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4-Hydroxy-3,5-Dibromopyridine

    • Product Name 4-Hydroxy-3,5-Dibromopyridine
    • Alias 4-Hydroxy-3,5-dibromopyridin-1-ium
    • Einecs 629-132-1
    • 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

    980983

    Product Name 4-Hydroxy-3,5-Dibromopyridine
    Cas Number 1632-81-1
    Molecular Formula C5H3Br2NO
    Molecular Weight 268.89 g/mol
    Appearance Off-white to light brown solid
    Melting Point 140-144°C
    Solubility Slightly soluble in water, soluble in organic solvents
    Purity Typically ≥98%
    Synonyms 3,5-Dibromo-4-hydroxypyridine
    Smiles C1=C(C(=CN=C1Br)O)Br
    Inchi InChI=1S/C5H3Br2NO/c6-3-1-4(9)5(7)8-2-3/h1-2,9H

    As an accredited 4-Hydroxy-3,5-Dibromopyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

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    Application of 4-Hydroxy-3,5-Dibromopyridine

    Applications of 4-Hydroxy-3,5-Dibromopyridine in Industrial Manufacturing

    4-Hydroxy-3,5-Dibromopyridine serves critical intermediate functions in several chemical and pharmaceutical industries. As an established manufacturer, we provide this compound to support industrial syntheses across diverse, end-user sectors with strict regulatory, purity, and workflow requirements. Below we present verified downstream applications, highlighting specific compliance, formulation, process, and final product considerations for each use case.

    1. Active Pharmaceutical Ingredient (API) Synthesis for Antiviral Drugs

    Pharmaceutical manufacturers use this intermediate for multi-step synthesis routes, especially in the development of antiviral drug candidates. Its dibromo-hydroxy substitution pattern aids in constructing pyridine-based scaffolds critical for nucleoside antivirals. Downstream integration demands high purity, traceability, and consistency for validation in regulated environments.

    Industry compliance standards

    • Current Good Manufacturing Practice (cGMP) under FDA 21 CFR Parts 210/211
    • ICH Q7 guidelines for API manufacturing
    • Ph. Eur., USP, JP relevant monographs and impurity controls
    • Traceability to approved Drug Master File (DMF) batches

    Typical usage ratio

    • Mol ratio: 0.8–1.2 eq as core building block (adjusted based on target scaffold complexity and byproduct profiles)

    Downstream process integration

    • Charged into early-stage condensation or ring functionalization step after pre-filtration
    • Monitored by HPLC/GC for residual brominated fragments and hydroxy group stability during process scale-up

    Final product types

    • Brivudine and related nucleoside antiviral actives
    • Pyridine-based small-molecule research compounds
    • Intermediate-stage, pre-formulation pharmaceutical bulk

    2. Agrochemical Intermediate for Fungicide Synthesis

    Agrochemical producers employ this compound as a precursor in synthesizing modern pyridine-derived fungicides, targeting broad-spectrum control agents for crops. Accurate dosing and analytical quality are essential to meet both global export requirements and in-country product registrations.

    Industry compliance standards

    • FAO/WHO specifications for technical material purity
    • EU Plant Protection Product Regulation (EC) No. 1107/2009
    • China GB/T and NY/T standards for agrochemical intermediates
    • OECD guidelines for chemical intermediates documentation

    Typical usage ratio

    • Applied in 5–15 mol% excess relative to the halogenation or Suzuki coupling target (fine-tuned based on synthesis efficiency and cost factors)

    Downstream process integration

    • Introduced post-chlorination into the core skeleton assembly
    • Followed by further functionalization with amide, ester, or triazole groups

    Final product types

    • Pyridine-based systemic fungicides (e.g., unique triazolopyridine products)
    • Registered crop protection formulations for cereals, fruits, and vegetables
    • Bulk active ingredients for plant protection registered in global regulatory portfolios

    3. Fine Chemical Intermediate for Organic Electronic Materials

    Manufacturers of specialty electronic chemicals use the dibromo-hydroxy pyridine structure in the development of organic semiconductors and advanced OLED materials. High stability and consistent substitution patterns allow for reliable charge-transport layer construction in device manufacturing.

    Industry compliance standards

    • RoHS Directive 2011/65/EU for restricted hazardous substances
    • REACH Regulation (EC) No 1907/2006 for safe chemical management
    • SEMI S2 safety assessment standards
    • In-house cleanroom protocol for impurity and particle control

    Typical usage ratio

    • Standard: 0.5–1.5 wt% in monomer feed, adjusted for charge mobility and molecular weight requirements of end material

    Downstream process integration

    • Integrated at the monomer synthesis stage for subsequent polymerization
    • Processed via continuous flow chemistry or batch reactors for tailored film deposition properties

    Final product types

    • OLED emitting layer intermediates
    • Organic light-conducting films
    • Specialty polymers for electronic visual displays and flexible circuits

    4. Pharmaceutical Impurity Marker and Analytical Reference Standard

    Reference laboratories and QC divisions employ this compound as an identified impurity standard in both pharmaceutical development and finished product analysis. It allows precise tracking and quantitation via HPLC or LC-MS within validated impurity profiling workflows.

    Industry compliance standards

    • ICH Q3A/B for impurities in new drug substances and drug products
    • USP General Chapter <1058> Analytical Instrument Qualification
    • 21 CFR Part 11 for electronic records and data integrity
    • GLP (Good Laboratory Practice) compliance requirements for analytical testing

    Typical usage ratio

    • Prepared in analytical standard solutions at 0.05–1.0 mg/mL, as determined by product-specific validation protocols

    Downstream process integration

    • Crucial in system suitability, retention time calibration, and impurity quantification steps during routine batch-release testing
    • Applied for forced degradation pathway validation and regulatory submission documentation

    Final product types

    • Certified impurity reference materials for regulated pharmaceutical QC labs
    • Analytical kits for method development and system suitability checks
    • Supporting documentation for regulatory filings and marketing authorisation

    5. Custom Intermediate in Advanced Material R&D

    R&D divisions in specialty chemical and new material companies require this dibromo-hydroxy pyridine for targeted synthesis of engineered molecules, particularly for non-commercial binding agents, catalytic frameworks, or ligand development. Consistent batch integrity and supply documentation support scale-up and technology transfer.

    Industry compliance standards

    • ISO 9001:2015 for quality management in R&D sourcing
    • Corporate Responsible Care® initiative adherence
    • Compliance with local country-specific R&D chemical tracking regulations (e.g., TSCA in the USA, K-REACH in Korea)
    • MSDS provision and environmental assessment for all shipments

    Typical usage ratio

    • Experimental scale: 0.1–10 g per synthetic batch, larger for pilot plant validations (scaling determined by project uptake and synthetic yield)

    Downstream process integration

    • Used as core functional unit at ligand coupling or cross-coupling stages
    • Full characterization performed pre- and post-synthesis using NMR, mass spectrometry, and elemental analysis

    Final product types

    • Academic and industrial screening libraries
    • Proprietary catalyst prototypes
    • Materials for nanostructure assembly or surfactant performance trials
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    Certification & Compliance
    More Introduction

    Introducing 4-Hydroxy-3,5-Dibromopyridine: A Reliable Choice for Advanced Synthesis

    Bringing Precision to the Lab Bench

    Anyone who has spent time in the lab knows how the right chemical reagent makes all the difference between progress and frustration. I’ve seen teams struggle for hours with low-quality starting materials, only to get hit with inconsistent yields and nagging impurities. In my own work, having a compound that delivers what it says on paper — every time — gives real confidence about moving forward with a project. That’s where 4-Hydroxy-3,5-Dibromopyridine finds its momentum. With molecular structure C5H3Br2NO and a solid record for reliability, this compound doesn’t make you second guess the experiment.

    Quality Matters: Hands-On Experience Counts

    More than a simple niche compound, 4-Hydroxy-3,5-Dibromopyridine draws attention from chemists who value purity and reproducibility. Its double bromine-substituted pyridine backbone might sound technical, but what it brings to the table are high selectivity in various synthesis routes and greater stability during reactions. For those unfamiliar with halogenated pyridine derivatives, the subtle differences in substitution translate directly into reactivity and, eventually, into the properties of the final compounds. Chemists working on heterocyclic scaffolds or advanced pharmaceutical intermediates have watched this molecule open new routes, unlocking reactions previously tripped up by less responsive alternatives.

    Specifications With a Purpose

    From my own benchwork, I’ve come to recognize the importance of specifications that do more than fill a label. 4-Hydroxy-3,5-Dibromopyridine shows up in reputable labs with minimum purity levels above 98%, typically confirmed by NMR and HPLC analysis. Often, you’ll see melting points in the range of 190-194°C, which matches literature values, so you know what to expect before you even crack open the bottle. Handling this compound feels straightforward: it's generally a pale beige crystalline powder, non-hygroscopic, and packs easily for storage without fuss.

    For labs pushing for reliability, batch records and certificates of analysis provided with shipments boost transparency and trackability. You won’t find yourself scratching your head over unidentified peaks in your spectra, and I’ve seen first-hand how consistent purity helps bring new reactions online faster, without a series of tedious troubleshooting runs. If you rely on downstream biological testing or need to scale up, keeping that same standard is not a luxury — it’s a requirement for saving time and money.

    How Researchers Put It to Work

    4-Hydroxy-3,5-Dibromopyridine isn’t just a theoretical curiosity. Synthetic chemists often use it as a stepping-stone to access varied pyridine derivatives, especially for medicinal chemistry projects aiming to balance potency and selectivity. The hydroxy group on the ring gives a functional handle for further transformations, including O-alkylation, acylation, or cross-coupling reactions like Suzuki or Buchwald-Hartwig aminations. The two bromine atoms typically sit at the 3 and 5 positions on the ring, making this molecule a neat entry point for site-selective chemistry where predictable substitution patterns matter.

    I’ve seen medicinal chemists draw on its reactivity when designing kinase inhibitors, leveraging both the bromine groups for further substitution and the pyridine core for binding efficiency. In agricultural research, unique halogenated pyridine derivatives have unlocked new crop protection projects, where this compound feeds into libraries screened for improved activity and safety. And in academic labs, students regularly take it through classic aromatic substitution labs, where learning reaction science feels more tangible with reliable compounds.

    Setting It Apart: Real Differences from the Crowd

    Pyridine chemistry includes a dizzying range of derivatives, but not all function the same. With 4-Hydroxy-3,5-Dibromopyridine, the hydroxy position dramatically changes the way chemists access more complex molecules. Compared to standard dibromopyridine, the additional hydroxy offers a key site for targeted modifications. This functional group creates new pathways for synthesizing ethers, esters, and even late-stage functionalizations that often make or break a research project.

    In my own time collaborating across process chemistry teams, this meant fewer roadblocks and faster project advances. While you could choose unsubstituted 3,5-dibromopyridine or pyridine itself, you’d lose out on that extra reactivity. Every research group chasing new analogs for drug discovery knows the advantage of cutting out synthetic detours. Not only does this save reagents and solvent, it shaves weeks off R&D timelines. And after a few years of watching competitors run in circles rediscovering established intermediates, I’ve come to appreciate small, smart modifications that streamline the entire development process.

    Access to Trusted Sources Makes the Difference

    Chemists running real-world projects invest in products they can trust, and 4-Hydroxy-3,5-Dibromopyridine has earned its place. Sourcing from a reputable supplier who demonstrates clear batch controls and independent analytical confirmation builds assurance. From my perspective, suppliers that provide clear spectral matching, robust traceability, and user-friendly safety documentation win my repeat business. Too often, corners get cut in the rush to secure cheaper materials, but paying attention to the finer points results in reliable performance in the long haul.

    By focusing on a trusted supply chain, research labs avoid delays from failed syntheses or wasted hours tracking down ambiguous impurities. I’ve watched programs slow to a crawl from unexplained NMR contaminants, so I know how vital these assurances are as organizations scale new chemistry. When regulatory submission time rolls around, the ability to point directly to process traceability and supply chain transparency also removes a huge headache.

    Supporting Safer and More Efficient Research

    Health and safety considerations always have to follow the science, and pyridine derivatives like this one warrant careful handling. Still, the predictable physical properties and transparent hazard information of 4-Hydroxy-3,5-Dibromopyridine make work in the lab far safer. It’s classified as a non-volatile solid, with no aggressive fumes or unpredictable byproducts, which suits open-benchwork and scale-up just as well as small-batch synthesis.

    Protocols built around reliable compounds cut risk substantially. When students or junior researchers join a team, handing them a consistent material with well-established safety data creates a stronger foundation for teaching good laboratory technique. In my own mentoring experience, starting with straightforward reagents emphasizes methodical, careful experimentation over crisis management — an essential lesson for every aspiring chemist.

    Addressing Challenges and Seeking Better Solutions

    The chemistry world rarely stands still, and with each new project comes unique challenges. For all the strengths 4-Hydroxy-3,5-Dibromopyridine brings, procurement and cost management can trip up even well-funded labs. Even now, labs across the globe push for greener synthetic methods, lower waste streams, and improved atom economy. Brominated compounds face greater scrutiny in regions with tough environmental regulations. These challenges call for strong supply-chain partnerships and ongoing innovation in production.

    There’s no single answer to balancing these concerns, but it helps to set clear expectations. Labs that prioritize transparent sourcing, long-term storage data, and open dialogue with vendors set the bar higher. Collaborations with established chemical suppliers often uncover new packaging, reduced solvent packaging, or greener synthetic alternatives that keep projects moving while hitting sustainability targets. Personally, I think honest discussion between end users and suppliers keeps everyone accountable — cutting through marketing hype and keeping the industry’s focus on real results.

    Fostering Innovation with Versatile Chemistry

    Some compounds serve simply as pieces in a puzzle, and some shape the direction of an entire project. 4-Hydroxy-3,5-Dibromopyridine belongs in the second camp. Its consistent reactivity, multiple functional sites, and clean performance in cross-coupling reactions provide more than just convenience. They encourage bolder research directions since teams know they can trust each step of their synthetic plan. Personally, I’ve watched group meetings take on new momentum when researchers have confidence in their reagents — the discussion shifts from troubleshooting toward creative, boundary-pushing experimentation.

    Over the past decade, the pharmaceutical industry has pivoted hard toward more complex heterocycles and highly functionalized small molecules. As resistance mechanisms evolve, especially in infectious diseases and oncology, libraries of analogs based on pyridine derivatives keep fueling discovery. 4-Hydroxy-3,5-Dibromopyridine’s dual reactivity — both the hydroxy and the bromines — line up with these needs, supporting rapid analog synthesis and late-stage diversification. I’ve seen academic groups turn to this compound as a key building block in competitive grant proposals, since it gets the job done without the wasted effort of reinventing familiar chemistry.

    Insights from the Evolving Chemical Marketplace

    Markets evolve just as quickly as scientific research. In practice, advances in synthesis and purification have brought formerly niche compounds such as 4-Hydroxy-3,5-Dibromopyridine into wider availability. Researchers now benefit from shorter lead times, reliable delivery, and customized packaging options, which all support better project planning. From my own experience, this represents a dramatic improvement over the stress and expense of sourcing unreliable or back-ordered intermediates.

    Price fluctuations still pose a pain point, especially with volatility in global supply chains for precursors or regulatory bottlenecks. Careful tender management, strong relationships with suppliers, and broader participation in industry benchmarking all help laboratory buyers avoid unpleasant surprises at key project milestones. It’s not simply about being cheapest — it’s about reducing disruption and keeping the science moving.

    A Perspective from the Bench

    There’s real satisfaction in seeing a clean reaction, solid analytical data, and swift progress toward project goals. 4-Hydroxy-3,5-Dibromopyridine has delivered those results for countless teams across disciplines, whether in pharma, agrochem, or academic innovation. For synthetic chemists designing new molecular targets, it answers a practical need: access to both predictable transformation and the structural complexity needed for modern research challenges.

    Years in the lab taught me that shortcuts rarely pay off. Relying on reliable reagents and robust protocols doesn’t earn flashy headlines, but it creates the backbone of real discovery. Colleagues who have tried cutting corners with cheaper or unknown source materials learned the hard way: unreliable chemistry derails momentum and morale. Quality-controlled 4-Hydroxy-3,5-Dibromopyridine proves its worth with every reliable result, every clean NMR peak, and every successful reaction scale-up.

    Moving Forward: The Next Chapter in Heterocycle Chemistry

    Future breakthroughs — whether they happen in drug discovery, materials, or agriculture — will depend on the minutiae of modern organic synthesis. I see no sign that demand for flexible, reactive intermediates will slow; in fact, the race toward more intricate chemical space will deepen reliance on versatile building blocks like 4-Hydroxy-3,5-Dibromopyridine. As labs balance safety, regulatory compliance, and creativity, choosing reagents that support both practical work and innovative design remains critical.

    Looking ahead, advances may raise the bar on both sustainability and performance. If greener synthesis can be scaled up to maintain quality and purity, the chemistry community and environment both stand to benefit. In the meantime, informed buyers, transparent supply chains, and careful research design help ensure that this reliable compound continues to underpin discovery and progress in the field. For every researcher staring down the next synthetic challenge, access to solid, proven intermediates continues to pave the way — and 4-Hydroxy-3,5-Dibromopyridine stands ready for the journey.