieve batch reproducibility critical for field efficacy.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • REACH (EC) No. 1907/2006 for new substances
    • OECD Guidelines for the Testing of Chemicals
    • SDS/Labeling according to GHS/CLP Regulation (EC) No. 1272/2008

    Typical usage ratio

    • Ranged at 0.25–0.45 molar equivalents relative to amine or hydrazine partners in precursor manufacturing steps; concentration may fluctuate depending on specific product patent and target application spectrum.

    Downstream process integration

    • Charged at early synthetic step, typically as a key hydrazide or enamine precursor; often requires solvent swap or pH modification before formulation into technical concentrates.

    Final product types

    • Selective herbicides for cereals and grains
    • Systemic fungicides for horticulture
    • Seed treatment actives containing pyrazolone derivatives
    • Plant growth regulation agents

    4. Fine Chemical and Specialty Dye Synthesis

    Producers of specialty colorants incorporate this intermediate in the targeted synthesis of azo and hydrazone dyes, particularly for high-performance textiles, printing inks, and plastic colorant markets. Its aldehyde group promotes intense and stable chromophore structures. Precise dosing and process temperature control are critical, as deviations can introduce undesired isomers or color shift. Only high-purity grades support consistent shade development and depth reproducibility.

    Industry compliance standards

    • OEKO-TEX Standard 100 for textile applications
    • DIN EN 71-3 for colorants in children’s products
    • REACH SVHC substance monitoring (if applicable)
    • ISO 9001:2015 for production traceability and QA

    Typical usage ratio

    • Applied at 0.1–0.65 molar equivalents in diazotization/condensation reactions with aromatic amines; adjusted according to batch lot size and color strength requirements.

    Downstream process integration

    • Added directly to reactor vessels for chromophore coupling; post-reaction, intermediates are filtered and transferred to dye blending/finishing units.

    Final product types

    • Disperse and reactive dyes for polyester and cotton
    • Inkjet ink dispersions
    • Plastic masterbatch colorants
    • Specialty pigments for industrial coatings

    5. Research Chemical Synthesis and Custom Molecule Development

    Research and development laboratories in contract synthesis, university, and biotech sectors use 4-antipyrinecarboxaldehyde for constructing new heterocyclic scaffolds, library molecules, and reference substances. Its reactivity allows for rapid generation of novel derivatives, enabling structure–activity relationship (SAR) investigations and new lead compound identification under controlled bench-scale conditions, bolstered by analytical batch traceability.

    Industry compliance standards

    • ISO/IEC 17025 for laboratory competence
    • GLP (Good Laboratory Practice) for chemical synthesis
    • Material transfer compliance: local chemical inventories (TSCA, IECSC, DSL, etc.)
    • Internal analytical verification against NMR/GC-MS standards

    Typical usage ratio

    • Ranges between 20–120 mg per multi-mole library batch or 0.05–0.25 molar equivalents in custom explorations; dose depends on synthetic methodology and required analytical purity.

    Downstream process integration

    • Introduced in solution-phase synthesis or microwave-assisted reactions; work-up yields directly to isolation and structure elucidation sequences.

    Final product types

    • Reference chemical standards
    • SAR libraries for pharmaceutical research
    • Novel pyrazolone derivatives for patent applications
    • Specialty ligands for bioanalytical study
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    Certification & Compliance
    More Introduction

    4-Antipyrinecarboxaldehyde: Experience and Perspective from Chemical Manufacturing

    Introducing 4-Antipyrinecarboxaldehyde: What Sets It Apart

    Working in chemical synthesis for decades builds respect for compounds that don’t just fill a catalog slot but open up new potential in applied science. 4-Antipyrinecarboxaldehyde belongs to that rare group. As the producer, we see directly how this fine chemical lets scientists and technical experts shape their own projects, instead of forcing them to adapt to a poorly fitting intermediate. The chemistry behind 4-Antipyrinecarboxaldehyde appeals for its simplicity: a carboxaldehyde group at the fourth position on the antipyrine ring. This structural detail means a lot in downstream synthesis. Unlike its close cousin, 4-formylantipyrine, our product comes with controlled purity and batch-to-batch consistency—factors that researchers often overlook until they experience erratic results caused by impurities.

    The Model and Our Specifications: Practical Approach

    Our 4-Antipyrinecarboxaldehyde, model number APCA-01, stands apart due to the specifics of its production process. We focus attention on minimizing byproducts at every step, and our experience with small-scale pilot runs showed early on where heat ramps or solvent selections trip up yield or trigger unexpected side reactions. After revising work-up and washing procedures, our present batches test above 99% by HPLC, which isn’t just a number on a sheet. Customers working in sensitive pharmaceutical syntheses or complex organic routes feed back to us: they notice a difference in downstream reactions, as fewer extraneous side-products form, and yields often jump by several percentage points. We supply the material most often as a crystalline solid, and particle size stays consistent for better sample handling. Every order comes in sealed amber glass, preserving the aldehyde function until use.

    Usage and Application: How Chemists Rely on This Compound

    4-Antipyrinecarboxaldehyde slots into many labs as either a research tool or an essential intermediate. In the past few years, requests from pharmaceutical R&D teams have climbed, probably since this compound’s aldehyde group is a versatile handle for further functionalization. Medicinal chemists have told us they use it in the careful construction of novel heterocycles, where reaction yield and purity determine the success of high-throughput screening runs. Those projects depend on dependable intermediates; fluctuating impurity levels can lead to months of wasted time or confusing biological data.

    For dye manufacturers, another key customer group, our compound’s backbone offers uncommon resonance and reactivity, letting them tune the chromophore linkages that drive pigment research. We have seen custom orders where our negotiated purity and solvent residue specifications were the difference between achieving a stable dye and ending up with decomposition during storage tests. For academic research, our product appears in published syntheses where the aim is to build complex molecules for mechanistic studies—anything from interacting with biological macromolecules to testing catalytic cycles. From our vantage point, publishing repeatable results creates trust in your research pipeline, a reality sometimes obscured by the day-to-day flurry of experiments and deadlines.

    Differences Compared to Other Related Products

    In our facility, production lines run for several pyridine, pyrazolone, and heterocycle derivatives. Newcomers sometimes lump 4-Antipyrinecarboxaldehyde with any aldehyde-labeled pyrazolone, but structural details matter. The aldehyde in the fourth ring position brings a unique reactivity profile compared to, for instance, 3-formylantipyrine or the parent antipyrine. Reactivity shifts due to resonance effects and the orientation of functional groups. In real use, we’ve seen customers fail reactions by swapping a 3-position analog for the 4-position product, chasing analytical tails for weeks, only to find reactivity differences at the heart of their problems.

    Other aldehydes, not based on the antipyrine ring, simply cannot substitute where our product’s ring system imparts stability as well as well-defined reaction kinetics. Take 4-hydroxyantipyrine, a close relative; we routinely isolate customers who misidentify one as the other, triggering HPLC failures and questionable NMR readings. Over time, we invested in better training for our staff, improved in-house reference standards, and established a system where every batch’s spectral identity is archived. This cuts the risk of mix-ups for research teams downstream and boosts the reliability of published data.

    Batch Consistency and Real-World Troubleshooting

    Not every compound walks a smooth line from plant to end-user. We’ve navigated our share of false starts and equipment headaches. Early on, we learned the raw material sources had more of an impact on the impurity profile than theory suggested. Only by locking in relationships with particular upstream suppliers could we cut unwanted contaminants—like related aldehydes and oxidized byproducts—below troublesome thresholds. Each manufacturing run now begins with not just specs, but a careful comparison to our own historical impurity fingerprints. Once, a routine batch deviated by just 0.3% in impurity content due to a slight change at the distillation step; our QC caught it before it shipped, but that near-miss reinforced the vigilance needed in specialty chemical production.

    From a management perspective, we push for every department to share the responsibility of quality: operators flag questionable product color or texture, QC analysts test not just for nominal purity, but also for any trace yet-reactive contaminants. With analytical technology moving quickly, we chase lower detection limits, always on the lookout for any shift away from our established baseline. Our experience shows that relying only on spot HPLC or commonplace GC analysis misses edge-case impurities. We expanded to include LC-MS and advanced NMR screening, scanning for even the rarest impurities that, while not always affecting the chemistry, can throw off biological results in pharmaceutical screening or disrupt downstream process optimization.

    Supply Chain Reliability from a Manufacturer’s View

    Rapid progress in chemical research hinges on uninterrupted access to reliable raw materials. Distributors and traders can sometimes slip into a cycle of sacrificing quality for speed or price. From our end, the incentive runs in the opposite direction—our future business stands on customer results and the reputation we build batch by batch. We maintain control of the whole link from raw material to final product, so we don’t rely on unknown resellers to meet or exceed our own tight standards. Controlling logistics means we regularly avoid temperature and humidity exposure during delivery, cutting the risk of aldehyde degradation which could, in unpredictable ways, affect final reactivity.

    As supply chains worldwide faced turbulence in the last several years—raw material surges, shipping crunches, and customs bottlenecks—we doubled down on maintaining buffer stocks and diversified logistics routing. Some customers have shared stories of supply running dry from third-parties mid-project, forcing costly last-minute reruns and batch cancellations. By holding reliable buffer inventories, we keep disruption to a minimum; our own process includes advance notification to major clients if any supply risk emerges, so project planning doesn’t stall unexpectedly.

    Safety, Handling, and Real-Use Lessons

    It’s one thing to claim a product handles easily—it’s another to recognize how small changes can affect day-to-day lab work. Over the years, reports from users have taught us that 4-Antipyrinecarboxaldehyde, while not classed as acutely hazardous, does release a distinct odor as aldehydes can, especially if kept at room temperature too long. We adapted our packaging protocols, storing bulk and shipment lots in inert atmospheres whenever possible, especially for shipments that will cross several time zones or climates. Our advice, gained from plant experience, is simple: transfer only what will be used that day, keep the remainder sealed, and avoid prolonged contact with open air. That level of attention preserves not only active aldehyde content but also helps prevent mystery results in sensitive research applications.

    Handling information, once a brief afterthought on a product sheet, now receives real attention from our technical team. Customers often request full spectral data and extended stability information before integrating 4-Antipyrinecarboxaldehyde into an automated system. Several times, advance sharing of stability data saved clients from unnecessary loss—one university group realized a planned multi-week storage experiment required colder, drier storage than their default, prompting them to revise their protocols and avoid a wasted semester of work.

    Minimizing Environmental Impact: Our Experience

    Chemical manufacturing walks a fine line between innovation and environmental stewardship. Tougher environmental standards, both regulatory and market-driven, push us to keep process wastes low and solvent emissions tightly controlled. 4-Antipyrinecarboxaldehyde, by its nature, demands careful waste stream management. Every kilogram produced leaves trace residues and solvents, and we’ve spent real resources on upgrading our scrubbers, solvent recyclers, and waste treatment planning. Years ago, we managed some waste water effluents with in-house neutralization, but analysis uncovered trace aldehydes still slipping through—requiring upgrades to our handling protocols. Installing a two-stage carbon filtration system solved this, but not before we revisited every upstream raw material and partner’s practices, since off-site upstream impurities can turn into compliance headaches if ignored.

    We found that listening to community groups and taking part in government-industry roundtables brings insights that purely technical meetings miss. Our plant now keeps real-time waste discharge monitoring, with quarterly disclosures publicized for both customers and local communities. These steps build trust, and, on a more practical level, insulate us from compliance surprises. In the past, we’ve helped clients map the residual impact through their value chains—from lab bench to finished pharma product—providing documentation and best-practice advice for their own environmental risk assessments.

    Supporting Research, Education, and Collaboration

    Engagement between manufacturer and end-user turns into real innovation only with open knowledge exchange. Many researchers have approached us for collaboration—sometimes to tweak batch specs for novel application, sometimes to troubleshoot unexpected results. Our technical team documents any unusual phenomena not just for in-house improvement, but to create shared resources for our partners. We also keep case studies and anonymized customer experiences, helping other clients avoid predictable pitfalls. For example, a team investigating prodrug modifications for targeted delivery ran into solubility challenges; based on earlier feedback and experiments, we shared solvent selection and preparation tips, leading to a smoother downstream reaction and better overall project results.

    Academic partnerships also fuel our ongoing process improvement. We have opened our doors to graduate students and postdocs for plant tours and technical seminars. This builds mutual respect: we learn about the latest needs from the lab side, and they get a rare look at the blunt realities of scale-up, QC, and regulatory navigation that can transform a great experimental result into a dead end or a market-ready solution. Over time, these cooperative cycles lead to steady improvement, lowering error rates in new applications and even creating co-authored publications.

    Future Outlook and Potential Upgrades

    As methods in synthesis and analytical chemistry evolve, the demands on fine chemicals rise. Our customers now test smaller and smaller sample sizes, need for higher reactivity, or ever-tighter impurity profiles. Our R&D group actively develops process improvements for 4-Antipyrinecarboxaldehyde; we constantly trial alternative synthesis routes with fewer steps or greener solvents to cut energy and water use. Solvent recovery and process recycling, once an aspiration, is normal practice, sharpening the value proposition for end-users who track not just cost per gram but also total environmental footprint. We have plans underway to further automate much of our QA workflow, reducing result turnaround time while keeping analytical rigor tight.

    Digital traceability adds another layer to user confidence. Every batch now retains full production and analytics data, paired with a traceable digital chain from raw material until client delivery. This not only supports compliance and certification demands but also helps our clients—especially those under strict regulatory control—substantiate the provenance of every molecule integrated into demanding projects.

    Conclusion: Why Manufacturer Experience Matters

    Making 4-Antipyrinecarboxaldehyde for discerning researchers draws on every part of our operational experience: production know-how, raw material sourcing, analytics, regulatory foresight, and an open feedback culture with partners in research and industry. The compound’s unique profile delivers value because every detail in its creation—from the way we monitor feeds to the way we communicate batch data—reflects the reality that even seemingly minor differences can shift project outcomes. We take pride in serving as a reliable partner to those pushing the boundaries of science and technology, welcoming every new challenge as a test of our commitment to quality, consistency, and sustainable practice.