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5-Methoxy-2,4-Pyrimidinediol

    • Product Name 5-Methoxy-2,4-Pyrimidinediol
    • Alias 5-Methoxybarbituric acid
    • Einecs 626-57-1
    • 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

    655297

    Iupac Name 5-Methoxy-2,4-pyrimidinediol
    Chemical Formula C5H6N2O3
    Molecular Weight 142.11 g/mol
    Cas Number 20880-92-6
    Appearance White to off-white solid
    Melting Point Approximately 200 °C
    Solubility In Water Soluble
    Pubchem Cid 317369
    Smiles COC1=C(NC(=O)NC1=O)
    Inchi InChI=1S/C5H6N2O3/c1-10-3-2-4(8)7-5(9)6-3/h2H,1H3,(H2,6,7,8,9)
    Storage Conditions Store in a cool, dry place, tightly closed
    Synonyms 5-Methoxy-2,4-dihydroxypyrimidine

    As an accredited 5-Methoxy-2,4-Pyrimidinediol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 25g amber glass bottle labeled “5-Methoxy-2,4-Pyrimidinediol, ≥98%,” featuring hazard symbols and lot number for traceability.
    Shipping 5-Methoxy-2,4-Pyrimidinediol is shipped in tightly sealed, approved containers to prevent moisture and contamination. It is transported as a solid chemical under ambient conditions, following relevant hazardous materials regulations. Package labeling includes substance identification and hazard information, ensuring safe handling during transit and delivery. Suitable precautions are taken to avoid damage and spills.
    Storage 5-Methoxy-2,4-pyrimidinediol 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 away from strong oxidizing agents. Ensure proper labeling and avoid contact with strong acids and bases. Follow standard laboratory chemical storage protocols to maintain stability and safety.
    Application of 5-Methoxy-2,4-Pyrimidinediol

    Applications of 5-Methoxy-2,4-Pyrimidinediol in Industrial Manufacturing

    5-Methoxy-2,4-Pyrimidinediol serves as a specialty intermediate in advanced industrial synthesis. As the original manufacturer, we supply this compound to several sectors that leverage its pyrimidine core for high-value end products. The material supports strict downstream regulations in pharmaceutical, agrochemical, pigment, electronic, and fine chemical industries.

    1. Pharmaceutical Intermediates for Antiviral Synthesis

    Leading pharmaceutical manufacturers utilize 5-Methoxy-2,4-Pyrimidinediol as a core intermediate in the multi-step synthesis of antiviral nucleoside analogs. The compound enters key coupling and modification reactions to build pyrimidine rings required for active pharmaceutical ingredients (APIs). Controlled integration at initial or late synthesis stages ensures traceability and compliance for regulated markets.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • United States Pharmacopeia (USP)
    • European Pharmacopoeia (Ph. Eur.)
    • 21 CFR Part 210/211 (FDA cGMP)

    Typical usage ratio

    • 0.2–0.8 molar equivalents relative to target API backbone; final batch size, purity requirements, and downstream protecting group strategies determine adjustments

    Downstream process integration

    • Entry during heterocyclization or amination stage via direct reaction with halogenated sugar derivatives
    • Selective O-demethylation or N-alkylation following primary condensation
    • Pilot and commercial scale custom synthesis lines employ validated analytical QC

    Final product types

    • Antiviral nucleoside analog APIs (e.g., for influenza or herpesvirus therapies)
    • Pharmaceutical building blocks for prodrug synthesis
    • Intermediates for DNA polymerase inhibitors
    • Contract-manufactured API precursor lots

    2. Agrochemical Active Ingredient Precursor

    Agrochemical producers rely on 5-Methoxy-2,4-Pyrimidinediol to construct key heterocyclic scaffolds for fungicide and herbicide actives. The compound’s methoxy and diol groups allow targeted derivatization to introduce bioactive side chains critical for field performance. Sourcing from a dedicated manufacturer supports traceability from pilot projects to commercial production volumes.

    Industry compliance standards

    • EPA (Environmental Protection Agency) Registration Guidelines (USA)
    • REACH (EU Regulation 1907/2006)
    • ISO 9001:2015 for Quality Management Systems
    • OECD Guidelines for the Testing of Chemicals

    Typical usage ratio

    • 5–15% (w/w) in synthetic transformation step based on desired active loading; adjusted in process optimization for side chain introduction and crop specificity

    Downstream process integration

    • Introduced during initial cyclization or as a reactant in condensation with chloroacetamide or similar intermediates
    • Sequential alkylation, chlorination, or acylation to construct final active core
    • Full trace documentation from raw material through formulated dispersible concentrate

    Final product types

    • Pyrimidine-based fungicides and herbicides
    • Active ingredient technicals for crop protection
    • Formulated suspension concentrates (SCs) and wettable powders (WPs)
    • Integrated co-formulations for resistance management

    3. Specialty Pigment and Dye Intermediate

    Color and dye manufacturers introduce 5-Methoxy-2,4-Pyrimidinediol as a functionalizing agent in the synthesis of high-performance pyrimidine-based pigments. The unique substitution pattern increases light and weather fastness properties of the end pigment structures, supporting applications where color stability is critical in plastics, inks, and coatings.

    Industry compliance standards

    • ISO 787-24:1985 (General methods of testing pigments).
    • REACH (EC Regulation 1907/2006) for chemical safety and notification
    • EN 71-3:2019 (Safety of Toys—Migration of certain elements) for pigments in children’s products
    • DIN EN ISO 9001 for pigment manufacturing QC

    Typical usage ratio

    • 3–12% (w/w) relative to pigment mass, dosed by target shade intensity and substitution efficiency required in final chromophore systems

    Downstream process integration

    • Primary feedstock for cyclization/condensation with aromatic amines or diazo components
    • Engagement in post-synthetic purification for lightfast pigment classes
    • In-process analytical support via HPLC and colorimetric QC

    Final product types

    • Pyrimidine-derived specialty pigments (yellow, orange, red shades)
    • High-purity dyes for technical textiles
    • Automotive and industrial coatings
    • Printing ink masterbatches with extended weather resistance

    4. Electronic Chemical Synthesis (Semiconductor Industry)

    Producers in the microelectronics sector apply 5-Methoxy-2,4-Pyrimidinediol in the synthesis of organic semiconducting materials, especially in research and development of next-generation organic electronics. Its precise structure supports functional group incorporation for molecular design in organic light emitting diodes (OLEDs) and photoresist applications at pilot-scale foundry settings.

    Industry compliance standards

    • RoHS Directive (EU 2011/65/EU) for restriction of hazardous substances
    • IECQ QC 080000: Hazardous Substance Process Management
    • SEMATECH Process Chemistry Standards
    • Internal QA/QC for high-purity electronics chemicals

    Typical usage ratio

    • 0.5–3% (w/w) in specialty monomer input streams, tuned for final oligomer or polymer design based on electronic property requirements

    Downstream process integration

    • Integrated directly at oligomer or monomer coupling stages in organic synthesis workflow
    • Substituent for structure-activity optimization in photoresist or OLED-active materials
    • Advanced in-line purification and particle control for semiconductor quality standards

    Final product types

    • Organic semiconducting materials for OLED layers
    • Electronic photoresists for micro-lithography
    • Test substrates for emerging memory and display applications
    • Functional intermediates for organic photovoltaics
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    Certification & Compliance
    More Introduction

    5-Methoxy-2,4-Pyrimidinediol: A Practical Look from the Manufacturer’s Bench

    Production Values Behind 5-Methoxy-2,4-Pyrimidinediol

    We develop 5-Methoxy-2,4-Pyrimidinediol in batches where accuracy and reliability shape each molecule. In chemical manufacturing, shortcuts show up in inconsistent product quality, especially when suppliers cut corners on purification or process control. Many users in pharmaceuticals and specialty chemicals rely on clean intermediates, craving batch-to-batch consistency. Our approach differs since we draw on years refining handling, crystallization, and analytical verification—practices matured from hundreds of process runs. By staying close to the end application, we've learned to monitor and tweak parameters, especially where purity influences downstream yield. Repeatable results do not come from a press of a button—they depend on a thorough understanding of every process stage, from raw materials to packing. At our plant, 5-Methoxy-2,4-Pyrimidinediol never passes unless it meets tighter internal criteria than general industry guidance demands.

    Why Molecular Integrity Matters

    5-Methoxy-2,4-Pyrimidinediol, with molecular formula C5H6N2O3, often draws attention from those developing advanced pharmaceutical intermediates. Chemists run into real trouble if a product shows up out-of-spec—with contamination or variable melting point. That error can waste weeks or even months on a synthesis, and we have fielded calls from customers forced to scrap projects after sourcing from less careful producers. Over our operating history, we learned that solvent trace removal and controlled crystallization help minimize batch deviations. It never pays to cut back on analytical testing, especially when NMR, HPLC, and mass spectrometry catch issues invisible to the naked eye. Unwelcome impurities haunt the next synthetic step, especially when going towards high-value targets. Staying focused on the integrity of each run, instead of volume alone, serves customers and science both.

    Specifications That Make a Difference

    On paper, specifications for 5-Methoxy-2,4-Pyrimidinediol seem straightforward: high assay, minimal moisture, well-defined melting point, and a clean spectral footprint. Actual manufacturing turns those bullet points into daily checklists. Skilled operators monitor reactors as they run, noting changes in pH, color, or viscosity—little things that signify a process drifting. Our specifications reflect both the needs of academic researchers and commercial formulators. Smaller labs may focus on milligram-scale quality while industry partners often need kilogram-scale uniformity, but each batch follows the same tight controls. We invest heavily in analytical tools—at-line chromatography, automatic moisture analyzers, and continuous melting point tracking. Bringing every delivered pack within these set limits means less troubleshooting for the end-user and more trust for us as the source.

    Real-World Usage: From Lab Bench to Commercial Scale

    5-Methoxy-2,4-Pyrimidinediol rarely stays in storage. Its common role includes serving as a key block in custom molecule synthesis, especially where electron-rich pyrimidines change the reactivity or pharmacology of larger systems. Many customers use it in the search for new drug candidates, where each intermediate must hold its exact structure. Based on feedback and our own R&D, we've seen it unlock significant efficiencies in constructing kinase inhibitors and other bioactive frameworks. Trouble arises if the raw intermediate contains over-alkylated species or residual metals from upstream reagents. These issues sabotage catalytic efficiency in subsequent reactions, turning a single error into a chain reaction of failures. By keeping our product well characterized, researchers avoid repeated purification and wasted resources. The greatest respect we've earned from the synthetic community usually comes after a user tests our compound against a competitor's and sees a substantial difference—not in the spec sheet, but in the lab's daily workflow.

    Comparing 5-Methoxy-2,4-Pyrimidinediol with Similar Chemicals

    Every manufacturer faces questions about what sets their pyrimidinediol apart from others. Commercial alternatives include 2,4-Pyrimidinediol and non-methoxy-substituted pyrimidines. Drawing on plant experience, we see that adding the methoxy group at the 5-position changes not only electronic distribution but also physical characteristics. In process runs, the methoxy variant crystallizes differently, flows better, and dissolves faster in polar aprotic solvents. Chemically, it resists some side reactions plain 2,4-pyrimidinediol cannot tolerate. This subtle shift opens up synthetic routes blocked by other isomers, especially routes needing selective reactivity on the ring. Companies skipping the critical methoxy substitution to save money on raw materials often end up synthesizing intermediates that need extra purification, or yield lower conversion in the next step.

    In our product history, customer complaints about solubility or unplanned byproducts have always tied back to lookalike intermediates where those groups were missing or misplaced. Not all 5-methoxy pyrimidinediol grades are equal, either: the source of methoxy substitution, how side-products clear out, and even how the material gets milled or dried will create practical differences once it hits real lab work. We have observed significant yield loss in partner facilities switching between generic and refined grades. This feedback pushed us to invest in dedicated reactors and post-processing lines that avoid contamination with similar but not identical analogs. Chemical processes reward precision and punish carelessness; we keep our line for 5-Methoxy-2,4-Pyrimidinediol separate from more commonly traded heterocycles, and the payback shows up in cleaner outcomes for our customers.

    Handling, Storage, and Long-Term Stability

    Products that store well matter to both research labs and process engineers, especially when long project cycles delay usage. 5-Methoxy-2,4-Pyrimidinediol, based on our direct storage experience, remains stable when sealed in dry, light-protected containers at moderate temperatures. In our warehouse, we simulate seasonal shifts and monitor humidity—simple steps that avert spoilage or deliquescence. Many batches produced in the last decade held their purity after 24 months in proper containment, which keeps re-testing costs low for our customers.

    Improper storage, on the other hand, creates moisture uptake or degradation. We receive requests from users who struggle to rescue mishandled supplies, and our technical support team often guides them through recovery protocols. Best practices developed from annual stability studies prove their value in less waste, more useful shelf life, and fewer late-stage project delays. For sensitive or high-purity uses, we even supply smaller, inert-gas-packed bottles, reducing atmosphere exposure from repeated openings. This “close-to-use” packaging innovation came from customer-led joint development, showing that industry feedback builds lasting improvements in lab logistics and safety.

    Improving Production and Continuous Feedback

    Manufacturing chemical building blocks demands continual learning. Decades at the plant have shown that every passed batch builds more than inventory; it deepens our understanding. Stream refinement never ends—each campaign reveals some new technical wrinkle. Solvent choices shift, temperatures drift, and analytical standards evolve. Listening closely—whether to our operators, a process chemist in a customer’s plant, or a partner’s contract research team—lets us adapt and improve.

    No system survives without robust, open reporting, and we encourage not only our own staff but also customers to point out where things fall short. This constructive criticism shaped the latest upgrades in our purification sequence, reducing environmental impact and cutting grammage losses. We have also opened up transparency in traceability, giving customers real-time batch data and quality trace records. Sharing this information, rather than sealing it in internal files, has become core to how we build trust in the product’s value. More than once, a flagged deviation in process monitored via real-time data let us catch and correct early-stage errors before they became problematic for end-users. Aggregating this practical intelligence takes continuous effort, but the returns—more reliable chemistry, less troubleshooting, clearer operational risk—benefit everyone working with 5-Methoxy-2,4-Pyrimidinediol.

    Environmental Responsibility and Workplace Safety

    We operate chemical reactors, not spreadsheets, so safety becomes more than just a compliance box to check. Before starting any run of 5-Methoxy-2,4-Pyrimidinediol, each part of the sequence runs through a thorough hazard assessment covering dust control, temperature exotherms, and waste stream management. Years back, a poorly ventilated crystallization bay in a competitor’s plant led to solvent exposure incidents—it's now standard industry wisdom to avoid similar shortcuts. Our investment in advanced air handling, solvent recovery, and secondary containment reduces not just visible emissions but also background risks for every shift on site.

    Eco-compliance doesn’t just save fines; it makes good operational sense. Reusing extracted solvents and reprocessing off-spec product means less environmental discharge and lower raw material costs. In our experience, external audits and rigorous self-inspections drive safer, cleaner equipment. No matter the margin pressure or urgency of a shipment, chemical plants earn their reputation by keeping both workers and neighbors safe. Our continuous training and environmental upgrades keep 5-Methoxy-2,4-Pyrimidinediol production at the right intersection of efficiency, safety, and stewardship.

    Bridging Research with Industry: Collaborations and End-Uses

    Our plant thrives as a hub that links academic exploration with the realities of scale. Recently, we’ve collaborated with biotech startups testing 5-Methoxy-2,4-Pyrimidinediol in targeted nucleoside analogs, where each minor impurity can derail an advanced screen. We have also joined global pharma teams using our compound as a starting point for kinase inhibitors, direct-acting antivirals, and DNA polymerase studies. These partnerships build two-way trust: customers share insight about real challenges, while our team adapts batch protocols to better fit experimental need.

    The difference between success and failure in these efforts often tracks back to product reliability. Several cases involved customers reporting new side reactions emerging from poorly processed batches bought elsewhere—lessons which led us to tweak our own purification and detection toolkit. Most notably, our tailored particle sizing and high-purity isolations eliminated troubleshooting cycles for scale-up teams who sought larger volumes. Each successful project strengthens industry ties, fosters technical innovation, and inspires us to push for sharper, smarter production methods.

    Quality Control and Global Standards

    Experience with worldwide export has shown that regulatory climates can differ but core values don’t. Countries running advanced biotech or pharmaceutical platforms require full documentation, up-to-date certifications, and clear batch-level data. Our systems tie final CofA data directly to the associated sample, preserving every incremental change for compliance and recall purposes. Meeting ICH, USP, and local GMP guidelines contributes more than paperwork; it embeds accountability in the process. Site inspections, both from external authorities and company audits, reinforce this discipline.

    No substitute exists for actual, in-process quality control. We maintain check logs at inlet and outlet points, storing not just endpoint data but also reaction time profiles and intermediate purity. This fine-grained tracking means that, during investigations, each issue can trace back to root cause without delay. Customers needing assurance over every parameter—purity, residual solvents, particle size—find confidence in process transparency. As regulations continue to sharpen, we keep pace by dedicating resources to documentation, training, and review. In a market filled with trading firms offering generic grades without pedigree, operating as the actual manufacturer draws a clear distinction in reliability and traceability.

    End-User Feedback and Broadening Application Horizons

    Our story with 5-Methoxy-2,4-Pyrimidinediol is shaped by more than technical bullet points. Over time, customers have shared stories of both triumphs and setbacks. A drug discovery team once solved a stubborn reaction pathway by switching from a competitor’s grade to our cleaner, more uniformly milled material, saving months. Analytical chemists have told us our tight control over side products unlocked patentable analogs. Conversely, we’ve worked late nights over the phone with teams facing odd results or anomalous data, tracing problems back to storage errors or unintended cross-contamination at their sites.

    Each relationship deepens our process. One academic group highlighted X-ray crystallography findings that showed trace levels of ring-opened impurity only visible with their equipment. Others have run extensive side-by-side evaluations of our shipment versus several global sources, finding higher yields, fewer unknowns on NMR, and better reproducibility—real-world benefits that move from the factory floor to laboratory notebooks. These lessons drive our ongoing improvements, reshape our raw material checklist, and confirm which upgrades matter most to those on the discovery front lines.

    Looking Forward: Commitment to Reliable Value

    Supplying 5-Methoxy-2,4-Pyrimidinediol is more than a commodity exercise for us. It ties together decades of practical chemical experience, advancing feedback from some of the world’s most innovative researchers and industrial partners. As manufacturing science evolves, we adapt—implementing cleaner technologies, tighter quality controls, and open customer engagement. Through every batch and every feedback call, our responsibility to precision, consistency, and safety stays constant. Choosing manufacturer-direct supply ensures not only quality but also shared problem solving, faster troubleshooting, and genuine innovation. For new projects or scale-ups needing dependability, this compound delivers its worth time and again—not as an isolated chemical, but as a tested tool built on real-world expertise.