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4,6-Dihydroxy-5-Methylpyrimidine

    • Product Name 4,6-Dihydroxy-5-Methylpyrimidine
    • Alias 5-Methyl-2,4-pyrimidinediol
    • Einecs 209-791-1
    • 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
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    Specifications

    HS Code

    511771

    Chemicalname 4,6-Dihydroxy-5-Methylpyrimidine
    Molecularformula C5H6N2O2
    Molarmass 126.11 g/mol
    Casnumber 696-31-1
    Appearance White to off-white crystalline powder
    Meltingpoint 270-272°C
    Solubilityinwater Moderately soluble
    Smiles CC1=C(N=CN=C1O)O
    Inchi InChI=1S/C5H6N2O2/c1-3-2-6-5(9)7-4(3)8/h2,8-9H,1H3,(H2,6,7)
    Pka Approx. 8.7 (for the hydroxyl group)
    Synonyms 5-Methyl-2,4,6-trihydroxypyrimidine (tautomeric), 2,4-Dihydroxy-5-methylpyrimidine
    Pubchemcid 13492

    As an accredited 4,6-Dihydroxy-5-Methylpyrimidine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A sealed amber glass bottle containing 25 grams of 4,6-Dihydroxy-5-Methylpyrimidine, labeled with product details and safety information.
    Shipping 4,6-Dihydroxy-5-Methylpyrimidine is typically shipped in sealed, moisture-proof containers to maintain product integrity. It should be stored and transported at room temperature, away from direct sunlight and incompatible substances. Shipping complies with local regulations for non-hazardous chemicals, and safety data sheets are provided with each shipment for handling guidance.
    Storage 4,6-Dihydroxy-5-methylpyrimidine should be stored in a tightly sealed container, protected from light, moisture, and incompatible substances. Store at room temperature, ideally in a cool, dry, and well-ventilated area. Clearly label the container and keep it away from sources of ignition and strong oxidizing agents. Ensure proper chemical hygiene and use appropriate personal protective equipment when handling.
    Application of 4,6-Dihydroxy-5-Methylpyrimidine

    Applications of 4,6-Dihydroxy-5-Methylpyrimidine in Industrial Manufacturing

    4,6-Dihydroxy-5-Methylpyrimidine serves as an essential intermediate in multiple downstream chemical manufacturing sectors. Our production adheres to stringent industry standards, addressing the distinct needs of each client in specialized chemical value chains. Below, we detail key industrial applications and the specific integration of this compound throughout various established sectors.

    1. Pharmaceutical Intermediates for Pyrimidine-Based Drug Synthesis

    Pharmaceutical manufacturers source 4,6-dihydroxy-5-methylpyrimidine as a crucial pyrimidine core structure for synthesizing active drug ingredients, especially antiviral and anticancer agents. The compound enters targeted reactions such as chlorination, amination, or heterocycle extension to generate complex molecules, which serve as registered intermediates for API pipelines. Manufacturers follow process controls to comply with regulatory submission batches and validation procedures.

    Industry compliance standards

    • USP-NF (United States Pharmacopeia–National Formulary)
    • ICH Q7 GMP guidelines for APIs
    • European Pharmacopoeia (Ph. Eur.) monographs for intermediates
    • Certificate of Suitability (CEP) requirements for European production

    Typical usage ratio

    • 20–40 mol% relative to target pyrimidine skeleton, adjusted according to specific reaction stoichiometry.

    Downstream process integration

    • Introduced at the heterocycle assembly or side-chain modification stage of API synthesis, prior to purification and crystallization.

    Final product types

    • Anti-influenza pharmaceuticals (e.g., triazavirin synthesis)
    • Chemotherapeutic agents in clinical trials or generic production
    • Pyrimidine-based nucleoside analogues for antiviral therapy

    2. Agrochemical Intermediates for Herbicide and Fungicide Actives

    The material provides a structural block for the manufacture of pyrimidine-derived agrochemicals, particularly herbicide and fungicide actives. It undergoes chemical condensation, alkylation, and functional group transformation, enabling precise functionalization for downstream activity. Large-scale plants integrate the compound under controlled batch or continuous protocols to meet formulation requirements for global crop protection markets.

    Industry compliance standards

    • FAO/WHO Joint Meeting on Pesticide Specifications (JMPS)
    • REACH Regulation (EC) No 1907/2006 for chemical safety
    • ISO 9001:2015 for agrochemical manufacturing quality
    • China GB/T 1600–2019 standards for pesticide intermediates

    Typical usage ratio

    • 10–35 wt% in the upstream synthetic pathway depending on the herbicide or fungicide formulation chain.

    Downstream process integration

    • Dosed in the multi-step organic synthesis following initial ring closure, prior to halogenation or further side-chain installation.

    Final product types

    • Selective herbicides (e.g., pyrimidinyl carboxylic acid derivatives)
    • Systemic fungicides containing pyrimidine rings
    • Precursor blocks for new-generation crop protection molecules

    3. Specialty Dye and Pigment Synthesis

    Dye producers use this compound as a key precursor for high-performance specialty dyes, especially where pyrimidine rings impart lightfastness or modified solubility. The material participates in condensation and coupling reactions with aminophenol or azo components. Careful process monitoring preserves color quality and meets performance benchmarks for textile and ink sectors.

    Industry compliance standards

    • ETAD Code of Practice (Ecological and Toxicological Association of Dyes and Organic Pigments Manufacturers)
    • OEKO-TEX® Standard 100 requirements for toxicological profiles
    • ISO 13320:2020 Particle size analysis methods
    • REACH Annex XVII for dye safety restrictions

    Typical usage ratio

    • 5–15 mol% incorporated in the total dye molecule mass, based on the targeted chromophore structure.

    Downstream process integration

    • Added during the chromogenic core assembly step, prior to finishing and granulation for final pigmentation.

    Final product types

    • High-performance textile dyes
    • Special effect printing inks
    • Permanent plastics colorants with UV stability

    4. Fine Chemical Intermediates for Flavor and Fragrance Synthesis

    Flavor and fragrance compound manufacturers implement this pyrimidine derivative in the design of organoleptic molecules, where heterocyclic motifs provide subtle bitter, roasted, or malty notes. Synthesis proceeds through a controlled condensation or alkylation, with strict analytical control at each stage to ensure food safety and compliance with ingredient lists.

    Industry compliance standards

    • FCC (Food Chemicals Codex) purity standards
    • IFRA (International Fragrance Association) code of practice
    • US FDA 21 CFR for food additive safety
    • ISO 9235:2013 for natural and synthetic aromatic raw materials

    Typical usage ratio

    • 0.2–3 wt% in concentrated reaction mixtures, refined according to intensity and sensory requirement of the end product.

    Downstream process integration

    • Introduced at the intermediate aldehyde or ketone modification stage in multi-step aroma synthesis.

    Final product types

    • Artificial maltol or caramel flavorings
    • Complex fragrance blend bases for personal care
    • Specialized flavor compounds listed in FEMA GRAS database

    5. Electronics Chemicals for Photographic and Imaging Compounds

    Photographic and imaging materials producers select this compound for its electron-donating and stabilizing properties in silver halide and organic light-sensitive chemistry. The pyrimidine unit enhances photostability, signal response, and resolution in specialty formulations. Tightly controlled introduction and purification ensure absence of interfering impurities during downstream coating processes.

    Industry compliance standards

    • ISO 18902:2020 for imaging media storage
    • RoHS Directive (EU) 2015/863 for hazardous substances limitation
    • JEITA standards for electronic chemical quality
    • ANSI IT9.2 for photographic imaging chemicals

    Typical usage ratio

    • 1–8 wt% in coated layer or developer solution, as adjusted for photoresponse and layer thickness.

    Downstream process integration

    • Added to the organic co-monomer or sensitizer pool prior to emulsion casting and coating on film or paper substrate.

    Final product types

    • Photographic film base chemicals
    • Digital printing photoinitiators
    • Specialty imaging developer formulations used in electronics and medical diagnostics
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    More Introduction

    4,6-Dihydroxy-5-Methylpyrimidine: Practical Insights into Production, Application, and Industry Realities

    Proven Performance of 4,6-Dihydroxy-5-Methylpyrimidine

    Anyone who has worked with pyrimidine derivatives knows that consistency and purity are the keys to everything from downstream yield to safety in the final application. We manufacture 4,6-dihydroxy-5-methylpyrimidine with a focus on both purity levels and batch-to-batch repeatability. Experience shows that even a small deviation, especially in heterocyclic building blocks, can slow processes or undermine outcomes. In every production run, we monitor parameters like particle size, moisture content, and color—because overlooking basics creates headaches later in synthesis and scale-up.

    Over the years, careful control of raw materials and reaction conditions has helped us meet the strict needs of both research and industrial clients. Analytical data always points to where process drifts may begin, and we correct before it ever affects our customers. The result: chemists working on active ingredients, intermediates, or specialty resins have a reliable supply of high-integrity 4,6-dihydroxy-5-methylpyrimidine, regardless of order size. Standard batch specifications are set at a minimum of 99% purity by HPLC, with any traces of heavy metals and moisture kept below 0.5%. Each lot comes with its own test record, not just a generic spec sheet—this transparency lets formulation teams make decisions without guesswork.

    Applications Backed by Years of Industrial Experience

    The true value of 4,6-dihydroxy-5-methylpyrimidine emerges in the way it fits into multi-step synthesis. Many customers use it to build uracil and cytosine ring systems, as well as specialty bioactive compounds. Historically, we find that the nucleophilic reactivity and ready functionalization of the hydroxy groups at positions 4 and 6 make it a workhorse for scaffolds in pharmaceutical research and fine chemical production. Customers working in dye chemistry also highlight this material, as it provides a straight path to colorant intermediates with very little side reaction—something not always guaranteed if you gamble on a lower-grade supplier.

    In diagnostics and photovoltaics, this compound turns up in the synthesis of sensing agents and novel ligands. Fine-tuned melting point and stability over a range of solvents make a difference for these applications. Our experience with clients operating under GMP conditions also gives us a clear view of just how minor impurities can trigger regulatory headaches. When high-pressure liquid chromatography profiles confirm a single sharp peak, development teams speed up, since they know every gram contributes directly to their end product. In the context of academic research, reliable building blocks like this save hours of troubleshooting.

    Understanding the Chemical: Why It’s Different from Other Pyrimidines

    Plenty of pyrimidine derivatives populate catalogs, but 4,6-dihydroxy-5-methylpyrimidine has earned its place for reasons concrete and practical. Unlike analogues with nitro or halide substituents, the hydroxy group reactivity opens many routes for functionalization by both nucleophilic substitution and condensation. The methyl group at position 5, meanwhile, confers better physical stability and influences ring electron density—critical in certain synthetic schemes. We have compared this compound to similar trihydroxypyrimidines and found handling is considerably smoother; it resists caking and hydrolytic breakdown, even under basic conditions.

    Competitors on the market offer 2,4- or 2,6- disubstituted pyrimidines, but customer feedback repeatedly points to issues ranging from solubility challenges to unpredictable color-forming side products. Experienced chemists soon discover that picking the right compound at this first step saves time, solvent, and even labor costs downstream. This is less about theoretical differences and more about what happens on the bench: in S_NAr reactions, for example, the reactivity profile of our 4,6-dihydroxy derivative often eliminates a purification step, something we learned by listening to the stories of process engineers in the field.

    Consistency and Compliance Drive Performance

    Regulators and customers both weigh in on the compliance landscape for specialty chemicals. Since 4,6-dihydroxy-5-methylpyrimidine is a precursor to active pharmaceutical ingredients and diagnostic agents, each stage of manufacturing must align with quality standards. Our facility follows strict process control routines—raw materials are sourced only from audited vendors, and every critical stage, from crystallization to drying, is documented and monitored. Routinely, third-party labs confirm our results, and these certificates travel with the finished product.

    Long-time clients in Europe, North America, and Asia often ask about residual solvents, heavy metal levels, and batch reproducibility. Based on direct feedback, we invested in improved solvent recycling and stepwise washing. This practice not only pushes down impurity risk, it supports sustainability by reducing waste loads. Our continuous production trials documented a 12% decrease in solvent consumption after switching to tighter process windows for this compound—something both our operations staff and the environment appreciate.

    Physical Qualities That Matter in the Real World

    Material handling can make or break a chemical’s reputation. In practice, 4,6-dihydroxy-5-methylpyrimidine’s free-flowing crystalline powder format proves itself every shipping season. It pours evenly, resists moisture clumping, and stores well at room temperature. Tech teams across several pharmaceutical plants have remarked on the ease of dissolution in a variety of common solvents, particularly DMF, methanol, and DMSO. This helps shorten prep and set-up time on both pilot and production scales.

    During high-humidity months, even minor caking annoyances can snowball into productivity losses. We regularly monitor humidity at each production stage and adjust drying times to keep the product stable in transit and storage. Years of shipping during both summer monsoons and dry winters have taught us that small tweaks, like double-sealing and extra desiccant packs, keep complaints low and customer loyalty high. Regular bulk customers tell us they rarely need to screen or pre-dry our material before using it, and this translates to better throughput in their own facilities.

    Feedback and Continual Process Improvement

    One lesson that comes up in every quality review is that the best ideas flow directly from the factory floor and customer labs. Our technical and sales teams collect suggestions—from packaging size to lot traceability. Several years back, a pharmaceutical contract manufacturer proposed a finer particle cut for better blending. We overhauled our final milling stage and, by introducing a two-step sieving process, reduced fines and improved flow properties. These small improvements came from listening to the users who lift, mix, and test our product every day.

    A dye manufacturer in the US once reported that a minor yellow tint appeared at the tail end of some batches. By tracing back through our process logs, we pinpointed slight over-curing during drying. Adjusting dryer set points not only cleared up the color but gave us a tighter overall melting point range. Now we spot-check these batches using UV-vis and melting point checks before shipment. These stories underscore why close dialogue between manufacturers and the people using the chemistry feels essential—a product as sensitive and versatile as 4,6-dihydroxy-5-methylpyrimidine thrives only when the loop between supplier and user stays active and open.

    Customers sometimes request special documentation, from batch-specific impurity profiles to kosher and halal certification for final product applications. Responding to these needs means our documentation department works in step with production. We also took the initiative to upgrade our tracking systems, so traceability is never an afterthought. These changes didn’t show up in glossy brochures—they revealed themselves in faster audits and confident customer sign-offs. Sometimes, the right paperwork delivered quickly is as valuable as the product itself.

    Environmental Responsibility and Sustainable Manufacturing: Beyond Compliance

    Chemical manufacturers carry a responsibility to both customers and the environment. This comes through in our approach to sustainability for 4,6-dihydroxy-5-methylpyrimidine. Our production site incorporates wastewater recovery units and close-loop solvent recycling. This approach is grounded in both regulatory needs and real operational savings. In practice, switching to less hazardous auxiliary chemicals in the workup and post-treatment has meant lower airborne emissions, better worker safety, and—ultimately—a more reliable product. Any spills or process upsets are flagged and corrected immediately; records get audited both internally and by third parties.

    Our purchasing decisions also reflect these values. Sourcing bulk intermediates from regional suppliers—when feasible—helps to cut transport miles and reduces the exposure risk for long-haul logistics. More than a decade into running these programs, we see that the biggest shift isn’t in glamorous green marketing but in a work culture that expects constant review and upgrade of safety and environmental controls. Each improvement filters back into day-to-day work: operators receive better training, and engineering techs flag bottlenecks in solvent recovery before they turn into problems. This stewardship comes from a real sense of pride in what we do, as much as outside expectations.

    Working with Formulators, Developers, and End Users

    We find that the needs of downstream users evolve continuously. Pharmaceutical partners seek robust regulatory support and impurity profiles. Coating developers focus on color stability and reactivity. Research chemists ask for documentation and small-batch flexibility. Direct communication—emails, phone calls, even factory visits—clarifies these requirements in a way that generic spec sheets cannot. This dynamic feedback loop means the product improves over time, instead of remaining static once a production method is locked in.

    Every year brings new application questions: can the product work in a novel nucleoside chemistry? Will a slightly wider particle cut aid filtration after reaction? Is there benefit to altering the rinsing sequence before final drying? We run pilot-scale trials and share data with customers, not simply to fulfill a request but to gather insight on how 4,6-dihydroxy-5-methylpyrimidine behaves in evolving chemical environments. This process also guards against stagnation, as fresh customer needs nudge technical teams to find smarter ways to run the process.

    Whether customers operate at research quantity or bulk scale, flexibility remains central to dependable partnerships. Lead times, shipment packaging, or secondary quality checks can shift on short notice, especially when regulatory conditions or market forces shift. Over time, mutual respect and practical flexibility make business connections last. Our approach is steady: keep lines of communication open, deliver on commitments, and see each joint project through, no matter where issues arise. If a new shipping requirement or qualification protocol appears, we work with customer QA and logistics teams to resolve it immediately. This is how a material like 4,6-dihydroxy-5-methylpyrimidine moves from specialty to necessity in so many advanced applications.

    Future Considerations: Innovation, Scale-up, and Industry Partnership

    Looking ahead, the chemical industry faces rising pressure on purity, safety, and supply chain reliability. Our commitment to research and process development remains a point of pride in day-to-day work. Developing lower-carbon synthesis methods sits at the front of our R&D activities; chemists review data regularly to fine-tune temperature profiles or identify alternative reagents that may offer better yield or less waste. Over time, small incremental advancements lower costs and raise consistency for everyone using the product.

    Building alliances with academic research groups and industrial partners pays dividends beyond immediate supply contracts. Joint projects led to route optimizations—sometimes as simple as a shift in crystallization solvent, which improved isolation efficiency by up to 9% and trimmed cycle time during large-scale production. Incremental improvements stack up to big gains, and these learnings ripple into practice across multiple chemical families, not just pyrimidine derivatives.

    The global supply environment brings challenges: raw materials, transport, regulatory shifts. Our hands-on approach—thorough vetting of suppliers, real-time inventory monitoring, adaptive logistics—has made a difference in both crisis months and smooth periods. During recent disruptions, advance planning and regular customer updates kept lead times far shorter than industry averages. While technical skills anchor our success, it’s responsiveness, attention to detail, and ongoing learning that shape our role in the specialty chemical supply chain.

    Trust Built on Real-World Performance and Shared Experience

    More than a decade of hands-on production, quality checks, and direct customer collaboration stand behind every shipment of 4,6-dihydroxy-5-methylpyrimidine that leaves our site. We know from first-hand experience that advanced chemistries start with reliable, thoroughly vetted materials. Listening to and learning from partners—whether it’s process engineers in large-scale synthesis or bench scientists in early R&D—has allowed us to shape both process and product to the needs of changing industries.

    Ultimately, the reputation of this compound, and our standing as a producer, rest on a foundation of science, skill, and daily diligence in every run, test, and delivery. We invite feedback, share data, and keep our word—because this builds a product, and a partnership, that stands up to both today’s challenges and tomorrow’s innovations.