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Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate

    • Product Name Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate
    • Alias Esmethadone
    • Einecs 256-418-2
    • 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
    VTB
    Specifications

    HS Code

    914513

    Productname Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate
    Casnumber 25336-13-0
    Molecularformula C9H11NO4
    Molecularweight 197.19
    Appearance White to off-white solid
    Meltingpoint 155-158°C
    Solubility Soluble in organic solvents (e.g. ethanol, DMSO)
    Purity Typically ≥98%
    Smiles CCOC(=O)C1=C(C)NC(=C(O)C1O)
    Inchikey CSPJVCBVQBWPFV-UHFFFAOYSA-N
    Storageconditions Store at 2-8°C, protected from light
    Synonyms Ethyl 2,4-dihydroxy-6-methylpyridine-3-carboxylate

    As an accredited Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White, sealed, high-density polyethylene bottle containing 100 grams; tamper-evident cap, chemical-resistant labeling with hazard warnings and batch details.
    Shipping Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate is shipped in tightly sealed containers, protected from moisture and light. Transport must comply with chemical safety regulations, ensuring proper labeling and documentation. The chemical should be kept at ambient temperature and handled by trained personnel to minimize any risk of spillage or contamination during transit.
    Storage **Ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate** should be stored in a tightly sealed container, protected from light and moisture. Store at room temperature, preferably in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers or acids. Ensure all containers are clearly labeled and kept away from direct heat and ignition sources to prevent decomposition or hazards.
    Application of Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate

    Applications of Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate in Industrial Manufacturing

    Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate serves as a high-purity intermediate, supporting advanced synthesis in select sectors requiring strict adherence to quality and process control. The following sectors represent principal industrial use cases, based on real-world demand and process integration.

    1. Active Pharmaceutical Ingredient (API) Synthesis for Anti-Tuberculosis Drugs

    Pharmaceutical manufacturers in anti-infective lines use this compound as a core intermediate for specific anti-tuberculosis agents. The material’s structure enables direct incorporation in multi-step syntheses, especially in the formation of pyridine-based scaffolds. High-purity batches undergo strict in-process control, focusing on trace metal content and residual solvents to ensure batch-to-batch reproducibility and compliance with pharmacopeial standards. These syntheses run in closed reactors with validated nitrogen blanketing due to oxygen sensitivity and demand for trace moisture control. Final APIs undergo full compendial testing, necessitating the use of validated raw materials that meet trackable documentation requirements.

    Industry compliance standards

    • European Pharmacopoeia (Ph. Eur.) 11th Edition Monographs (relevant intermediates)
    • Current Good Manufacturing Practice (cGMP) under ICH Q7
    • US FDA 21 CFR Part 211 (for finished API facility acceptance)
    • Certificate of Analysis (CoA) traceability for all raw materials

    Typical usage ratio

    • 15-22% w/w as a direct intermediate in multi-step synthetic routes; ratio determined by molecular equivalence and adjusted based on impurity profile of preceding steps

    Downstream process integration

    • Acts as a key building block added after initial condensation; introduced at the esterification or cyclization step depending on the synthetic pathway
    • Undergoes controlled hydrolysis or amidation as needed
    • Requires validated in-line analytical monitoring (HPLC, GC-MS) to detect impurities
    • Final isolation and purification steps completed before handoff to API finalization unit

    Final product types

    • Rifampicin drug substances
    • Pyridinecarboxylate-based anti-tuberculosis compounds
    • Other anti-mycobacterial agent APIs developed on contract or for custom synthesis orders
    • Research-grade reference standards for pharmaceutical QA/QC labs

    2. Agrochemical Intermediate for Pyridine-Pyrimidine Herbicide Synthesis

    Crop protection active ingredient producers use this raw material as an intermediate precursor in the multi-stage synthesis of pyridine-pyrimidine-based herbicides. Controlled introduction occurs in closed vessel alkylation and condensation steps, where methyl and hydroxy substitutions make it suitable for derivative formation. Highly reproducible purity supports critical reaction yields and minimization of off-target isomer formation. Quality assurance focuses on adherence to internationally recognized agrochemical production protocols, with integration into continuous-flow or semi-batch process lines. Stringent supplier qualification and traceable batch records ensure alignment with EU and US agrochemical regulations.

    Industry compliance standards

    • EU Regulation (EC) No 1107/2009 for Plant Protection Products
    • OECD Principles of Good Laboratory Practice (GLP) for substance characterization
    • ISO 9001:2015 Quality Management for agrochemical production
    • Chemical Facility Anti-Terrorism Standards (CFATS) for precursor chemicals

    Typical usage ratio

    • 8-16% by weight, adjusted based on target active ingredient load and downstream conversion efficiency during derivatization

    Downstream process integration

    • Fed directly into reactor for formation of heterocyclic pyridine intermediates
    • Undergoes subsequent reaction with substituted chloro-pyrimidines or related aromatics
    • Continuous process monitoring ensures controlled reaction stoichiometry
    • Batch documentation maintained per REACH and national pesticide laws

    Final product types

    • Pyridine-based herbicide actives (e.g., fluroxypyr, triclopyr derivates)
    • Formulated emulsifiable concentrates for crop application
    • Herbicide granule and suspension concentrates for agricultural suppliers
    • Bulk technical-grade agrochemical ingredients

    3. Pyridine-Based Dye and Pigment Intermediate

    Specialty dye and pigment manufacturers utilize this compound as a critical ring-substituted precursor for high-performance pyridine-based dyes. Its reactivity profile enables targeted ring-modification chemistry, allowing integration into azo, quinone, and anthraquinone dye frameworks. The raw material is introduced post-nitration or amidation steps, supporting the generation of vivid shade ranges with improved fastness and light stability. Quality requirements emphasize heavy metals control and defined spectral purity. Industrial dye lines require raw material batches to meet internal and customer-specified certificate protocols, along with environmental emission monitoring during thermal processing.

    Industry compliance standards

    • EU REACH Regulation (EC) No 1907/2006 Annex XVII for prohibited substances in dyes
    • Oeko-Tex Standard 100 for textile dyes (if targeting apparel/textile markets)
    • ISO 14001 for environmental monitoring during pigment manufacture
    • Industry-specific buyer audit standards for trace contaminants (e.g. heavy metals)

    Typical usage ratio

    • 5-12% of total dye intermediate weight; adjusted by shade intensity and final desired color strength in pigment granulation

    Downstream process integration

    • Enters production at ring-functionalization stage after initial backbone assembly
    • Subjected to high-temperature condensation or sulfonation depending on pigment class
    • In-process testing ensures defined purity and color index development
    • Filtered and dried before blending into masterbatch or direct end-use formulation

    Final product types

    • Pyridine-derived synthetic textile dyes
    • High-performance industrial pigments for plastics and coatings
    • Masterbatch color concentrates
    • UV-resistant pigment dispersions for industrial ink manufacturers

    4. Specialty Chemical Building Block for Electronic Material Synthesis

    Producers of advanced electronic chemicals incorporate this compound as a defined aromatic ester for the synthesis of pyridine-based functional materials, particularly in liquid crystal display (LCD) and organic light-emitting diode (OLED) manufacturing. The compound supports the introduction of custom-tailored substituents onto heterocyclic frameworks, essential for materials exhibiting regulated dielectric and photophysical properties. Electronic-grade quality mandates sub-ppm impurity content and moisture control, often supplied in high-barrier packaging under inert gas. Batch records conform to major OEM customer validation systems and require cleanroom-grade material handling from raw material docking through end-use reactor charge.

    Industry compliance standards

    • ISO 9001:2015 Quality Management for electronics chemical production
    • SEMI C3 Standard for Electronic Chemicals and Materials
    • RoHS Directive 2011/65/EU for restriction of hazardous substances in electronics
    • IECQ certification for electronic-grade supply chain assurance

    Typical usage ratio

    • 0.5-3% by weight of final precursor matrix; exact amount set based on targeted dielectric or LED performance parameters determined by device maker

    Downstream process integration

    • Used as aromatic precursor in synthesis of LC monomers and OLED emitting/transport layers
    • Incorporated by solution-phase polymerization or condensation into liquid crystal formulation
    • Material handled in Class 100 or better cleanroom with full lot traceability
    • Tested in prototype formulations before release to commercial electronics production

    Final product types

    • Liquid crystal monomers for TFT-LCD applications
    • OLED emitter or transport layer intermediates
    • Dielectric resin modifiers for high-frequency circuit boards
    • Process chemicals for advanced display and semiconductor component fabrication
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    Certification & Compliance
    More Introduction

    Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate: Manufacturer’s Experience and Perspective

    A Hands-On Introduction to Our Product

    Ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate might not grab headlines, but our teams see its importance every day as we produce it batch by batch. Over years spent refining its synthesis, we have found the subtle details of process and handling matter just as much as the chemistry. We do not approach this compound as a commodity but as a product checked and rechecked through stages that only matter behind factory doors: glassware selection, purity controls, verification steps often left unsaid. Ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate’s molecular features—its two hydroxy substitutions and ester group—shape much of its reactivity and downstream applications. We’ve seen plenty of products where shortcuts in synthesis lead to inconsistencies. Here, even faint off-notes in the reaction profile manifest as flawed finished product, making attention to detail obligatory. The methyl group at the 6-position creates a slight shift in both physical and chemical behavior, something you won’t see plainly in a chemical structure but will discover fast if you overlook temperature during purification.

    While chemical composition is easy to read on a formula sheet, the way this pyridinecarboxylate behaves under repeated heating, exposure to different solvent systems, or blending with more complex intermediates is best known through direct experience. The purity of raw materials, reaction temperature, solvent polarity, and even glassware cleanliness play huge roles. After dozens of production runs, small differences in crystallization rate and mechanical filtration make a tangible impact. These details only matter for a manufacturer handling bulk lots, not someone passing along a repackaged drum.

    Quality Grounded in Production Reality

    Many downstream users focus on a single specification—purity by HPLC, dryness by Karl Fischer, or tone by colorimeter. From a chemistry standpoint, yes, those matter; though we find that reactivity and side-product profiles often hold the true quality signature. Ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate leaves its trace in every analytic spectrum, and we back up our instrument findings with simple, consistent bench checks: solubility behavior, melting profile, and ease of activation in coupling reactions. Those with laboratory backgrounds understand a quality difference right away when their reactions run smoothly without mystery by-products. For us, direct feedback from process chemists has shaped how we tweak not only our reaction protocols but the way we finish and package this compound.

    It’s not just about numbers on a report—variability in dryness after packaging, slight differences in lot-to-lot color due to trace impurities, and response to standard reaction partners often indicate whether our product meets the standard professional chemists expect. Years of making bulk material taught us to anticipate and avoid issues well before a liquid drum or crystalline solid ever leaves our production site. Faster dissolution times in the lab, fewer filtration headaches, and consistent reactivity on pilot scale are outcomes we track closely. A company that simply resells, rather than manufactures in-house, misses the chance to spot these technical details early.

    Use Cases Informed by Chemical Structure

    At our plant, end-users range from pharmaceutical labs exploring new pyridine-based therapies to agrochemical researchers and specialty intermediate producers. The dual hydroxy groups, positioned at 2 and 4, offer ready handles for further substitution or activation, a trait researchers prize in medicinal and process chemistry. The ethyl ester moiety delivers greater versatility compared to free acids or methyl esters when participating in transesterification or amidation steps. From direct first-hand involvement, it’s clear: handling, storage stability, and purity govern outcomes more than reference sheets ever suggest.

    When a pharma R&D team sends feedback—sometimes frustration—that low residual moisture or an unexpected melting point shift caused a batch issue, we review not only our process controls but take a hard look at our purification techniques. Customers who scale up peptide, nucleoside, or complex heterocycle syntheses find that minor shifts in by-product profiles caused by oxygen ingress, trace catalyst residues, or microcrystalline particle formation can have a disproportionately large effect downstream. By controlling these parameters on our production floor, we prevent costly surprises in partner labs.

    How Our Synthesis Approach Impacts Safety and Sustainability

    Operating as a primary manufacturer, we hold responsibility not just for performance, but safety—of both the workers and our communities. Our process engineers take time to minimize hazardous waste at each stage, improving not just costs but environment and workplace conditions. For example, we optimize solvent choices: greener alternatives and continuous recovery help us cut emissions while maintaining product integrity. In contrast, shortcuts in solvent recovery or storage often create off-odors or unstable samples, which third-party shippers can overlook until arrival. Our team starts by addressing worker handling protocols, ensuring that unloading, measuring, and sampling expose operators to the least risk. Only those facing spill emergencies, or managing reactive cleanups, appreciate the consequences of small improvements here.

    We also consider the final formulation’s stability—how moisture, trace oxidation, or plasticizers in containers affect usable shelf life and content reliability. Our hands-on experience shows there’s no substitute for practical, repeated audits of packaging and storage, particularly for products sensitive to both water and air. Rather than relying on “good enough” shrink-wrap seals, we favor robust multi-layer packaging based on trial, error, and direct field-testing with trusted clients. This mode of operation might seem old-fashioned to some, but the measurable reduction in product loss and field complaints proves its value time and again.

    Comparing Ethyl 2,4-Dihydroxy-6-Methyl-3-Pyridinecarboxylate with Related Pyridinecarboxylates

    Unlike its less substituted counterparts, our product balances reactivity with manageable stability. The methyl group at the 6-position doesn’t just occupy space; it shields the aromatic core and slightly tunes both solubility and reactivity patterns in most lab and production environments. Products like the simpler ethyl 2,4-dihydroxy-3-pyridinecarboxylate (lacking the methyl at 6) display greater tendency to undesired side reactions under basic conditions. Conversely, more heavily alkylated or protected versions, though less reactive, resist further derivatization steps that some customers demand.

    Through direct synthesis and application tests, the value of precise substitution patterns in the pyridine ring emerges. We’ve supported dozens of customers frustrated by product drift or unexplained failures when trying to substitute one pyridinecarboxylate for another, simply because supply lines shifted or datasheets “appeared similar.” Our technical staff has worked shoulder-to-shoulder with these groups, running joint experiments to requalify end processes using our ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate. These partners frequently observe more reliable coupling yields and product recovery—outcomes traceable to exact purity, dryness, and substitution patterns achieved only through direct oversight of every manufacturing and handling stage.

    Supporting Customers Beyond the Order Sheet

    Our experience shaping this compound’s production stretches beyond delivering a product that “matches spec.” We know shipments sometimes encounter temperature swings, accidental light exposure, or prolonged transit delays. To counter these, we’ve invested in both packaging solutions and logistics tracking, working with clients exposed to real-world interruptions. Several international partners faced shipment hold-ups during customs checks, only to discover our drum design and vacuum seals retained compound integrity even after extended periods. For us, this learning shapes new packaging approaches: vacuum liners with moisture scavengers, vapor-barrier outer layers, and QR-coded seal tags. These details matter to our customers’ process reliability—and they matter to us as manufacturers with skin in the game.

    Technical documentation also reflects our deeper engagement. Standard CoAs and MSDS often neglect the quirks uncovered in kilo-scale or pilot-plant production. Regular review meetings with our largest clients generate improvement notes: clear solubility tables in multiple solvents, actual photographic references for expected crystalline form, and batch-specific impurity charts. These documents help production chemists troubleshoot or optimize their own processes, and their feedback circles back to our continuous improvement programs. Our laboratory managers work directly with end-use tech teams, running problem-solving sessions that only make sense among practitioners with hands-on production experience.

    No Substitute for In-House Control

    Not all suppliers can speak to the subtle differences in appearance, odor, granule size, or filterability spawned by different manufacturing approaches. A third-party repacker might pass these along as minor, unavoidable variances; to us, these are process fingerprints. Running our own purification and packing lines means we catch batch deviations at their source and maintain direct accountability. Our chemists do not simply ship a product; they monitor each unit, perform in-line checks, and sign off on every lot. Looking back on years of cultivating supply chains and production methods, we see direct involvement in manufacturing as the foundation for customer trust and technical support—especially in fields like pharmaceuticals and agrochemicals where error tolerance dwindles.

    Long-Term Reliability and Continuous Improvement

    For us, the journey of producing ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate doesn’t end with a shipment confirmation. Clients often return months or years later to analyze archived samples, retest long-stored drums, or revisit a dormant synthesis pathway. Our commitment goes towards providing reliable reference material: sealed samples, historical spectra, and actual documentation of in-plant changes that affected product lots. Meeting regulatory obligations means keeping traceability and audit trails airtight, not just for the latest order but across years of production history. Those aiming for patent filings, regulatory submissions, or product registration in demanding jurisdictions find that long-view documentation proves its worth over and over again.

    Transitioning production lines or updating purification steps happens with full awareness of downstream impact. Before any change rolls out, we run extensive pilot and lab trials, sharing samples with key users and gathering real-world performance feedback. This two-way communication between our production plant and customer facilities allows us to fine-tune not only batch integrity but also handling and application protocols. Improvements in batch reaction kinetics, crystallization rates, or residual solvent profiles stem from this ongoing cycle of client input, process adjustment, and practical testing. This loop sustains the trust many have placed in us for critical compound delivery.

    Challenges We Face—And How We Tackle Them

    Raw material fluctuations present one of the toughest problems. As a primary manufacturer, we sometimes deal with seasonal shortages or shifting purity levels from upstream suppliers. Rather than pass these challenges down the line, our procurement teams actively vet supply chains, set up redundancy for sensitive inputs, and validate alternate sources before use. We take responsibility for this often-unseen aspect of batch reliability because our experience has shown inconsistent inputs propagate through every phase, causing headaches for both us and end-users.

    Another persistent issue involves managing micro-scale but significant impurities. Even low-level trace contaminants can slip through standard purification methods but still alter the product’s performance for certain high-sensitivity applications. We invest in deeper analytics—NMR, LC-MS, and advanced chromatography not just for show, but to root out hard-to-detect deviations. This technical capability results from years of direct feedback from formulation chemists and QC labs encountering “mystery failures.” Because we own the full spectrum of manufacturing, from raw material handling to finished product packaging, we build feedback from advanced QC directly into our routine protocols.

    Spotting small process improvements often delivers major downstream benefits. Simple actions—such as repositioning purification columns, fine-tuning incoming material cleaning, or automating certain filtration steps—may seem mundane but raise the standard. We have learned not to treat any stage as “set and forget.” Each year brings improvements, driven by lessons from lab-scale formulations up to full-scale process validations with international partners. This ongoing scrutiny explains why many long-term clients depend on our batches for regulatory filings and sensitive process development.

    Looking Ahead: Innovations in Manufacturing and Support

    Our future focus involves harnessing new process technologies. Process intensification, greener solvents, single-use technology for select steps, and greater digitization of batch controls have become part of our continuous development program. As regulatory and sustainability requirements grow more demanding, we integrate advanced in-line monitoring, digital batch recording, and closed-loop feedback from both plant and customer labs. These investments flow naturally from genuine experience producing and troubleshooting this compound across many applications.

    Being the manufacturer, we appreciate how direct input from users shaped every facet of our workflow and finished product. Our lab teams remain available to troubleshoot specific technical issues or help optimize tricky process transitions. Transparent collaboration builds confidence, translating daily plant skills into process stability and user satisfaction. We’ve spent years understanding this compound’s chemistry—both on paper and in practice—as a result, our version of ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate meets a high bar of expectation shared by some of the most demanding users worldwide.

    Conclusions Grounded in Manufacturer Experience

    Ethyl 2,4-dihydroxy-6-methyl-3-pyridinecarboxylate is more than a catalog entry—it represents the outcome of persistent practical work, attention to technical details, and a continuing conversation with those who actually use it. An effective manufacturer’s role extends beyond synthesis into stewardship for reliability, traceability, and real-world lab and plant results. Our efforts continue to refine every lot in response to evolving needs, regulatory pressure, and ever-higher expectations from technical partners. Experience shows that a hands-on, detail-driven approach creates not just a product, but solutions that influence downstream success in ways that matter deeply to every serious chemist and process engineer.