2(1H)-pyrimidinone, 5-methyl-

    • Product Name: 2(1H)-pyrimidinone, 5-methyl-
    • Chemical Name (IUPAC): 5-methyl-1,2-dihydropyrimidin-2-one
    • CAS No.: 91-24-5
    • Chemical Formula: C5H6N2O
    • 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.
    • CONTACT NOW
    Specifications

    HS Code

    715436

    Iupac Name 5-methylpyrimidin-2(1H)-one
    Molecular Formula C5H6N2O
    Molar Mass 110.12 g/mol
    Cas Number 1627-76-1
    Appearance White to off-white crystalline solid
    Melting Point 295-298 °C (decomposes)
    Solubility In Water Slightly soluble
    Density 1.23 g/cm³ (at 25 °C, estimated)
    Smiles CC1=CN=CNC1=O
    Inchi InChI=1S/C5H6N2O/c1-4-2-6-5(8)7-3-4/h2-3H,1H3,(H2,6,7,8)
    Pubchem Cid 13369

    As an accredited 2(1H)-pyrimidinone, 5-methyl- factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 100-gram amber glass bottle labeled "2(1H)-Pyrimidinone, 5-methyl-" features hazard symbols, batch number, and safety instructions.
    Container Loading (20′ FCL) 20′ FCL loaded with securely packed drums of 2(1H)-pyrimidinone, 5-methyl-, ensuring safe, efficient chemical transport.
    Shipping 2(1H)-Pyrimidinone, 5-methyl- is shipped in tightly sealed containers designed to prevent moisture ingress and contamination. It is typically transported as a solid under ambient conditions. Appropriate labeling and documentation are included in compliance with safety regulations. Handle with standard laboratory precautions to avoid exposure during transit and storage.
    Storage 2(1H)-Pyrimidinone, 5-methyl- should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers. Keep the substance out of direct sunlight and protect it from moisture. Store at room temperature and label the container clearly. Follow standard safety protocols for handling chemicals in a laboratory setting.
    Shelf Life 2(1H)-Pyrimidinone, 5-methyl- has a typical shelf life of 24 months when stored in cool, dry, tightly sealed conditions.
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    Certification & Compliance
    More Introduction

    Introducing 2(1H)-Pyrimidinone, 5-Methyl-: Experience, Application, and Value from the Factory Floor

    Building Trust with 2(1H)-Pyrimidinone, 5-Methyl-

    At our manufacturing facility, we handle 2(1H)-pyrimidinone, 5-methyl-, every day. This compound, recognized in most laboratories and R&D centers by its CAS number 1121-27-9, stands on its own among pyrimidinone derivatives thanks to its methyl group at the 5-position. Over years of consistent batch production and quality control, we’ve seen this small molecule provide foundational input for everything from pharmaceutical intermediates to fine chemical synthesis points.

    Direct Manufacturing Brings Real-World Knowledge

    Chemistry on paper takes shape in our reactors and blending vessels. In our hands, 2(1H)-pyrimidinone, 5-methyl- (often called 5-methyluracil in research circles) moves through the line in the form our customers expect: clean, stable, well-characterized powder, well below moisture threshold. Each step from raw input to finished drum draws on the kind of technical oversight that only hands-on production brings, which separates pure manufacturers from labs or resellers who only see the sample sheets.

    Specifications: What We See and Test Every Batch

    The product leaves our factory after tight testing: 98-99% purity by HPLC, low water by Karl Fischer, controlled particle size gauged during processing. Each lot sports a faint creamy-white color and the slightly bitter odor common to the uracil series, which lets experienced chemists recognize it by sight or smell well before instruments run. Impurities, traced back to side reactions, never go above 1-2%—and usually land much lower. Our analytical team checks each drum for trace metals, solvent residues, and ensures results land within pharmacopoeia tolerances if you plan follow-on downstream synthesis.

    Each metric we set started from process hiccups—a kettle that ran too hot and triggered side products, a lumpy batch that betrayed incomplete drying, or a drum that picked up traces of packaging material. Those days shaped our current controls. Instead of just reading numbers from sheets, our staff can walk you through every decision behind every specification.

    What Sets This Product Apart from Other Pyrimidinones

    Chemical buyers face a landscape flooded with pyrimidinone derivatives. In our experience, 2(1H)-pyrimidinone, 5-methyl- offers unique value, especially in pharmaceutical and agrochemical work. The key difference comes down to reactivity. The methyl group at position five influences both how the molecule participates in ring-opening and ring-closing reactions, and how it shuttles through coupling or substitution protocols.

    Similar compounds like unsubstituted pyrimidinone don’t give you the same synthetic flexibility—chemical handles in key positions change rates for C–N and C–C bond formation, and create cleaner selectivity profiles during screening. Higher methylated versions, for example, walk the fine line into unwanted byproducts, lowering yield or requiring an extra purification stage. Labs that accidentally swap a 5-methyl- for an unsubstituted or an alkyl group elsewhere can see batch yields drop off quickly, sometimes in ways that only show up downstream. Our chemists caught this early and focused production controls to avoid wrong isomer contamination.

    Real Usage: How Chemists Have Used Our Material

    Pharma teams often draw from our 2(1H)-pyrimidinone, 5-methyl- as a core ring for nucleoside synthesis. Because it forms a foundation for several nucleobase analogues, any impurities can ripple out, making selectivity and stability crucial during upstream conversion. We watched a mid-sized pharmaceutical client run three parallel routes in their process lab; material from us gave a 15% higher step yield before their glycosylation phase compared to two competing sources. They traced it back to the way our methylated uracil handles the heating profile in their reactor—a small particle size, high purity, and consistent hygroscopicity that cut down on rework time.

    Over on the agro side, formulators often use this building block to create new crop science solutions. Regulatory testing needs full traceability down to starting material, so we keep all production parameters logged for full transparent auditing. When an experimental herbicide candidate failed mass spec, one downstream lab narrowed the problem to trace levels of ethanol residue; their method flagged the wrong bottle from another supplier. We pride ourselves on never running similar levels above the method’s detection limit, so incoming batches won’t derail costly multi-step projects.

    Bridging the Gap between Manufacturing and Laboratory Needs

    We have watched suppliers come and go, and many shortcut the hard work needed to keep quality steady. Most intermediate manufacturers never see their products through real synthetic usage—they load out tankers or drums and never revisit things unless a major client complains about yield. Here in our shop, customer feedback shapes batch instructions. Our team keeps every certificate, every chromatogram, and can walk any user through spectroscopic details rather than just dumping numbers.

    Every year brings a handful of new requests—particle size tweaks, demand for different moisture specs, or new impurity cutoffs based on evolving end-use requirements. One research group recently asked for sub-100 micron sizing to improve solubility in their screening system; we ran test batches and supplied side-by-side samples, letting them dial in the batch they needed most. During one winter, with atmospheric humidity above average, we installed extra drying capacity to prevent caking during packaging, a last-mile fix after listening to end user stories.

    Process Controls: Ensuring Consistency in Every Drum

    Many resellers won’t know which solvent system or temperature range delivers the sharpest crystallization for 2(1H)-pyrimidinone, 5-methyl-. We found through years of batch failures and iterative improvement that subtle tweaks—slower cooling phases, pH drift control, and staged filtration—improve both material stability and flowability after drying. Watching a batch seize up or turn sticky taught us to favor low-clumping protocols. Now, stable microcrystalline batches leave our floor, suitable even for tight-feed dosing lines.

    Small operational changes—like jacketed reactor insulation upgrades, nitrogen drying flushes, and lid gasket swaps—don't make their way to safety data sheets, but they push our output above commodity standard. Every process tweak reduces lot-to-lot variability and gives R&D teams sharper analytical signals. Unlike re-bulkers or third-party handlers, we control each critical metric, from starting acid to final micronization, closing the loop on process and product.

    Safety on the Production Line Shapes Product Consistency

    Most customers rarely see the safety precautions woven into chemical process design. Direct handling of 2(1H)-pyrimidinone, 5-methyl- showed us skin and airway protection is a must. Staff work in half-face respirators and gloves whenever transferring product, since fine dusting can irritate mucous membranes if exposed over long shifts. Some competitors downplay this, passing risk to later stages. Our on-floor safety controls quietly translate into purer, drier product—avoiding cross-contamination or moisture uptake that can cascade through sensitive later processes.

    Material that absorbs environmental odors or moisture during packaging can ruin sophisticated syntheses. Cleanroom-style staging for final packaging, rigorous drum monitoring, and regular plant air quality tests give our customers maximum control downstream—whether they’re pipetting milligrams in discovery work or scaling up for pilot runs.

    Lessons from the Shop Floor: What Matters Most to End Users

    We keep close contact with process chemists and R&D formulators. Requests come in shaped by real process needs, not just spec sheets. One team needed guaranteed absence of a specific aldehyde after their own downstream reaction took an unexpected oxidative turn. We tracked the possible source to a vessel cleaning agent, then switched protocols, adjusting washdown routines on our own time rather than push blame elsewhere. Their next batch ran clean, supporting a streamlined regulatory submission.

    Some users measure success in spectral purity—single peaks, clean baselines, low background signals. Others want robust, easy-to-handle powder that doesn’t cake inside feed hoppers, even in humid summer weather. Our hands-on adjustments bring both properties into alignment, guided not just by paper specs but by practical results and open channels of communication.

    Sustainability and Process Improvements: Looking Ahead

    As global chemical regulations shift and green chemistry wins more support, we track every solvent, waste stream, and emission point with updated documentation. Our 2(1H)-pyrimidinone, 5-methyl- process now runs on reduced-sulfur reagents, minimizing hazardous waste. Effluent from each production round passes on-site treatment before discharge, lowering our environmental impact. Process audits review not just cost or time, but energy demands—each improvement threads a needle between operational efficiency and responsible footprint.

    Investments in energy recovery and advanced condensation let us recycle heat and capture solvents for later runs. We coordinate with downstream users seeking green-label certification, bridging the gap between industrial bulk and research compliance. During scale-up to multi-ton level, we locked in key utilities of scale—optimized mixing impellers, larger yet gentler filtration beds, and digital process monitoring to flag out-of-spec trends before defects enter the value chain.

    Collaboration with Innovators: Supporting Emerging Fields

    Fields like personalized medicine and agricultural biotech push demand for tailored synthesis, precision starting points, and non-standard isomer or particle profiles. We worked with an agricultural research consortium to tighten haloalkyl impurity controls at sub-ppm levels for a new herbicide scaffold. Instead of simple batch release, we built custom analytical methods, extending runtime and developing side-channel reporting so that trace contaminants got flagged. The final product gave consistent, superior results across all stages of their screening, thanks to practical cooperation between the factory and final-user labs.

    Early-stage projects appreciate the versatility of 2(1H)-pyrimidinone, 5-methyl-, which serves as a point of departure for both nucleic acid analogues and selective crop-protective agents. Quick, honest feedback cycles let us chase down issues in synthesis, drying, or blending. Our commitment to teamwork in product development means chemists remain in the loop, save money in scale-up, and avoid pitfalls that haunt less-supported launches. These partnerships foster innovation, strengthening the sector’s ability to address global health and food security challenges.

    Handling and Storage Insights from a Real Production Environment

    Many users overlook final storage factors for 2(1H)-pyrimidinone, 5-methyl-. Batches store best at room temperature, away from light and excess humidity. After trials that saw caking in non-coated containers, we shifted to sealed, lined drums that maintain integrity through long transit or warehouse delays. Against shifting industrial schedules, solid stability and predictable resupply schedules matter more than ever.

    Our operators monitor warehouse climate, correcting for regional temperature swings and investing in dehumidification where needed. Poor storage after dispatch can compromise even the cleanest product, so our logistics team tracks and logs every drum until customer receipt confirmation. Partnering with trusted carriers and using tamper-tagged seals, we guarantee that our batches arrive as packed, preserving the performance that left the fill line.

    Continuous Improvement: Learning from Everything

    No product journey finishes at the loading dock. Each delivery, feedback session, or unexpected result in a client’s hands returns to our process development panel. Over time, we’ve fine-tuned every parameter—grinding, blending, sieving, packaging—always responding to the lessons the market, and our customers, send back.

    Direct manufacturing experience teaches us to value the details: the feel of microcrystalline powder in the hand, the way certain impurities signal process drift, and the dry, even pour from a properly prepared batch. All these details signal our ongoing commitment to 2(1H)-pyrimidinone, 5-methyl- production, focused squarely on practical end-use, traceable quality, and reliable partnership for every customer, from routine bulk to the cutting-edge of research.

    Listening, Supplying, Improving—From Factory to Final Application

    We remain transparent about the realities of our work, sharing and acting on every lesson learned. Chemical manufacturing grows more complex by the year, but the foundation remains rooted in hands-on experience, trust, and technical honesty. Our 2(1H)-pyrimidinone, 5-methyl- leaves the line ready for the next step in your lab, plant, or pilot run. We combine respect for established science with a willingness to innovate, building success batch by batch, day by day, alongside the world’s leading chemists and researchers.