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3-Amino-4-Bromophenol

    • Product Name 3-Amino-4-Bromophenol
    • Alias 3-Amino-4-hydroxybromobenzene
    • Einecs 257-694-9
    • 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
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    Specifications

    HS Code

    567210

    Chemicalname 3-Amino-4-Bromophenol
    Molecularformula C6H6BrNO
    Molecularweight 188.02 g/mol
    Casnumber 121-56-4
    Appearance Light brown to beige solid
    Meltingpoint 149-153°C
    Boilingpoint 374.9°C at 760 mmHg
    Solubility Slightly soluble in water, soluble in organic solvents
    Density 1.841 g/cm3
    Purity Typically ≥98%
    Smiles C1=CC(=C(C=C1Br)N)O
    Inchi InChI=1S/C6H6BrNO/c7-4-1-2-5(8)6(9)3-4/h1-3,9H,8H2
    Synonyms 4-Bromo-3-aminophenol
    Storagetemperature 2-8°C
    Hazardclass Irritant

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

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    Application of 3-Amino-4-Bromophenol

    Applications of 3-Amino-4-Bromophenol in Industrial Manufacturing

    3-Amino-4-Bromophenol serves as a key intermediate in several specialty chemical sectors, supporting manufacturers in the production of dyes, pharmaceuticals, agrochemicals, and advanced polymer materials. Our experience and direct process integration ensure this material consistently meets use-specific requirements across these industries.

    1. Synthesis of Dyestuff Intermediates for Textile Colorants

    Manufacturers use 3-Amino-4-Bromophenol in the diazotization and coupling stages to form high-performance azo and anthraquinone dyes. Its roles as a substituent enable direct introduction into reactive and disperse dyes, targeting precise coloration, wash-fastness, and light-fastness for polyester and synthetic fiber applications. Plant QC teams monitor amine and bromine purity to reduce shade variation during continuous production.

    Industry compliance standards

    • OEKO-TEX® Standard 100 (restricted substance list for dyes)
    • ZDHC MRSL V3.1 (Zero Discharge of Hazardous Chemicals)
    • REACH EU Regulation No 1907/2006 (registration under dye intermediates category)
    • ISO 9001:2015 process management

    Typical usage ratio

    • 10%–25% by weight in the aromatic amino component batch depending on dye type—adjusted for coupling partner and target shade intensity

    Downstream process integration

    • Charged to synthesis reactor after neutralization or sulfonation steps
    • Reacted under controlled pH and temperature for color body formation
    • Introduced as intermediate for calixarene and phthalimide series

    Final product types

    • Reactive dyes for cotton and cellulosic fibers
    • Disperse dyes for polyester and acetate yarns
    • Specialty pigments for plastics coloration
    • High-fastness textile inks

    2. Active Pharmaceutical Ingredient Intermediate

    In pharmaceutical synthesis, chemists utilize 3-Amino-4-Bromophenol for constructing specific aromatic rings present in antibacterials and CNS-active compounds. It undergoes carefully staged coupling with heterocyclic cores under GMP conditions, as substituents directly impact target molecule bioactivity. In multi-step synthesis, raw material traceability and impurity profiling remain critical for DMF and ANDA submissions.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practices for API
    • 21 CFR Part 211 (US FDA cGMP for finished pharmaceuticals)
    • Chinese Pharmacopoeia and EP (as intermediate registration)
    • ISO 14001 for environmental management during synthesis

    Typical usage ratio

    • 1.5:1 to 2:1 molar ratio with core heterocyclic structure, batch process adjusted in pilot validation

    Downstream process integration

    • Introduced post-halogenation as coupling partner in closed system reactors
    • Processed via catalytic amination or Suzuki-Miyaura cross-coupling
    • Purified by crystallization or preparative HPLC for regulatory compliance

    Final product types

    • Quinolone-based antibacterials intermediates
    • Benzoxazine ring system drugs
    • Specialty CNS active molecule precursors
    • Small molecule APIs under clinical trial

    3. Building Block in Agrochemical Synthesis

    Agrochemical producers use 3-Amino-4-Bromophenol as a halogenated amino phenol scaffold in herbicide and fungicide actives development. Its unique substitution allows for targeted derivatization, supporting SAR optimization and improved field performance, especially in brominated phenolic biocides and protecting groups for selective crop applications. Regulatory dossiers require in-depth characterization and residue control from the intermediate stages onward.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • US EPA FIFRA 40 CFR (for pesticide intermediates registration)
    • REACH intermediates dossier (Annex VII)
    • ISO 17025 for accredited in-process QC

    Typical usage ratio

    • 0.5%–4% of total synthetic batch, optimized based on molecule's biological group requirements

    Downstream process integration

    • Charged during early-stage aromatic core construction
    • Subjected to chlorine substitution or etherification
    • Used as a masked amino group in multi-stage protection-deprotection cascades

    Final product types

    • Phenolic-based fungicides
    • Haloaromatic herbicide intermediates
    • Crop-protection adjuvant ingredients
    • Precursor molecules for seed coating actives

    4. Raw Material for High-Performance Polymer Additives

    The specialty polymer sector integrates 3-Amino-4-Bromophenol in the custom synthesis of UV-absorbers, antioxidant systems, and chain terminators for engineering plastics. The aromatic bromine and amino functionalities improve compatibility in high-molecular-weight polycondensates and boost additive dispersion. Industrial QC focuses on bromine content uniformity and avoidance of unreacted phenols that can impair polymer performance properties or safety certifications.

    Industry compliance standards

    • UL 94 (flammability standards for plastics)
    • RoHS Directive 2011/65/EU (for electrical/electronic device safety)
    • EN 71-3 (chemical migration for toy safety, relevant for colorant additives)
    • ISO 17025 traceable QC for additive blends

    Typical usage ratio

    • 0.1%–2.5% by total additive package in the masterbatch formulation, tailored to polymer type and end-use exposure

    Downstream process integration

    • Premixed with antioxidant blend during extrusion
    • Participates as nucleating agent in compounding lines
    • Enters condensation polymerization as functional end-group source

    Final product types

    • UV-stabilized polycarbonates
    • Antioxidant-enhanced polyesters
    • High-strength copolymer films
    • Electronics-grade engineering plastics
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    Certification & Compliance
    More Introduction

    Get to Know 3-Amino-4-Bromophenol: A Smart Choice for Chemical Synthesis

    What Sets 3-Amino-4-Bromophenol Apart in Modern Laboratories

    Working with specialty chemicals, I see more than just bottles on a shelf. Each compound tells its own story and brings real value to the bench. 3-Amino-4-Bromophenol has made its way to the center of attention in many R&D departments. Through personal experience and many conversations with seasoned chemists, I’ve seen how this compound offers the right balance of reactivity and selectivity for those looking to build more complex molecules.

    Chemists often deal with various substituted phenols and anilines. What makes this one distinct lies in its smart substitution pattern: the amino group at the 3 position and the bromine at position 4 on the phenol ring. This specific layout creates a solid platform for targeted reactions, opening doors to a wider scope of downstream transformation. Unlike simple amino phenols or unsubstituted bromophenols, this compound delivers more versatility for both academic and commercial labs, especially in pharmaceuticals, agrochemicals, and materials science.

    Real-World Impact in Research and Development

    I often see requests for building blocks in medicinal chemistry projects. 3-Amino-4-Bromophenol regularly pops up in those conversations. Its value shows most during the early stages of drug discovery, when project chemists want to introduce diverse functional groups to explore biological activity. The presence of both an activating amino group and a reactive bromine on the same aromatic ring allows for selective reactions, such as Suzuki couplings and Buchwald-Hartwig aminations. Compared to mono-substituted phenols or bromoanilines, this compound offers more creative routes and a higher success rate in these pivotal functionalization steps.

    Colleagues in API development often share their results, describing how tricky it can be to find reliable building blocks for kinase inhibitors or anti-infective agents. 3-Amino-4-Bromophenol’s structure fits this need. Including both nucleophilic and electrophilic sites, it lets chemists add complexity in fewer steps. This translates to more efficient screening campaigns, less time at the bench, and a smoother scale-up process. Some even note that using this compound early on helps dodge future synthetic roadblocks, keeping projects on schedule and within budget.

    How Physical Characteristics Influence Reaction Outcomes

    Not all chemicals fit easily into daily workflows. Certain solids clump or degrade; some don’t dissolve where you want them to, wasting precious time. 3-Amino-4-Bromophenol offers dependable stability under normal storage conditions. Over several projects, I’ve observed it stays free-flowing and handles well, which matters for anyone measuring out batches or scaling up for pilot production. Its bright color and sharp melting range help with purity checks. You know right away if something has changed. For those running large batch syntheses, this predictability means safer storage and less product loss.

    Physical form can impact measurable things like solubility and reaction time. In my own testing, this product has shown versatile solvent compatibility—a trait that encourages creative reaction design. Whether you are running transformations in polar solvents or mixing for organic extractions, having a consistent compound reduces unexpected results and repeat experiments. That saves both materials and frustration over time.

    Safety, Handling, and Real-World Lab Practices

    Dealing with aromatic amines and brominated compounds calls for real-world caution. Like with most chemicals in its class, you need the usual protective gear: gloves, goggles, a solid ventilation setup. I like how 3-Amino-4-Bromophenol doesn’t drift as dust or fume under normal handling. This minimizes direct exposure and keeps surfaces cleaner—a key factor, especially in crowded communal labs.

    The compound’s shelf-life is another thing that sets it apart. Over time, I’ve monitored unopened samples and find they hold up well, with little sign of discoloration or byproduct formation. That’s reassuring for supply chain managers and end-users alike. It lets teams stock up with less risk of waste, knowing the material won’t disappoint after months of storage.

    Clear Advantages Over Other Substituted Phenols

    Some might ask why not use simple p-bromophenol or 3-aminophenol. I have tried both and have seen that neither fills the same niche. Simple bromo compounds can lack the nucleophilicity needed for certain cross-coupling steps. I’ve experienced poor yields and more side products when pushing those reactions. On the other hand, basic o- or m-aminophenols are harder to fine-tune for downstream modifications, often showing uncontrolled reactivity in multi-step sequences.

    The dual handle on this molecule—the easy-to-functionalize amino and the reactive bromine—supports a broader range of coupling strategies. Chemists in the field can confirm this point. It makes planning retrosynthetic routes more inviting, leading to higher-frequency project success and fewer false starts. In industry, where budget and time hold the highest value, this flexibility earns real admiration.

    Supporting Sustainability and Responsible Sourcing

    Sustainability matters more each year. Many labs I know now look for chemicals that support greener methods, seeking out batches made with less waste or cleaner reagents. I pay close attention to sourcing and quality assurance when recommending suppliers. Labs using this compound report that most reputable vendors commit to good manufacturing standards, thorough purity testing, and clear documentation. These practices align with the growing demand for transparency, helping to assure both safety and compliance down the chain.

    Waste management also features in purchasing decisions. When working with halogenated aromatics, disposal rules can add stress and cost. Fortunately, this product’s stable nature and predictable performance mean less expired inventory and fewer hazardous disposal events. That helps keep workflows both lean and more environmentally minded.

    Reliable Performance Across Sectors

    Pharmaceutical chemists aren’t the only ones who take an interest. 3-Amino-4-Bromophenol has carved out a place in agricultural research and specialty polymers as well. Colleagues working in these areas have told me about success stories—introducing this compound during early screening of herbicide candidates or innovating new color-fast dyes for textiles. In each sector, teams look for compounds that install reactivity without unwanted side effects. This phenol serves as a powerful tool, providing options that simpler derivatives just can’t match.

    I’ve followed several case studies where research teams used this molecule as a building block for introducing new heterocycles or adding fluorinated groups. It stood out because it let them access unique molecular shapes in fewer steps. More efficient chemical routes mean fewer resources spent, which helps keep production scalable and costs contained. In a research culture squeezed by deadlines and competition, that edge doesn’t go unnoticed.

    Potential Solutions and Continued Improvement

    No product comes without room for growth. Input from labs and industrial buyers helps shape future offerings. Throughout my work with vendors and supply chain managers, I’ve noticed more focus on fine-tuning particle size and crystal morphology. These changes can further improve solubility and filterability, especially in high-throughput operations. Some producers have started offering graded batches tailored for chromatography-heavy settings or for integration with automated synthesis equipment—something that should help even small startups keep pace with larger teams.

    Quality assurance remains an industry-wide project. The best results come from lots with full traceability, independent purity verification, and regular stability retesting. Labs benefit from direct lines with suppliers willing to share records and resolve questions without delay. Though bigger name vendors have usually led the charge here, smaller specialty suppliers now pay more attention to these targets as well. As a result, users have more reliable options for their next project, whether it’s a molecular discovery or a scale-up for preclinical validation.

    The Role of 3-Amino-4-Bromophenol in Accelerating Discovery

    As a chemist, I get excited about compounds like this not just for their technical utility but for the creativity they spark. With both the amino and bromine groups present, it’s possible to imagine entirely new routes and reaction types. Peers in my network have used 3-Amino-4-Bromophenol as the stepping stone for novel scaffolds in medicinal chemistry, while others apply it as a cornerstone in peptide modifications or dye chemistry. I enjoy seeing this kind of versatility because it puts more control in the hands of synthetic chemists—a real boost for innovation.

    Quick and reliable synthetic access often means more experiments and faster publications. That edge matters when teams compete for grants or move toward patents. With this compound, groups can leapfrog routine hurdles that come with less adaptable starting materials. The experience I’ve gained and feedback from collaborators all point to a reality: the right building block often sets off a string of successful discoveries, making resource allocation more efficient at every stage.

    What Users Value Most: Practical Takeaways

    The day-to-day reality of lab work demands more than impressive molecular diagrams. Time is often short and resources limited. I talk to postdocs, research assistants, and principal investigators facing pressure to deliver clean results and solid progress. They need building blocks that cut through unpredictable chemistry without introducing contamination or excess waste. In my own projects, 3-Amino-4-Bromophenol has offered that stability. Its dual-reactivity gives chemists greater flexibility with fewer reaction steps, helping teams meet targets and reduce costs.

    Researchers also look for support from their suppliers—timely certificates of analysis, transparent sourcing, and open lines for technical guidance. As the chemistry field moves toward automation and data-driven optimization, the reliability of core reagents becomes even more important. This compound’s track record for consistency makes it a candidate for routine experimentation, without the usual trial-and-error headaches.

    Peer Insights and Future Directions

    No one works in a vacuum anymore. Labs share protocols, publish reaction conditions, and openly discuss stumbling blocks. I’ve watched 3-Amino-4-Bromophenol appear more in patents, conference talks, and peer-reviewed journals each year. The collective wisdom shared by users—from start-up research teams to established pharma companies—points to a growing academic and commercial toolkit centered around this structure.

    A few forward-looking teams now explore greener syntheses and conversion techniques using milder conditions and catalytic cycles. These conversations mirror a wider push throughout the sector to combine performance with responsibility. By collaborating and pooling resources, researchers unlock more potential from tried-and-true chemicals, keeping the community a step ahead in both safety and innovation.

    Key Distinctions: How 3-Amino-4-Bromophenol Stands Out

    The true value of this product isn’t hidden in obscure technicalities but in everyday lab outcomes. Its specific arrangement of functional groups enables a wide variety of couplings, aromatic substitutions, and ring-building processes. Where plain bromophenols might fail to yield or produce too many byproducts, and simple aminophenols may react too broadly, the combined substitution of 3-Amino-4-Bromophenol lands in a practical sweet spot.

    Over the years, I’ve witnessed this compound quietly enable new chemistries and help resolve stubborn synthetic puzzles. It lets teams try bolder synthetic plans, encourages iterative design, and gets projects moving again where other building blocks might stall. In that way, it’s become part of the unspoken toolkit for chemists who value both creativity and reliability.

    Conclusion: A Building Block That Keeps Chemistry Moving Forward

    Looking at what matters—real-world performance, tested flexibility, and supplier transparency—3-Amino-4-Bromophenol holds up under pressure. It has supported both routine and breakthrough discoveries in medicinal chemistry, materials research, and agricultural science. For researchers needing to push boundaries while keeping workflow smooth and manageable, this compound represents the kind of thoughtfully engineered building block that speeds up not just individual reactions, but the pace of progress in the field as a whole.