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2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One

    • Product Name 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One
    • Einecs 629-022-4
    • 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

    780225

    Iupac Name 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one
    Molecular Formula C7H6N2O2
    Molecular Weight 150.14 g/mol
    Cas Number 139-20-0
    Appearance White to off-white crystalline powder
    Melting Point 185-190°C
    Solubility In Water Slightly soluble
    Pubchem Cid 23394
    Smiles C1C(=O)NC2=CC=CC=N12
    Inchi InChI=1S/C7H6N2O2/c10-7-5-3-1-2-4-8-6(5)11-7/h1-4H,8H2
    Storage Temperature Store at room temperature
    Synonyms 2H-pyrido[3,2-b][1,4]oxazin-3-one

    As an accredited 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle, 25 grams, with tamper-evident screw cap; labeled with chemical name, hazard pictograms, and handling instructions.
    Shipping 2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one is shipped in tightly sealed containers, protected from moisture and light. Handling complies with chemical safety regulations, ensuring proper labeling and documentation. The package typically includes hazard communication materials, is cushioned to prevent breakage, and shipped under standard, non-refrigerated conditions unless otherwise specified by the manufacturer’s guidelines.
    Storage **2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from direct sunlight, moisture, and incompatible substances such as strong oxidizers and acids. Ensure proper labeling and secondary containment, and avoid exposure to heat or ignition sources. Follow all relevant chemical safety guidelines and local regulations.
    Application of 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One

    Applications of 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One in Industrial Manufacturing

    2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One serves as a high-purity intermediate across advanced industrial synthesis pathways. As a direct manufacturer, we supply this compound to production sites performing specialized downstream reactions where consistency, compliance, and strict traceability are non-negotiable. We detail below several key industrial fields benefitting from this material, highlighting exact compliance, input ratios, process touchpoints, and final market outputs.

    1. Active Pharmaceutical Ingredient (API) Synthesis for Central Nervous System (CNS) Drugs

    Pharmaceutical manufacturers use 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One to construct complex heterocyclic scaffolds for CNS-targeted APIs, including specific anticonvulsants and anxiolytics. This intermediate enters the stage following proof-of-concept and route selection, where controlled synthesis parameters (temperature, solvent, purification) prevent byproduct formation. We supply our material to cGMP-compliant sites prioritizing batch release documentation for regulatory submissions across international markets.

    Industry compliance standards

    • ICH Q7: Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • EU GMP Annex 8: Sampling of Starting and Packaging Materials
    • USP-NF Monographs (as/if applicable per final drug substance)
    • 21 CFR Part 211: Finished Pharmaceuticals

    Typical usage ratio

    • 5–18 mol% relative to final API, adjustable based on molecular complexity and synthetic route.
    • Quantities scaled proportionally to 1–10 kg per batch for pilot lines, or up to 100+ kg for commercial production, set per process yield optimization and regulatory validation batch size.

    Downstream process integration

    • Integrated post-initial coupling as a core building block to assemble the heterocyclic nucleus.
    • Subjected to hydrogenation, alkylation, or cyclization steps prior to final API crystallization.
    • QC release includes purity and residual solvent control as intermediate.
    • Documentation forms part of the CMC (Chemistry, Manufacturing and Controls) file for DMF submissions.

    Final product types

    • Central nervous system API compounds (e.g., anxiolytics, novel antipsychotics)
    • Intermediates for clinical development candidates
    • Generic CNS-active pharmaceutical products
    • Reference standards for analytical labs

    2. Advanced Agrochemical Synthesis – Selective Fungicide and Herbicide Actives

    Agrochemical producers employ this material as a core fragment in the synthesis of fused-ring selective fungicide and herbicide actives. Its chemical stability and reactivity minimize decomposition during subsequent halogenation or sulfonation stages. Our production adheres to aggressive impurity profile requirements set forth by authorities, allowing customers to meet registration standards and secure product launch windows in competitive crop protection markets.

    Industry compliance standards

    • FAO/WHO: Specifications and evaluations for pesticide active ingredients (including relevant JMPS guidelines)
    • ISO 9001:2015 for manufacturing quality assurance
    • REACH Registration (Regulation (EC) No 1907/2006)
    • OECD Guidelines for the Testing of Chemicals (environmental risk assessment)

    Typical usage ratio

    • 7–25 wt% relative to the total mass of synthetic batch; adjusted to target yield, cost, and regulatory active substance concentration.
    • Dosage adapts based on desired functionalization and final active concentration for dosage forms (SC, WG, EC formulations).

    Downstream process integration

    • Material enters at the key cyclization or ring-extension step for active core assembly.
    • Subjected to functional group derivatization, followed by isolation and purity upgrade by column chromatography or crystallization.
    • Integrated impurity profiling at the crude stage to mitigate downstream regulatory holds.
    • Packaged as an isolated intermediate ready for technical material dilution and formulation blending.

    Final product types

    • Selective triazine or isoxazole-based herbicide technicals
    • Novel fungicide actives for cereals and vegetables
    • Formulated crop protection products (suspension concentrates, water-dispersible granules)
    • Stability reference samples for regulatory submissions

    3. Specialty Dye and Pigment Intermediates for Electronic and Optical Materials

    Electronic and optical material producers utilize this compound in synthesizing specialty dyes and pigments for organic electronics, electroluminescent displays, and advanced laser printing toners. The heterocycle supports extended conjugation systems, promoting high charge mobility and light absorption. Our grade targets low trace metal contamination, enabling high photostability and device longevity required in high-value display technologies.

    Industry compliance standards

    • IEC 61249-2-21: Halogen-free electronic interconnect materials
    • RoHS (2011/65/EU) for restricted hazardous substances
    • IEC 62321: Methods for determination of certain hazardous substances in electrotechnical products
    • QSAR assessments per ECHA requirements (for photographic and electronic intermediates)

    Typical usage ratio

    • 2–12 wt% relative to base aromatic feedstock in pigment or dye synthesis batch.
    • Range varies by product line; increased loading optimizes oscillator strength in laser dyes, while reduced input favors low-bleed, high-durability toners.

    Downstream process integration

    • Charged as coupling partner in the azo dye or conjugated pigment core build.
    • Handled in controlled, dust-free environments to minimize cross-contamination for microelectronic applications.
    • Integrated into reaction vessels after initial substrate activation and prior to heat treatment and purification.
    • Post-synthesis, intermediates are isolated and upgraded before formulation into printable inks or injection-moldable plastics.

    Final product types

    • Organic electroluminescent dyes for OLED displays
    • High-contrast digital printing pigments
    • Advanced toner resins for laser printers
    • Specialized compounds for anti-counterfeit inks

    4. Intermediates for Synthetic Flavor and Fragrance Compounds

    In the fine chemical sector, perfumery and aroma chemical manufacturers use this material to build nitrogen- and oxygen-containing heterocycles, which serve as key motifs in complex synthetic flavors and fragrances. These molecules act as fixatives or character impact components in high-end formulations, requiring precise impurity profiling and consistent olfactory performance. Our processes guarantee batch-to-batch reproducibility and maintain compliance with global flavor and fragrance regulations.

    Industry compliance standards

    • IFRA Code of Practice (guidelines of the International Fragrance Association)
    • FEMA GRAS list for flavor ingredients
    • EU Regulation (EC) No 1334/2008 on flavourings and certain food ingredients
    • ISO 9001:2015 for traceability

    Typical usage ratio

    • 1–8 wt% in the heterocycle assembly stage of aroma or flavor bases.
    • Ratio adjusted depending on potency, volatility profile, and required chain extension in the target compound.

    Downstream process integration

    • Utilized during the multi-step synthesis of key odorant or flavorant structural frameworks.
    • Undergoes ring functionalization or oxidation before blending with other organics.
    • Quality control checks for off-notes or residual solvents as per flavor industry norms.
    • Delivered as purified, low-odor intermediate for further downstream modification, extraction, or encapsulation.

    Final product types

    • Complex base notes for high-value perfumes
    • Nitrogen-heterocycle synthetic flavors for beverages and confectionery
    • Fragrance fixatives for detergents and personal care goods
    • Stable aroma chemicals for flavor enhancers
    Free Quote

    Competitive 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One: Supporting Innovation with Reliable Chemistry

    Our Experience with 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One Production

    Working with 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One every day, we have seen how this compound bridges crucial gaps in pharmaceutical research and synthetic chemistry. Our ongoing production focuses on quality, safety, and consistency because our partners are always pushing for reliable results. We follow robust manufacturing protocols, refine our purification steps, and verify every batch by using advanced analytical tools. The demand for high-purity intermediates continues to rise as new synthetic targets emerge. We see that reality in the questions we field from researchers and formulators week after week. Customers value robust manufacturing. Each sample we prepare demonstrates our handmade approach to process chemistry, from precision in reaction monitoring to scrupulous solvent control during isolation and washing.

    Over the years, we've refined our operations so that our 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One meets the precise requirements of both small-scale innovation and larger development runs. Rather than chase volume alone, we devote equal energy to reproducibility and clear documentation. Our senior process chemists continually monitor reaction selectivity, as the substitution pattern on this compound means byproducts can pop up if conditions drift. By maintaining strict temperature and mixing protocols, we mitigate risk for batch-to-batch variation. For end users, reliability means researchers spend less time troubleshooting starting material and more time pushing their own discoveries forward.

    Model and Specifications Guide Real-World Uses

    In our daily operation, we prepare 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One tailored to the structural requirement that scientists specify. Our typical batches focus on a minimum purity of 98% by HPLC, a standard we set based on feedback from medicinal chemistry and custom synthesis teams. Moisture and residual solvent controls are equally strict, routinely checked by KF and GC methods. Fine solids may cause headaches downstream, so we pay close attention to controlling crystal form and particle size during isolation. Our QC staff validate ID through NMR and mass spectrometry before material leaves the facility. This hands-on process helps ensure that researchers and engineers can plan their next steps with confidence. We maintain stability studies to assure that product remaining in storage can serve long-term campaigns.

    Experience in production has taught us that even small differences in purity or crystallinity can make or break a synthetic route. For this reason, we engage directly with users to customize material as needed, rather than assuming a one-size-fits-all solution. We understand that pharmaceutical and fine chemical contexts often require rigorous documentation, so our batch records and testing protocols reflect the scrutiny of regulatory review. Researchers working with cytotoxic intermediates or high-value targets expect nothing less, and this accountability sits at the core of our relationship with the market.

    Real-World Applications and User Feedback

    Feedback from R&D teams has opened our eyes to the importance of chemical intermediates such as 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One in various fields. Most commonly, the compound enters the conversation as a scaffold for pharmaceutical candidates. The unique bicyclic structure pairs a pyridine ring with an oxazinone motif, creating a launching pad for a wide array of structure-activity explorations. Our colleagues in new drug discovery gravitate toward this scaffold as both a lead-like fragment for combinatorial library design and a building block for more elaborate heterocycles. The stability of the oxazinone moiety under mild conditions allows for exploration of functional group interconversions that less robust analogs can't support.

    We've also seen opportunities outside the laboratory. Agrochemical developers exploring new modes of action view the heterocyclic core as a promising route to selective pesticidal agents. Materials chemists ask for high-purity compounds when studying electron-rich heterocycles for use in photovoltaic research or molecular electronics. Every application shapes our standards and informs future improvements in our process.

    Distinctions from Other Intermediates

    Years of experience in the sector have taught us plenty about the subtle but important differences between 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One and related compounds. Compared to the more well-known 1,4-benzoxazin-3-ones, our pyrido analog introduces a nitrogen atom in the aromatic core, which shifts electron density and alters both the chemical reactivity and the biological profile. Medicinal chemists leverage this difference when tuning physical and metabolic properties; the presence of the pyridine nitrogen often impacts hydrogen-bonding and solubility. In our production, this distinction means separate process design—for example, we monitor pH adjustment and solvent selection more closely, as some solvents interact differently with the heterocyclic structure.

    Conventional pyridine derivatives lack the fused oxazinone ring, so they don’t provide the same rigid core or functional handles that are present in our product. Our synthesis route accounts for potential side reactions unique to this structural motif. These subtle differences matter for anyone designing new molecules or scale-up procedures. We speak regularly with chemists troubleshooting low yield or poor selectivity in projects with related compounds, and we help by diagnosing whether structural or process changes are needed.

    Quality Assurance in a Changing Marketplace

    We don’t just talk about quality; we live it day to day. Production of specialty intermediates like 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One requires tighter controls than many bulk chemicals. We keep firm documentation, follow standard operating procedures, and continually monitor environmental conditions throughout manufacture and storage. Labs using our material trust this approach because their research stakes demand reliable starting points. If we slip on purity or misidentify a batch, the downstream impact on a collaborative research project could cost weeks or months. Some partners have shared stories of costly delays from encountering subpar material supplied by handlers unfamiliar with process details; we work hard to prevent these scenarios.

    To hold ourselves accountable, we welcome third-party audits and regularly participate in industry benchmarking. These reviews drive us to aim higher, fix weaknesses, or adopt new analytical approaches when needed. Large pharmaceutical companies often run their own in-house validation programs, but smaller groups rely on us for complete transparency about synthetic methods, residual impurities, and real shelf-life data. The market expects nothing less than strict adherence to these practices.

    Manufacturing Challenges and Solutions Learned Over Time

    Production of 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One is not without pitfalls. Synthesis routes generally call for multi-step processes involving ring closure, oxidation, and controlled substitution. For example, an uncontrolled temperature ramp during ring formation can introduce minor byproducts that show up during downstream derivatization. Over the years, we've updated our process to use accurate digital monitoring paired with regular spot-checks using TLC and HPLC. This blend of technology and hands-on chemistry cuts down rework and makes troubleshooting easier.

    Solvent selection remains another key variable. The presence of high-energy intermediates during certain steps means that some traditional solvents might degrade or react with sensitive species. Through experience, we've found that moving to greener solvents—where possible—offers a clear advantage. Not only do these materials reduce environmental risk, but they also simplify the regulatory burden some end users face in downstream applications. Waste management plays a regular role in our internal improvement meetings. We invest in better filtration, solvent recycling, and containment to keep our operations safe and sustainable, because our employees and our community expect stewardship.

    Supporting Scientific Collaboration with Reliable Chemistry

    Our long-standing relationships with research labs, contract development organizations, and in-house pharmaceutical groups have made clear just how interdependent modern chemical innovation has become. One poorly-manufactured intermediate can bring an entire project to a halt, a reality not lost on us. That’s why we invest in clear communication, flexible order sizes, and rapid response for urgent projects.

    Experience tells us that even the best-designed molecule can fall short if batch records, material characterization, and safety data are not managed properly. We field requests for documentation showing complete traceability, and we keep archival records in compliance with industry best practices. This applies not only to pharmaceutical labs but to every team looking to push the boundaries of chemistry.

    Continuous Improvement Based on User Needs

    We don't stand still. Each interaction with research teams, whether it’s routine feedback or troubleshooting a complex issue, gives us insight into new directions for product development. For example, as more partners use parallel synthesis to accelerate discovery, we’ve begun supporting smaller batch sizes and direct-to-vial deliveries. This saves time and limits exposure to air or moisture, making life easier for bench chemists during screening campaigns.

    Several years ago, a customer flagged inconsistencies in reactivity traces between batches of 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One purchased from multiple sources. We reviewed our internal controls, stepped up inter-batch comparison, and have since introduced a “retain sample” program for records. We now keep archival samples for every lot shipped. Our chemists continue to learn from these experiences and adapt. The willingness to recognize imperfections, dig into root causes, and accept customer critique keeps us on the right track.

    Environmental Responsibility in Manufacturing

    The chemical sector is under increasing scrutiny for its environmental footprint. Over the past few years, we’ve actively reduced our reliance on hazardous reagents and minimized solvent waste. Whenever feasible, we swap out halogenated solvents or toxic catalysts for friendlier options, and we report these changes in plain language to our partners. Our staff train regularly on safe handling procedures and spillage response, not as a formality but out of real understanding of accident risks on an active plant floor.

    Environmental efforts go beyond the plant gate. We share best practices with customers working to “green” their own labs. By focusing on recyclability, low-waste isolation methods, and water usage reduction, we do our part to prove that modern chemical manufacturing can compete on both quality and environmental care. Many of our long-term partners cite this record as a deciding factor in choosing us for new collaborations.

    Regulatory and Safety Considerations

    Not every manufacturer handles regulatory details with rigor, but it is a core part of the service we offer. As more 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One enters regulated supply chains—such as clinical drug pipelines—we regularly share detailed information about synthesis route, impurity profile, and document retention. Our internal audits keep these records current and accessible, reducing the burden on our partners during inspection or transfer of data to global regulatory bodies.

    Safe handling training is built into every employee’s onboarding. Our teams work under process-specific protocols designed to limit accidental exposure, mitigate exothermic risks during certain synthetic steps, and provide clear guidance on proper PPE use. Over the years, plant managers have caught potential issues through vigilance and a culture of speaking up about safety concerns. Sharing these stories within the company helps cement a future-focused approach to process safety.

    Working Toward Strategic Partnership in Chemical Discovery

    Every order for 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One represents a small but crucial link in a larger innovation chain. Because our teams interact directly with scientists, we often see how tweaks to an intermediate—or greater documentation—accelerate the search for new therapeutics, advanced materials, or agrochemical agents. We believe the right approach means never losing sight of the end-user’s needs, even as scale, global regulations, and market demands create new pressures.

    Our growth in this domain has come not just from selling a product, but from building relationships over the long term. Teams return to us because we answer their questions based on real-world production experience, admit when something is unclear, and work together to resolve problems as new challenges emerge. This is how our perspective as a manufacturer—with feet on the ground and hands in the lab—keeps us connected to the shifting needs of modern chemistry.

    Real Stories from the Field

    We get regular feedback from teams at the intersection of basic chemistry and real-world application. One team working on central nervous system (CNS) drug candidates found that commercial oxazinones often failed their purity requirements, stalling key toxicology studies. After discussing their requirements with our chemists, we adapted our recrystallization procedure and fine-tuned our column purification to address specific trace contaminants. Their project moved forward on schedule, and that material laid the groundwork for early-stage clinical studies. These partnerships remind us that paying attention to the details, not just batch capacity, defines quality in our field.

    Another customer had encountered product that failed storage stability in humid conditions. This led us to study packaging materials, climate-controlled warehousing, and secondary moisture barriers. Such lessons have helped us refine not only how we ship but also how we educate our users about storage practices to optimize shelf life and prevent unwanted degradation, especially under variable transit conditions.

    Commitment to a Principled Manufacturing Philosophy

    Our approach blends technical excellence with a sense of responsibility to researchers and society. We back up every claim about purity or reactivity with hard data, regular transparency, and customer collaboration. By investing in continuous process improvement, upgrading to greener chemistry, and maintaining rigorous safety and regulatory standards, we aim to do more than keep up—we look to set an example for chemical manufacturing done well.

    We understand that the success of 2H-Pyrido[3,2-B][1,4]Oxazin-3(4H)-One as a research and development building block relies on an unbroken chain of trust, communication, and know-how. Our goal remains to support every user on this journey, ensuring new projects begin with a reliable foundation and every researcher can focus on moving the science forward.