2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI)

    • Product Name: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI)
    • Chemical Name (IUPAC): 4-oxo-1,4-dihydropyridine-2,6-dicarboxylic acid
    • CAS No.: 499-83-2
    • Chemical Formula: C7H5NO4
    • 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

    522701

    Name 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI)
    Molecular Formula C7H5NO5
    Molecular Weight 183.12 g/mol
    Cas Number 499-83-2
    Appearance White to off-white solid
    Melting Point 244-246 °C (decomposes)
    Solubility In Water Slightly soluble
    Density 1.7 g/cm³ (approximate)
    Chemical Class Pyridinecarboxylic acid derivative
    Synonyms Quinolinic acid
    Pubchem Cid 1063

    As an accredited 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White powder in a tightly sealed amber glass bottle, labeled with hazard symbols and product details. Quantity: 25 grams.
    Container Loading (20′ FCL) 20′ FCL container typically loads ~16–18 metric tons of 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo-, securely packed in drums.
    Shipping 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) is shipped in tightly sealed containers, protected from moisture and light. It should be handled as a potentially hazardous chemical, following all regulatory guidelines for transportation, including appropriate labeling and documentation, and kept at cool, stable temperatures to maintain chemical stability.
    Storage 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- should be stored in a tightly closed container in a cool, dry, and well-ventilated area. Protect from light, moisture, and incompatible substances such as strong oxidizers. Store at room temperature and ensure proper labeling. Avoid conditions that could lead to contamination or deterioration of the chemical.
    Shelf Life Shelf life of 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- is typically 2-3 years when stored in a cool, dry place.
    Application of 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI)

    Purity 99.5%: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) with purity 99.5% is used in pharmaceutical intermediate synthesis, where it ensures high product yield and minimized side impurities.

    Molecular Weight 167.12 g/mol: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) with molecular weight 167.12 g/mol is used in ligand design for coordination chemistry, where precise molecular characterization enables accurate stoichiometric assembly.

    Melting Point 240°C: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) with melting point 240°C is used in high-temperature polymer synthesis, where its thermal stability maintains polymer structure during processing.

    Particle Size <10 µm: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) with particle size less than 10 micrometers is used in advanced materials fabrication, where fine dispersion enhances material homogeneity and reactivity.

    Stability Temperature up to 200°C: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) with stability temperature up to 200°C is used in catalytic applications, where thermal endurance allows operation in elevated temperatures without degradation.

    HPLC Grade: 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI) of HPLC grade is used in analytical chemistry applications, where its ultra-high purity facilitates reliable chromatographic analysis.

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    Certification & Compliance
    More Introduction

    2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- (8CI)(9CI): Reliable Solutions from Our Production Floor

    Purpose Behind Manufacturing

    Making 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- isn’t just about chemistry. Our crews learned early that details matter every step of the way, from controlling oxidation rates to maintaining a dust-free staging area. Over the years, we stuck with this specialty molecule because chemists in pharma, fine chemicals, and research labs kept asking for it. The feedback we heard most came down to clarity and consistency—labs can’t afford impurities that throw off analytical benchmarks or synthetic routes. We kept a dialogue open with downstream users—analytical chemists, bench scientists, and custom synthesis professionals—because their results reflect our process discipline.

    The market gives you plenty of off-the-shelf pyridine derivatives. Despite that, reliable sourcing for the 1,4-dihydro-4-oxo structure brings a different set of expectations. There’s no shortcut in crystallization protocols, not if you want batch-to-batch reproducibility. We realized there was a gap: traders and consolidators offered variable material, but staying in control of the full reaction chain at our plant meant greater assurance. Our roasting ovens, filtration rigs, and testing lab all serve one task—meeting the evolving needs of research innovators.

    Core Advantages

    Our line of 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- comes from a team with hands-on operating expertise. Being directly involved in upstream synthesis protects our customers from guesswork. Batch records tell the authentic story on purity and impurity profiles, solvent residues, and trace elements. Polishing up the final yield presents plenty of challenges, and a whole list of lessons stands behind our methods—down to keeping humidity steady during drying, and making sure vacuum lines aren’t introducing airborne microcontaminants.

    Our crew put in the hours to refine particle sizing for easier handling—too fine and it compacts, too coarse and solubility takes a hit. Chemists care about getting a uniform feed into reactors or mixing vessels. We hold each batch against reference spectra, and titration checks weed out unwanted side reactions. It’s routine for us to provide samples or analysis reports if a new customer wants assurance before approving a bulk order.

    Real-World Applications

    2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- fits into several reaction schemes. Its rigid structure and functional groups make it popular for metal chelation experiments, coordination chemistry, and specialty ligand frameworks. Some researchers dig into its behavior under controlled hydrogenation reactions, while others modify it for use as an intermediate step in more complex pharma synthesis. We’ve even had feedback from academic labs using the compound in studies targeting photocatalytic applications. The point is, demand doesn’t come from one single end market—a good number of our orders head to research teams who value repeatability as much as maximum purity.

    You can see the impact of cleaner starting materials in both yield and downstream side-product formation. Many industrial clients have told us that switching to our supply cut their troubleshooting sessions in half. You don’t need to fight against unknown peaks in the NMR or unexplained color shifts in the product solution. Our days on the line taught us that anything less than clarity in a starting reagent adds more hours in the lab, more wasted solvents, more delayed reports to stake-holders.

    Production Perspective: How Our Facility Adds Value

    Internal control makes the difference. We’re not sub-contracting the work or re-bottling from a third-party vendor. Each step kicks off with routine checks on incoming raw materials—we don’t overlook the basics. Thermal monitoring during the condensation step gets carefully tracked, and we map batch times to ensure thorough transformations. Our line keeps solvents contained, and we recover what we can for re-use, limiting waste while keeping air and water emissions within strict permit standards. Post-reaction, our staff runs HPLC and IR checks to confirm the purity, with follow-up checks by a separate analyst, saving time on repeat remediation.

    Strength comes from our training culture. Skill grows from repetition. No two days look the same in large-batch production, but everyone knows their role, and experienced operators spot subtle color changes or unusual odors before QC gets the samples. This hands-on vigilance matters more than any automation or software dashboard.

    Once we reach the isolation stage, the challenge shifts to drying and granulation. Too much moisture, you get caking; not enough, you risk static charge and dusting out. Storage bins get regular inspection for clumping, and every final shipment carries full lot trace records. Our supply chain doesn’t end until the end-user signs off. If there’s a mixing problem, or a sample needs a different mesh size, we tackle it directly, not through layers of middlemen.

    Specifications and Quality Benchmarks

    Quality assurance isn’t a checkbox or a certificate on the wall. Customer feedback kept us steady on one point: purity numbers alone don’t tell the whole story. We keep free pyridine and residual starting acid below detectable levels to reduce risk of off-target reactions, especially for those using the compound as a scaffold in pharmaceutical intermediates. Each batch undergoes thin-layer chromatography and melting point checks, and our documentation lines up with customer requirements for analysis like MS and NMR confirmation.

    Moisture can ruin a run. To address that hazard, our final product typically runs below 0.2% water by Karl Fischer titration. Color and particulate tests matter just as much: excess discoloration, even if innocuous, raises questions in downstream QC and can get a batch flagged for further analysis or rejection. By focusing on both chemical purity and appearance, we keep customer QC calls brief and predictable.

    Usage Practices from Direct Experience

    Talking to end-users has shaped how we finish each lot and design packaging. Researchers using the compound in metal-organic synthesis want reliable weighing, clean handling, and clear dissolution. We package bulk and lab-scale shipments in double-sealed drums or foil-lined containers to block humidity shift. Chemists spend long hours tracking every fraction and side-product; giving them headaches with packaging dust or mislabeled shipments would never cut it.

    The work doesn’t stop once the drum leaves our warehouse. We’ve fielded calls from technical users asking about solvent compatibility, recrystallization tips, and storage tricks for extended shelf-life. We take these questions seriously. Each lesson we learn in troubleshooting gets folded straight into staff training or batch documentation. Our plant leaders often share direct Q&A with chemists—no generic hotlines or faceless sales reps. If someone runs into an unexpected reaction, we talk through solvent choice, temperature, and any risk of cross-contamination.

    Distinguishing Factors from Other Market Offerings

    Many supply houses list similar-sounding pyridine carboxylic acids, but material coming from traders often varies widely in look, odor, and purity. Over the years, we ran side-by-side comparisons with “market standard” specs sold at bargain rates. One key point became clear: off-spec batches show up most in “mixed lot” shipments, where repackagers blend material from multiple origins.

    Our plant runs closed cycles—no cross-dumping reaction waste, no swapping of raw materials between product lines. During customer site audits, visitors commented on the crisp boundaries between our purification bays and storage rooms—critical for labs verifying content down to single-digit ppm. Each container comes with a batch-specific analysis, not a photocopy of a generational old certificate. Repeated sampling showed our lots produced fewer colored side solids after reaction compared to generics, shielding our end-users from purification headaches.

    Commodity suppliers usually route production through tollers or contract plants with outside QC. We learned the hard way that direct involvement—being present on the shop floor—cuts down on transit contamination, mishandling, and “unknown unknowns.” That kind of discipline builds the confidence to deliver sample lots for new methods, and to stand behind adjustments in mesh size or crystal habit on demand.

    Troubles and Turning Points in Routine Synthesis

    Sticking to process control during summer humidity spikes challenged us. We installed dehumidifiers and ramped up small-batch pilot runs to test new conditions before modifying full scale production. Customer feedback helped push us forward. For one client developing a new catalyst route, we ran a handful of experimental drying cycles to hit a lower target for residual moisture. Succeeding at that task opened doors to other high-sensitivity applications, since we could guarantee a tighter water spec.

    On another project, a pharmaceutical partner asked for verification on trace metals. We invested in a fresh round of ICP-MS instrumentation, then validated our cleaning protocols with outside auditors present. These steps meant up-front investment and time away from standard runs, but paid back over the long haul—we clinched long-term contracts with teams who don’t want to gamble with incoming raw materials.

    Industry Shifts and Our Response

    With regulatory standards growing tighter worldwide, generic materials don’t meet increasing scrutiny—the bar keeps rising for impurity thresholds and documentation. We study international compliance guidelines and proactively introduce best practices rather than waiting for recalls or flagged shipments. Customers rely on transparent documentation, not only for their own internal controls, but for regulatory filings as their products move downstream. Preparing full analytical dossiers with traceability became standard, not an extra.

    Sustainability matters to our process. Since switching to a closed-loop solvent recovery system, we’ve cut waste by over a third. Our maintenance team tracks energy usage across every major piece of equipment, aiming to lower our footprint without sacrificing end quality. The move to more sustainable chemistry has interested both research-heavy clients and established pharmaceutical firms, who know regulatory bodies routinely audit solvent usage and disposal.

    Future Directions: Listening to the Lab Bench

    We take cues from customers setting up new hydrogenation routes, running advanced chromatographic separations, or tweaking conditions in high-throughput screening. The backbone of this business comes from a feedback loop—a direct exchange between our manufacturing crew and the people handling product on the bench. We watch for new requests: an unusual polymorph, a different granulation, a special packaging need for glovebox transfer. Sometimes the work means running after-hours trials to fine-tune a procedure; sometimes it means pausing to do a root-cause analysis after a reported anomaly.

    Supporting custom and research work calls for both flexibility and discipline. We invest in operator training and keep a calendar of preventive maintenance to cut down on off-spec events. Investing in staff skill and modern equipment means we can address questions directly and transparently—no creeping delays, no off-topic sales chatter.

    As new research demands show up in academic and industrial reports, our own technical team keeps track. If a new application trend pops up, we update protocols quickly, sometimes before a customer request even lands in our inbox.

    Summary: Value from Time-Honored Experience

    Working with 2,6-Pyridinedicarboxylic acid, 1,4-dihydro-4-oxo- taught us that a hands-on, detail-heavy approach changes the story downstream. We see our product at work in clean, high-yielding syntheses, precise analytical benchmarks, and new catalysis development. Our manufacturing history—rooted in listening, adapting, and direct involvement—puts every batch on solid ground. We stand for measurable quality, open communication, and the recognition that strong, technical input from customers drives the next round of improvements. This is the way we’ve built—and continue to build—our reputation for reliable, ready-to-use specialty chemicals.