5-Fluoro-2(1H)-pyrimidinone

    • Product Name: 5-Fluoro-2(1H)-pyrimidinone
    • Chemical Name (IUPAC): 5-fluoro-1H-pyrimidin-2-one
    • CAS No.: 1553-66-2
    • Chemical Formula: C4H3FN2O
    • 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

    541687

    Chemical Name 5-Fluoro-2(1H)-pyrimidinone
    Cas Number 4132-31-0
    Molecular Formula C4H3FN2O
    Molecular Weight 114.08
    Appearance White to off-white solid
    Melting Point 206-208°C
    Solubility Slightly soluble in water
    Smiles C1=C(C=NC(=O)N1)F
    Inchi InChI=1S/C4H3FN2O/c5-3-1-2-6-4(8)7-3/h1-2H,(H2,6,7,8)
    Pubchem Cid 31608
    Iupac Name 5-fluoro-1H-pyrimidin-2-one
    Pka 7.32 (predicted)
    Synonyms 5-Fluoropyrimidin-2(1H)-one

    As an accredited 5-Fluoro-2(1H)-pyrimidinone 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 with a screw cap, labeled “5-Fluoro-2(1H)-pyrimidinone, ≥98%,” includes safety and handling information.
    Container Loading (20′ FCL) 20' FCL: Packs 5-Fluoro-2(1H)-pyrimidinone in 25 kg drums or cartons, totaling about 8–10 metric tons per container.
    Shipping 5-Fluoro-2(1H)-pyrimidinone is shipped in tightly sealed, labeled containers compliant with chemical transport regulations. It is protected from light, moisture, and extreme temperatures. All packages include safety data sheets and required hazard labeling. Handling and shipping follow international and local guidelines for laboratory chemicals to ensure safe transit and delivery.
    Storage **5-Fluoro-2(1H)-pyrimidinone** should be stored in a tightly sealed container, protected from light, moisture, and incompatible materials. Keep it in a cool, dry, and well-ventilated area, ideally at 2–8°C (refrigerator). Avoid exposure to heat, flames, or strong oxidizers. Always store according to the manufacturer's recommendations and follow standard laboratory chemical safety protocols.
    Shelf Life 5-Fluoro-2(1H)-pyrimidinone typically has a shelf life of 2 years when stored in a cool, dry, and dark place.
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    Certification & Compliance
    More Introduction

    5-Fluoro-2(1H)-pyrimidinone: Focused Utility from Our Factory to Your Facility

    Pushing Forward with Quality—Our Direct Approach to 5-Fluoro-2(1H)-pyrimidinone

    Our manufacturing team has spent over a decade refining the synthesis and purification of 5-Fluoro-2(1H)-pyrimidinone. The end result comes from a balance between hands-on process understanding and practical feedback from research labs and pharmaceutical firms. We approach this compound with the mindset that behind every reaction or formulation in a customer’s pipeline, precise material quality directly shapes outcomes. Our plant runs modern batch reactors configured for precise control of temperature and stoichiometry. Our QC lab regularly screens for moisture, metal residues, and both related and unrelated impurities outside the obvious HPLC main peak. We supply customers with material that gives predictable, repeatable performance across multiple applications.

    Model and Specifications

    We manufacture 5-Fluoro-2(1H)-pyrimidinone and offer it under model designation 5F2PYR-01, with routine lots ranging from 100 g to 10 kg. Each batch leaves our site accompanied by a detailed batch-specific certificate of analysis. We guarantee assay values upwards of 98%, water content below 0.5%, and a color that stays within a narrow off-white spectrum. Purity isn’t only about the absence of contaminants; it’s about understanding the molecule’s stability profile. Our storage advice draws on actual warehouse observations—keep it cool, dry, typically under inert gas if long shelf times are expected—to stop hydrolysis and yellowing.

    Each gram that comes through production undergoes process controls built on the lesson that yield and purity influence each tiny decision in the reactor hall. Trace metals are kept low by using carefully sourced raw materials. Fluorination is tightly managed—incorrect conditions lead to either lower conversion or excessive byproducts that make purification a headache. Every COA documents key impurity peaks and matches the reference spectrum picked from multi-year comparative studies in our R&D wing.

    Intended Use Cases and Downstream Advantages

    Research chemists have found 5-Fluoro-2(1H)-pyrimidinone useful as a building block for fluorinated nucleotides, enabling tighter control during the synthesis of anti-viral agents and oncology compounds. Some customers focus on medicinal chemistry, screening for improved analogs that show metabolic stability in pre-clinical screens. We know from feedback that our material dissolves readily in most protic and aprotic solvents, letting scientists tune their reactions rather than fight solubility bottlenecks. Repeat buyers often mention that our batches run clean down the column during purification—a sign that upstream process work at our plant is paying off downstream in fewer purification cycles and higher yields per run.

    Those working on nucleoside analog synthesis appreciate that our 5-Fluoro-2(1H)-pyrimidinone resists decomposition during standard protection and derivatization steps. We track this by subjecting our standard material to a battery of stress tests—acid, base, oxidation, and reduction—so the certificate we sign reflects more than just a snapshot purity. It’s a measure rooted in actual bench chemistry, not just numbers on a printout.

    Diagnostic kit developers and academic labs tackling nucleic acid hybridization work trust this compound as a control or spike-in standard—precision in its structure, with minimal assay-to-assay drift. Chromatographers working in agricultural chemistry apply it as a reference standard for residue analysis, where exact mass and retention performance dictate separation specificity. We supply authenticated spectra and comparison reports on request.

    Why Our Formulation and Handling Matter

    Many in the synthetic chemistry community have commented on the challenge of fluorinated heterocycles: instability, quick degradation, and frustrating variability from supplier to supplier. Our batch records show that careful control of temperature and reaction time leads to far less tarring, improved filtration, and decreases in byproduct formation, notably avoiding high levels of difluorinated or ring-opened species. Our plant team tracks impurities by LC-MS and shares this information openly so chemists can plan purification steps or assign structure with certainty.

    We don't leave stability to chance. After years of running both small and large lots, our packaging evolved: amber glass at the minimum, nitrogen flushing for lots above 500 g. This wisdom owes to real customer experiences—early on, open warehouse storage led to quick yellowing after two weeks at ambient humidity, forcing us to trial new barriers until shelf stability passed six months without visible change or new impurity formation.

    Feedback from process chemists also drove us to standardize our particle size bands. A fine, flowable powder improves measure-and-weigh steps, minimizes static cling—beneficial for kilo-lab scaling and pilot plant operators using large-scale equipment. Batch-to-batch reproducibility matters, especially for automated dose and feed systems. These changes didn't come from a regulatory checklist—they arose from genuine bottlenecks during scale-up work, where stoppages cost both time and money.

    Performance Difference: Ours Versus the Market

    Some producers offer 5-Fluoro-2(1H)-pyrimidinone as a generalized, bulk material, blended from variable origins and sometimes marked by vendor-to-vendor drift in impurity profiles. Our synthesis pathway avoids common biological and inorganic impurities noted in competitors’ materials, including persistent chloride levels left by common halogenation route shortcuts. By setting up our own halogen-exchange protocol and purifying through multi-stage crystallization, we eliminate off-notes that even skilled NMR analysts spot in less-refined samples.

    Our team documents and investigates even low-level unknowns. Regular LC-MS cross-comparison between lots leads to empirical records, forming a reference database that allows for swift root cause identification when outliers pop up. This sort of transparency isn’t common—yet many customers return to us for this exact reason. It’s the same logic that led us to tweak filtration steps rather than accept minor haze, and to invest in additional drying stages until the weight loss-by-heating fell well under half a percent.

    We recognize that, compared to similar pyrimidinone derivatives lacking fluorination, our version opens up new possibilities in C-H activation chemistry, expanded cross-coupling, and nucleoside analog R&D. The fluorine atom shifts both electronic and regiochemical properties in a way customers can measure in their final outcomes—improved metabolic half-life in pharma leads, cleaner transitions in chromatographic assays, easier post-reaction modification in synthetic intermediates. Our direct production experience offers assurance that every lot stands true to specification—not only by decomposition profile or storage time, but in total chemical behavior.

    Scale-up Insights and Problem-Solving

    Scaling beyond the bench introduces fresh challenges for 5-Fluoro-2(1H)-pyrimidinone. What passes for a solution in a glass vial turns into an obstacle in reactor-scale runs—a truth our in-house process team faced firsthand. Stirring, temperature ramps, and filtration needed recalibration after witnessing poor phase separations and solid cake binding during our initial multi-kilo campaigns. We adjusted process aids, control cycles, and even order of reagent additions until the output matched the lab’s original quality, then documented the lot-specific adjustments for consistency.

    We share this know-how openly with our customers. Once a pharma client hit an unplanned impurity when scaling up for ingredient manufacture. Our team helped track its origin to minor changes in agitation speed, not in formulation itself—together we solved it and established batch recipes that now line their plant folders. Large-scale users send samples back to us for cross-comparison, and we’ve developed routine rapid turn-around impurity screens so downstream users are supported if outliers pop up.

    Through year-round feedback and joint projects with universities and process R&D chemists, we’ve honed the reliability of each lot. We swapped old-style, labor-intensive purifications for energy-efficient alternatives only after long-term head-to-head shelf testing confirmed no new instability threats emerged in the stored compound.

    Environmental Responsibility from First Step to Final Shipped Drum

    Making fluorinated heterocycles safely and sustainably carries real-world implications beyond just batch chemistry. Our plant engineers use closed-loop solvent recovery to trim emissions and manage the use of halogenated solvents, which can be tougher to dispose of responsibly. Our reactor design and on-site EHS team target low-waste synthesis routes with recoverable reagents. We filter and neutralize residuals onsite before sending anything off-site, and our annual audits show consistent reductions in hazardous discharge compared to industry averages.

    Our purchasing department sources raw materials from suppliers with documented regulatory compliance. Incoming lots are sampled for residues and microimpurities before release to synthesis. We routinely consult with downstream customers on waste minimization strategies, including recommendations for smaller lot purchases and coordinated shipment windows. These direct actions help both sides meet greener targets—a topic that comes up constantly as global standards tighten around specialty chemicals production.

    Maintaining Regulatory Readiness and Industry Trust

    Pharmaceutical and diagnostic customers face increasing compliance and documentation requirements for every substance flowing through their systems. Our documentation starts at synthesis and runs through to batch release: spectra, stability history, purity tables, and full disclosure of detected trace residues. We archive all COAs, spectra, and analytical notes, so that whether it’s a small academic order or a multinational scale-up, every buyer gets full transparency.

    Where required by project, we provide additional granularity—delta-volume certs for raw material inputs, impurity carry-over analysis by tandem LC-MS, and regular external lab confirmation of key batch results. Our regulatory staff keep up with new compliance publications, allowing us to adapt before new flags can threaten continuity of supply. When novel impurities or compliance trends emerge in the literature, we use our pilot lab to replicate and trace root causes, making improvements before market or regulatory authorities demand proof.

    We put honest communication ahead of sales volume. Where a customer’s end-use or application falls outside known safety testing, we say so plainly and recommend suitable alternatives, rather than risk an unknown transfer of liability or performance. This builds trust and lasting cooperation—elements that matter more than quick transactional wins for us as the manufacturer.

    A Community of Knowledge Sharers: Supporting Chemists and Process Teams

    Years of direct interaction with chemists at the bench, engineers at the plant level, and analysts at QA stations shape our company’s internal knowledge base. The requests that come in daily—alternate solvent compatibility, guidance on reactivity patterns, post-reaction handling—inform our product support and even trigger R&D improvement projects. We’ve logged solvent compatibility data, impurity stabilities, and reaction profiles in a form that’s available to buyers. Our team responds in plain language—no jargon—so that users at any experience level can troubleshoot or optimize quickly.

    Customer feedback goes to the heart of product development, not just complaints but the many “did you know” tips that roll in from researchers finding edge-cases or novel reactions. These become part of our cumulative improvement plan. In this way, knowledge generated on our factory floor travels back out to others working to solve new problems, ensuring our approach to 5-Fluoro-2(1H)-pyrimidinone stands out among producers for its openness and measured adaptability.

    5-Fluoro-2(1H)-pyrimidinone in the Broader Chemical Landscape

    Supply chain stability for advanced intermediates like this one matters more than ever, as global disruptions highlight the risk of sourcing from fragmented supply chains. Operating our own reactors, warehouses, and labs gives us the kind of control that distributors and traders can’t claim: real-time response to raw material shortages, batch-dating and recall capability, a practical sense of where delays may arise, and the freedom to innovate processes with no outside approval cycles.

    Working directly with research and manufacturing customers, we see first-hand how quickly experimental results cascade into demand for full-lot deliveries. We run flexible production scheduling—balancing reserve stockpiles with on-demand increases in output—to avoid common market pitfalls like unplanned stock-outs or long supply gaps. By cutting out layers of third-party handling, we offer both cost savings and better risk management.

    Meeting Tomorrow’s Needs Today

    The chemical world moves fast, but consistency and transparency don’t go out of date. Our direct manufacturing experience with 5-Fluoro-2(1H)-pyrimidinone shapes every part of how we serve today’s research and process teams. Our material supports advanced molecule construction in pharmaceuticals and diagnostics, and it delivers rock-solid reliability to chemists pushing the boundaries on new methods. Whether it’s batch stability, purity, or regulatory confidence, our plant’s expertise and open-door approach keep us at the leading edge—solving today’s puzzles, ready for tomorrow’s breakthroughs.