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2-Pyridinol-1-Oxide

    • Product Name 2-Pyridinol-1-Oxide
    • Alias 2-Hydroxypyridine N-oxide
    • Einecs 221-247-6
    • 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

    457858

    Name 2-Pyridinol-1-Oxide
    Molecular Formula C5H5NO2
    Molecular Weight 111.10 g/mol
    Cas Number 1698-50-6
    Appearance White to off-white solid
    Melting Point 143-145 °C
    Solubility In Water Soluble
    Pubchem Cid 295432
    Synonyms 2-Hydroxypyridine N-oxide
    Smiles C1=CC=NC(=C1)O[N+](=O)[-]
    Inchi InChI=1S/C5H5NO2/c7-5-3-1-2-4-6(5)8/h1-4,7H

    As an accredited 2-Pyridinol-1-Oxide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle with screw cap, labeled "2-Pyridinol-1-Oxide, 25g," hazard pictograms, batch number, and manufacturer information.
    Shipping 2-Pyridinol-1-Oxide is shipped in securely sealed containers to prevent moisture and contamination. It should be packed in accordance with chemical safety regulations, typically using leak-proof packaging and appropriate cushioning. The shipment must include proper labeling and documentation, and should comply with all relevant local and international hazardous material transport regulations.
    Storage 2-Pyridinol-1-oxide should be stored in a tightly sealed container, protected from moisture and direct sunlight. Store at room temperature in a cool, dry, and well-ventilated area, away from incompatible substances such as strong acids and oxidizers. Ensure proper labeling, and avoid exposure to excessive heat or sources of ignition. Use secondary containment to prevent spills or contamination.
    Application of 2-Pyridinol-1-Oxide

    Applications of 2-Pyridinol-1-Oxide in Industrial Manufacturing

    2-Pyridinol-1-Oxide provides significant reactivity and chelating ability for specialized chemical manufacturing requirements. As the original producer, we supply bulk volumes worldwide for regulated production routes in several critical downstream industries. Below, we outline application fields, displays of process roles, compliance details, recommended loadings, and categories of end products fabricated by market leaders.

    1. Agricultural Fungicide Intermediate Synthesis

    Producers utilize 2-Pyridinol-1-Oxide as a building block in triazole or strobilurin fungicide precursor synthesis. The compound’s electron-donating characteristics support targeted oxidation and cyclization steps, driving yield improvement. Manufacturers optimize batch and continuous processing based on substrate purity, maintaining stable impurity profiles necessary for regulatory dossiers of agroactive substances.

    Industry compliance standards

    • FAO/WHO Agricultural Pesticide Guidelines (JMPR)
    • ISO 9001 for agrochemical materials
    • EU 1107/2009 and EPA 40 CFR Part 158 (active substance registration)
    • REACH Regulation Annex VII–X (for supplied intermediates)

    Typical usage ratio

    • 5%–15% by weight of total reaction batch; final ratio adjusted according to the target active ingredient yield and reaction selectivity requirements.

    Downstream process integration

    • Charged during early condensation or oxidative transformation stage, prior to final workup and purification of fungicidal compounds in multi-step synthesis lines.

    Final product types

    • Triazole-based fungicide actives (e.g., propiconazole, tebuconazole)
    • Strobilurin-based fungicides (e.g., azoxystrobin intermediates)
    • Registered technical-grade fungicides for crop protection
    • Formulated pesticide products for cereals, fruits, and vegetables

    2. Corrosion Inhibitor Synthesis for Metalworking Fluids

    Metalworking fluid manufacturers apply 2-Pyridinol-1-Oxide as a chelating intermediate for producing specialized corrosion inhibitors. Its structure forms complexes with divalent cations, suppressing oxidation on metal surfaces in formulated coolants and hydraulic fluids. Production scales depend on lubricant formulation, with stringent control of residual impurity content due to direct contact with machined parts.

    Industry compliance standards

    • ASTM D6557 (metalworking fluid testing)
    • EU REACH registration for intermediates
    • ISO 6743/7 lubricant standards for metalworking fluids
    • US FDA 21 CFR 178.3910 (for incidental food contact lubricants when relevant)

    Typical usage ratio

    • In final additive synthesis: 2%–10% of total formulation, optimized based on metal exposure conditions and targeted corrosion protection specification.

    Downstream process integration

    • Dosed at synthesis or blending step for additive packages, then incorporated into base fluids using inline homogenization systems during manufacturing.

    Final product types

    • Anticorrosion additives for synthetic and semi-synthetic cutting fluids
    • Metal protection packages for hydraulic oils
    • Chemically resistant lubricants for industrial processing equipment
    • Lubricant concentrates for automotive and aerospace supply chains

    3. Pharmaceutical Intermediate for Antimicrobial Agents

    Pharmaceutical manufacturers select 2-Pyridinol-1-Oxide for its utility as an intermediate in heterocyclic synthesis of active pharmaceutical ingredients with antimicrobial function. Reaction optimization supports high-purity output under regulated cGMP conditions, with strict documentation for traceability. Its reactivity accelerates construction of pyridine-containing moieties present in oral and topical drugs.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • USP/NF, EP, JP compendium listings (where applicable for finished APIs)
    • FDA 21 CFR Part 210/211 Current Good Manufacturing Practice
    • EDQM CEP certification process (pharmaceutical supply stream)

    Typical usage ratio

    • 1%–8% by mass in heterocyclic ring synthesis; final input adjusted for target molecule structure and reaction stoichiometry in medicinal chemistry scale-up.

    Downstream process integration

    • Charged during ring-forming synthesis, prior to chromatographic purification for isolation of the finished API or precursor in GMP-compliant pilot and commercial lines.

    Final product types

    • Quaternary ammonium antimicrobial actives
    • Active pharmaceutical ingredients for prescription and OTC drugs
    • Topical antimicrobial agents for skin preparations
    • Veterinary pharmaceuticals targeting microbial resistance

    4. Chelating Agent in Water Treatment Chemicals

    Water treatment chemical manufacturers employ 2-Pyridinol-1-Oxide as a chelating component in formulations for boiler, cooling, and industrial process water. Its strong metal chelation improves deposit and scale resistance, contributing to longer cycle operation and protection of downstream assets. The compound is typically used under tight dosage control, as residuals must comply with local effluent limits and drinking water regulations.

    Industry compliance standards

    • NSF/ANSI Standard 60 (Drinking Water Treatment Chemicals)
    • EN 1212 for chemicals used for treatment of water intended for human consumption
    • ISO 14001 for environmental management of wastewater processes
    • RoHS compliance for indirect contact in electronics water circuits

    Typical usage ratio

    • 0.01%–0.05% of total treated water volume; adapted by engineering based on source water hardness and target metal ion sequestration requirements.

    Downstream process integration

    • Injected directly to chemical dosing skids in water treatment facilities, with real-time monitoring of chelant performance and residuals in closed and open-loop systems.

    Final product types

    • Boiler scale prevention chemicals
    • Industrial cooling water system treatments
    • Process water cleaning formulations for electronics and food plants
    • Municipal drinking water purification additives

    5. Fine Chemical Synthesis for Laboratory Reagents

    Producers of specialty laboratory chemicals use 2-Pyridinol-1-Oxide in the manufacture of sensitive analytical reagents and reference standards. The compound’s chelation profile enables preparation of complexometric titrants and indicators for metal analysis. Rigorous batch QC, including NMR and HPLC purity checks, secures traceability needed in certified lab environments. Storage and distribution require inert atmosphere packaging to maintain analytical grade quality.

    Industry compliance standards

    • ISO 17034 Reference Material Producer accreditation
    • ISO 9001 for fine and specialty chemicals
    • OECD GLP (Good Laboratory Practice) for analytical reagents
    • UN Recommendations on the Transport of Dangerous Goods

    Typical usage ratio

    • 0.1%–1% for titrant or indicator preparation; precise weight accuracy based on analytical method validation and targeted detection limits.

    Downstream process integration

    • Formulated during the blending of reference standards, prepared and aliquoted in certified cleanrooms prior to packaging for laboratory or research distribution channels.

    Final product types

    • Certified complexometric titrants for trace metal analysis
    • Metal ion indicators for environmental and food QC labs
    • Analytical reference solutions for chemical testing
    • Specialty reagents used in R&D and process development
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    Certification & Compliance
    More Introduction

    2-Pyridinol-1-Oxide: Supporting Chemical Progress with Proven Consistency

    After years of responding to changes in the chemical industry, we have come to rely on certain molecules for consistent, precise results. 2-Pyridinol-1-oxide stands as one of those compounds we trust based on how it performs across research and industrial laboratories. Our facility chose to develop this product on a large scale because researchers and formulation experts kept coming back to it for a simple reason: reliable behavior even as batch requirements, regulations, or project goals have shifted. This isn’t something we judge lightly. Too many times, supply chain issues or slight inconsistencies can send processes sideways and disrupt entire development timelines. We focus on purity, control, and reproducibility so each customer receives identical performance run after run.

    Different from the Average Pyridine Derivative

    In our experience, the utility of 2-pyridinol-1-oxide comes from its unique electronic and structural properties. N-oxide groups bring about dramatic shifts in reactivity compared to unsubstituted pyridines. Chemists aiming to tune chelation strength, manipulate oxidative states, or create ligands with finer control gravitate towards this compound, and we have responded to those needs by refining our synthesis process year over year. Pyridine derivatives often carry tricky residuals or process byproducts; we’ve seen that with countless other related chemicals. Our production cycle for this molecule focuses on clean phase separations, careful washing, and point-by-point monitoring of both organic solvent loads and crystalline purity. By building infrastructure to control every variable, we’ve managed to deliver a 2-pyridinol-1-oxide with a purity standard tailored to both experimental and pilot-scale manufacturing.

    Model and Specification Choices Backed by Experience

    The two grades we offer come from direct customer feedback about what works where. Lab and R&D applications typically call for a higher purity, so we maintain a batch at >99% with residual solvents brought down to trace levels. Our QC team screens using both HPLC and NMR, and we confirm each batch by mass spec to catch the outliers. This higher tier keeps background signals at bay in analytical methods, which critical for anyone doing mechanistic studies or quantifying reaction intermediates. Based on fieldwork with larger reactors and scaling partners, we also developed a process-grade material at around 97–98% purity. This meets the needs of bulk projects, soil remediation operators, and those synthesizing metal-ligand complexes in greater volume. We learned that most applications outside analytical research could tolerate trace byproducts as long as post-processing goes smoothly; crystallinity, filterability, and bulk density are the real sticking points at that scale. Our investment in particle sizing, drying controls, and silica filtration has minimized customer headaches linked to clogged filters or sticky residues.

    Real-World Applications in the Field and Lab

    2-Pyridinol-1-oxide has found use in a surprisingly wide range of research and industrial settings. Coordination chemists rely on it as a core N-heterocyclic ligand. Its selectivity toward metal ions—especially those with oxophilic or borderline behaviors—has made it a staple material in nickel, zinc, and transition metal complex synthesis. Some customers use it as a precursor in custom catalyst development, particularly in the fine chemical and pharmaceutical industries. We’ve seen uptake among soil and water remediation groups, too. Chelation and sequestration of heavy metals aren’t theoretical for us; we’ve supplied larger lots for projects targeting site cleanups, where the ability to bind and immobilize specific ions can impact both environmental outcomes and ongoing regulatory approval for a business or city.

    Research teams have highlighted its value as an intermediate for synthesizing more complex pyridine N-oxide derivatives, many of which have found footholds in medicinal chemistry or as biologically active agents. During late-stage impurity profiling, our customers often discover subtle differences in reactivity between 2-pyridinol-1-oxide and structurally similar compounds such as 2-hydroxypyridine or pyridine N-oxide. The extra control over oxidation state, donor atom orientation, and resistance to hydrolysis sets it apart. We put resources into verifying batch homogeneity and minimizing isomeric rearrangements that, at scale, would otherwise cause off-target reactions or dosage inconsistencies down the supply chain.

    Differentiating Factors from Other Market Options

    We have handled a variety of pyridine N-oxides as both custom and catalog products. Many versions come with high water content or exhibit batch-to-batch volatility in melting points, which creates uncertainties for QC teams or complicates direct use in automated systems. By pointing analytical controls squarely at residual water, crystal form, and particle size, we closed those gaps. Some sources overlook purification at the solid-liquid boundary, and that’s where visible yellowing, oxidized debris, or variable tablet strength start to matter for buyers who demand fine powders or reproducible slurry behavior. Our solvent-removal and drying lines underwent upgrades several years ago based on customer complaints; since then, we’ve noticed far fewer service inquiries from those scaling up or linking our product into continuous processes.

    Another divide emerges in packaging flexibility. We worked with formulation partners who required the compound in forms ranging from sealed glass ampules for air-sensitive studies to lined drums for bulk delivery. Some competing manufacturers focus on one or the other, but minimizing the risk of moisture ingress or airborne contamination has consistently reduced customer returns and safeguarded overall quality and safety.

    Lessons and Trends from Hands-On Work

    Decades in fine chemical manufacturing have taught us that purity only counts when it translates directly to end-user success. The difference between a successful batch and a failed synthesis often lies in small details—the lot-to-lot variation, the subtle hygroscopicity, or the particle morphology. Early on, even slight differences in residual base or acid content led to inconsistent pH behavior once the product reached downstream reactors. Multiple feedback cycles with our clients pushed us to adopt both acid-neutralized and base-neutralized finishing steps as standard practice, depending on what the customer described encountering in their own process. Process validation at every handover point within our plant means we catch shifts before they compound, which lowers the risk for chemists and operators who rely on the material for high-value projects.

    Environmental responsibility ties into this story as well. Waste minimization in our process allows us to reduce downstream burdens for our customers. By refining purification and integrating solvent recycling, we shrink the byproduct stream, and automation stops us from accidentally spiking impurity levels above agreed-upon specs. Customers often reference our take-back drum proposal when negotiating terms: we engage in closed-loop models for packaging and accept return of certain containers so the material footprint never balloons beyond what global standards or local regulators now demand.

    Feedback from users in water analytics added another dimension to our continuous improvement. Some environmental labs needed assurance on micro-scale contaminants, especially since trace metals and organics in the product could skew sensitive readings. In response, we tuned our internal analytical standards to match what independent testing labs now expect—IC, ICP-OES, and even high-sensitivity organic residue methods. These upgrades weren’t marketing choices. By preventing small interferences from slowing down environmental testing, we helped clients shorten sample prep times and raise their detection accuracy. Stories like this—straight from the field—have informed every process tweak we made.

    Support for Custom Research Directions

    Our technical team received requests for one-off modifications on 2-pyridinol-1-oxide—swapping out residual counterions, introducing labeled isotopes for tracing, or preparing suspended or micronized forms for high-throughput studies. Instead of pushing back or routing requests through layers of bureaucracy, we work hand-in-hand with chemists who explain what they need, why trace chlorides or sodium might matter, and how downstream conversion steps hinge on very specific process outcomes. This way, the development cycle runs faster, and our manufacturing loads align more closely with real-world research objectives. The ability to partner directly with those at the lab bench, without unneeded intermediaries, keeps our workflow nimble and our results relevant.

    Industry and Regulatory Considerations

    Across pharmaceuticals, agrochemicals, and industrial catalysis, compliance shapes what and how we can ship. Our facility underwent repeated audits to qualify for both ISO standards and local regulatory requirements. Tracking, transparency, and batch retention are routine at every scale. Customers have asked about nitrosamine risks, heavy metal content, and potential byproducts, especially as authorities update global safety standards. Instead of dodging these questions, we invested in expanded analytics, more robust documentation, and transparent certificates of analysis.

    Handling of the compound itself—a moderately reactive, crystalline solid—motivates us to keep packaging and documentation clear. Field operators, pilot plant technologists, and academic collaborators each raised separate points about storage, decomposition risks, and shelf-life. Our controlled storage experiments—not marketing claims—helped us set real best-before dates and handling guidance, which we include with every lot, large or small. People trust us with sensitive materials because our advice grows out of actual hands-on trials, not abstract regulation or sales-driven priorities.

    Moving Chemical Production Forward

    Knowledge of current supply chain realities shapes what we can promise our buyers. Relying on single-source precursors led to disruptions in the past, so we diversified supplier relationships and built redundancy into our primary upstream inputs. We’ve experienced global shipping delays and price spikes for both solvents and specialty reagents. To buffer those shocks, our plant integrated stockpile lines and flexible scheduling that let us pivot between grades, volumes, and packaging formats as needed. This flexibility exists out of necessity; researchers, scale-up engineers, and commercial buyers all have different timelines and logistical constraints. By fielding short-run, just-in-time deliveries alongside contract supply agreements, we have maintained a consistent link between our manufacturing hub and the wider innovation cycle in which our clients work.

    Several partners highlighted intangible differences in long-term supplier relationships. They pointed out the value of access to technical support—real process chemists, not call center scripts—when trouble arises. Our willingness to troubleshoot, review spectral data, and spot deviations in application outcomes makes a more direct impact than any glossy brochure or formula sheet. We have kept staff with backgrounds in actual synthetic, industrial, and analytical chemistry to answer those questions in real time.

    Continued Dialogue: A Two-Way Process

    Progress in chemical manufacturing emerges from dialogue. Our work with 2-pyridinol-1-oxide evolves with each new use case, from electronic material synthesis to emerging remediation techniques in environmental risk projects. By combining practical experience with a continuous improvement mindset, we help clients overcome real challenges, whether that means troubleshooting clogging in reactors or building more robust impurity controls into their method development. Our company keeps learning not only from the molecule itself, but also from the sheer diversity of ideas and feedback from the researchers and scale-up teams who come back to us again and again.

    As new regulations appear, as industries adapt, and as project requirements shift, we see 2-pyridinol-1-oxide’s value proven again and again. Our plant’s commitment to transparent communication, technical precision, and flexible production means our customers can devote less time worrying about raw materials and more energy advancing their own discoveries and products. Each kilogram we send out is the result of years of iteration and hard-won practical insight into what works, what falls short, and how a trusted supplier can become a real partner in chemical progress.