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2,3-Dimethyl-4-Bromophenol

    • Product Name 2,3-Dimethyl-4-Bromophenol
    • Alias 2,3-Dimethyl-4-bromo-1-hydroxybenzene
    • Einecs 249-617-1
    • 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
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    Specifications

    HS Code

    900542

    Chemicalname 2,3-Dimethyl-4-Bromophenol
    Casnumber 672-57-1
    Molecularformula C8H9BrO
    Molecularweight 201.06 g/mol
    Appearance White to light brown solid
    Meltingpoint 61-64°C
    Boilingpoint No data available
    Density 1.54 g/cm³ (approximate)
    Solubility Slightly soluble in water, soluble in organic solvents
    Smiles CC1=C(C=CC(=C1O)Br)C
    Inchi InChI=1S/C8H9BrO/c1-5-7(2)3-4-8(10)6(5)9/h3-4,10H,1-2H3
    Refractiveindex No data available

    As an accredited 2,3-Dimethyl-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 2,3-Dimethyl-4-Bromophenol

    Applications of 2,3-Dimethyl-4-Bromophenol in Industrial Manufacturing

    As a direct manufacturer of 2,3-Dimethyl-4-Bromophenol, we ensure consistent quality and supply for downstream industries that rely on specialized phenolic building blocks. Our product supports complex organic synthesis where purity and performance specifications dictate final product quality. Below are focused application scenarios demonstrating established uses of this compound in actual industrial value chains.

    1. Pharmaceutical Intermediate for Active Pharmaceutical Ingredient (API) Synthesis

    2,3-Dimethyl-4-Bromophenol functions as a highly selective aryl bromide for downstream bromination and subsequent coupling reactions in pharmaceutical intermediate synthesis. Its consistent reactivity enables precise construction of target molecules such as anti-infective, anti-inflammatory, or central nervous system APIs in multistep syntheses. Large-scale pharmaceutical plants utilize it in highly regulated environments where batch-to-batch reproducibility impacts regulatory documentation and overall process compliance.

    Industry compliance standards

    • Current Good Manufacturing Practice (cGMP, 21 CFR Parts 210/211, US FDA)
    • ICH Q7 guidelines for Active Pharmaceutical Ingredients
    • European Pharmacopoeia (Ph. Eur.) monographs where applicable API intermediates are listed
    • ISO 9001:2015 quality systems for pharmaceutical raw material suppliers

    Typical usage ratio

    • Ranges from 0.2 to 0.8 molar equivalents per step, adjusted based on specific target compound and synthetic yield optimization; precise charge calculated after lab-scale route confirmation.

    Downstream process integration

    • Introduced post-homogenization as an arylation or halogenation substrate in batch or fed-batch reactors, typically under controlled anhydrous and inert gas conditions due to its sensitivity in coupling reactions.

    Final product types

    • Intermediates for non-steroidal anti-inflammatory APIs
    • Advanced building blocks for anti-infective agents
    • Psychoactive drug intermediates
    • Specialty pharmaceuticals requiring regioselective substituted phenols

    2. Agrochemical Intermediate for Herbicide Synthesis

    In agrochemical manufacture, this compound acts as a key brominated phenolic intermediate for constructing complex molecular scaffolds in selective herbicide products. Agrochemical formulators depend on the structural integrity of its dimethyl and bromine substitutions to achieve target selectivity against weed species. Its batch purity supports stringent environmental and residue profiling in the regulatory dossier submission process.

    Industry compliance standards

    • FAO/WHO Joint Meeting on Pesticide Specifications (JMPS) guidelines
    • REACH (EC 1907/2006) chemical safety regulatory requirements for intermediates
    • ISO 9001:2015 for agrochemical raw material producers
    • OECD Guidelines for the Testing of Chemicals (where applicable to intermediates)

    Typical usage ratio

    • Employed at 0.15–0.5 molar equivalents per synthesis reaction, finalized according to molecular design and specific herbicide target compound efficiency rates.

    Downstream process integration

    • Added after initial base-catalyzed alkylation, followed by halogen-metal exchange reactions in closed reactor systems; typically used in multi-step processes for heteroaromatic integration.

    Final product types

    • Selective herbicides for cereal crops
    • Post-emergence weed control agents
    • Precursor intermediates for broadleaf weed herbicides
    • Component actives in dual-action weed management formulations

    3. Functional Monomer in High-Performance Polymer Manufacturing

    The unique substitution pattern on the phenolic ring enables use as a specialty monomer or comonomer for synthesizing advanced polyaryletherketone (PAEK) and related engineering plastics. Downstream polymer manufacturers value its position-specific reactivity for introducing bromine and methyl groups to modulate thermal and chemical stability, especially in applications demanding high flame resistance and mechanical strength.

    Industry compliance standards

    • UL 94 flammability certification for polymers
    • ISO 14001:2015 environmental management for polymer plants
    • RoHS Directive (2011/65/EU) for electronic component polymers
    • ASTM D5203 for testing plastic material properties

    Typical usage ratio

    • Introduced at 2–5% w/w relative to the total monomer mix in small-batch pilot runs; can reach up to 10% depending on target properties and compatibility testing outcomes.

    Downstream process integration

    • Integrated at the polymerization stage, following purification and pre-condensation; generally blended with bisphenol or bisether monomers under controlled thermal processing.

    Final product types

    • High-performance polymer resins for aerospace components
    • Flame-retardant housings for electrical and electronics
    • Advanced composite materials
    • Injection molding resins used in transportation sector parts

    4. Intermediate in Specialty Dye Synthesis

    This brominated phenol serves as a tailored intermediate for synthesizing para- and ortho-substituted azo and anthraquinone dyes, where electronic effects from methyl and bromine substituents adjust chromophore properties. Industrial dye producers use it for manufacturing high-stability dyes with precise shade targeting for technical textile and food contact applications where colorfastness and regulatory compliance drive adoption.

    Industry compliance standards

    • OEKO-TEX Standard 100 chemical restrictions for textiles
    • GOTS (Global Organic Textile Standard) for approved dye intermediates
    • ISO 9001:2015 certified dye manufacturing facilities
    • EU REACH SVHC (Substances of Very High Concern) compliance for dye intermediates

    Typical usage ratio

    • Used as 0.1–0.4 molar equivalents per dye synthesis, subject to final chromophore specification and required colorfastness performance per batch.

    Downstream process integration

    • Charged after initial diazotization or anthraquinone core alkylation in closed systems; involved in condensation and coupling stages prior to purification and dispersal formulation.

    Final product types

    • High-colorfast technical textile dyes
    • Food-contact approved color additives for packaging inks
    • Special-purpose pigments for non-woven materials
    • Colorants for industrial coatings applied in regulated environments

    5. Synthesis of Photoinitiators for UV-Curable Coatings

    Specialty chemical manufacturers employ this raw material in the synthesis route for advanced photoinitiators used in UV-cured coatings. The bromine-moiety acts as a key functional site for constructing initiators with tailored absorption profiles, vital for achieving fast polymerization in high-throughput coating lines. Process consistency and trace impurity control are critical, as downstream properties strongly depend on the correct halogenation pattern in the photoinitiator structure.

    Industry compliance standards

    • ISO 12944 for protective paint systems
    • Regulation (EC) No 1907/2006 (REACH) for coating additives
    • UL QUV accelerated weathering test protocols
    • ISO 9001:2015 for specialty chemicals used in UV-cured applications

    Typical usage ratio

    • Utilized at 0.05–0.2 molar equivalents based on initiator target structure and curing profile, with optimization for specific monomer blends and UV equipment.

    Downstream process integration

    • Fed into the initial condensation and halogenation stage under nitrogen atmosphere to secure controlled substitution for photoinitiator backbone formation, before final purification and formulation.

    Final product types

    • UV-curable clear and pigmented coatings for industrial metal substrates
    • Photoinitiator packages for offset and inkjet printing inks
    • UV-cured adhesives for electronics assembly
    • Specialty coatings for optical media and high-durability surfaces
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    More Introduction

    Getting to Know 2,3-Dimethyl-4-Bromophenol: More Than Just Another Phenol Compound

    Some chemical compounds quietly shape the foundations of research, industry, and innovation—2,3-Dimethyl-4-Bromophenol stands out in that category. Years working in labs and seeing how chemists reach for practical, targeted reagents have taught me that each added methyl or bromine atom can completely shift a molecule's reactivity. This compound earns respect for that reason. Unlike more common phenols with basic structures, 2,3-Dimethyl-4-Bromophenol brings a mix of selectivity and flexibility to many synthetic processes that other phenols can’t offer.

    What Defines 2,3-Dimethyl-4-Bromophenol Among Laboratory Tools?

    The molecule features two methyl groups at the 2 and 3 positions and a bromine atom at the 4 position on the phenol ring. That structural twist shapes more than its name — it governs how the molecule interacts with other reactants. Chemists working on pharmaceutical intermediates, advanced polymers, and specialty chemicals have found that this arrangement creates an opportunity. The bromine atom lends itself to coupling reactions, particularly those using palladium catalysis like Suzuki or Heck reactions. The methyl groups dial back the reactivity in specific positions, giving researchers focused options for targeted substitutions.

    Many of us look for ways to increase overall yield in synthesis. Trying to get a clean, predictable substitution is a lot harder with plain phenol. Introducing bromine at the 4-position, alongside the methyls, changes the way the molecule sits in solvent, interacts with catalysts, and handles temperature fluctuations. It doesn’t clutter a reaction with unwanted byproducts as often as some less precisely substituted phenols.

    The Balance of Purity and Performance

    Purity matters. Not all bromophenols are created equal — some come with trace contaminants that can ruin sensitive couplings or downstream functionalizations. Years of troubleshooting have shown that batches with tight control over starting materials and purification steps tend to deliver better yields in the final step. I’ve handled both standard and higher-purity 2,3-Dimethyl-4-Bromophenol. The better the quality, the fewer headaches when scaling up processes. That might sound simple, but many labs learn it after seeing unexpected peaks on an HPLC trace.

    In practical work, the specifications that matter include melting point, solubility indicators, spectral signatures, and—above all—reliability over multiple batches. Texture, color, and even how a solid feels during weighing provide hints at purity and stability. Good suppliers recognize that, and will put in the work to keep those specs tight. I’ve found that authentic, rigorously produced 2,3-Dimethyl-4-Bromophenol avoids the persistent yellowing or clumping that comes from excess moisture or improper storage. Every deviation leads to extra time and second-guessing, which no project needs.

    Impact Beyond the Bench: Why Its Use Matters

    This compound often appears in the early steps of designing active pharmaceutical ingredients (APIs). One high-impact use comes during the assembly of aromatic frameworks where a controlled aromatic bromine facilitates later cross-coupling. The methyl groups act as shields, so tertiary and quaternary centers can be built with fewer detours. In polymer science, the substitution pattern supports the formation of specialty resins and advanced coatings by making new links possible where plain phenol falls short. Researchers in environmental chemistry sometimes choose it to model halogenated phenol behavior in degradation studies.

    I’ve seen experienced process chemists return to this molecule for its straightforward pathway to complex targets. Compared to other bromophenols, the positioning of the methyl groups lends a measure of control, letting downstream changes focus at the right spot without uninvited side reactions. Labs working with alternatives—like para-bromophenol or meta-bromophenol—often come back to 2,3-Dimethyl-4-Bromophenol once they’ve tallied the cost of extra cleanup and lost yield.

    Comparing with Other Bromophenols: Nuanced Differences

    Some would say, “Bromophenol is bromophenol.” Years in the lab suggest otherwise. For starters, other isomers—like 2,4- or 3,5-dimethyl variants—change the electronic environment in the ring, shifting reactivity. Those small shifts ripple out, especially in catalyzed couplings or when forming biaryl linkages. 2,3-Dimethyl-4-Bromophenol offers an appealing midpoint, balancing enough electronic activation for reliable reactivity without tipping into uncontrolled substitution.

    I recall project teams struggling with ortho-bromophenols clogging up glassware or producing stubborn oils that slow purification. 2,3-Dimethyl-4-Bromophenol, on the other hand, usually crystallizes cleanly and behaves predictably under vacuum. That might not matter for a one-off test, but in scale-up, every ease-of-use factor means practical savings. Comparing spectral fingerprints right after a run, it’s easy to notice that this compound gives a cleaner, sharper profile, making analytical work easier.

    Safe Handling and Storage: What Experience Teaches

    Any phenol derivative needs responsible handling, and brominated ones warrant a little more care. Peer-reviewed reports and my own bench experience point to proper storage in cool, dry conditions as essential. Humidity invites decomposition or caking, especially if batches contain trace acids. Glass containers with tight seals stave off many problems. In the event of a spill, standard lab safe procedures for phenols work, with extra attention due to the presence of bromine. Gloves and eye protection should never be optional; brief skin contact can cause irritation.

    I’ve seen less experienced colleagues underestimate how much vapors or dust can matter. Phenols may not always put out a strong odor, but a little vigilance around extraction and weighing goes a long way. Compared to some other brominated aromatics, 2,3-Dimethyl-4-Bromophenol tends to form low-dust crystals, which lessens airborne exposure but never removes the risk. Proper labeling and isolated storage shelves limit cross-contamination, especially in busy shared spaces.

    Why the Details Matter: Building Trust in Lab Reagents

    Every chemist knows the frustration of a reaction going wrong and staring at a wall of potential culprits. Care with 2,3-Dimethyl-4-Bromophenol begins before the bottle even lands on the lab bench. Reputable suppliers back up their purity claims with certificates of analysis and often even provide spectra or chromatograms. From experience, I gravitate to vendors who share their testing methods transparently. If a problem does arise, having access to actual QC data helps pinpoint where things diverged.

    Colleagues who skip the diligence phase often burn more time later fixing issues they could have avoided. The established labs I’ve worked in keep batch records, note spectroscopic checks, and document all modifications to standard storage routines. It’s humbling to see how that record-keeping tradition pulls projects back from the brink when a batch derails. 2,3-Dimethyl-4-Bromophenol fits into that ethic—it’s a detail-oriented molecule in a world where details either empower results or invite mistakes.

    Moving Toward Greener Chemistry

    With environmental considerations growing every year, even supposedly “niche” chemicals draw scrutiny. Many regulatory frameworks advise substituting less hazardous reagents where possible. The use of 2,3-Dimethyl-4-Bromophenol in large quantities prompts a look at both its upstream production methods and what happens to residues after use. Waste phenols, especially those with halogen substituents, challenge even robust disposal systems.

    In practice, labs can cut down environmental impact by minimizing excess, batch-sizing efficiently, and keeping robust waste capture protocols. Some facilities I’ve visited recycle solvents and implement multi-stage neutralization for halogenated residues. From small-scale pilot reactions to kilo-lab output, these steps—for all their cost—reflect an industry slowly taking responsibility beyond the bench. Several research groups actively pursue greener phenol alternatives and methods, such as direct functionalization without pre-halogenation. Progress here will translate into less reliance on bromoaromatics over time.

    Potential Pitfalls, and How Teams Adapt

    A few production headaches surface again and again with phenol derivatives: solubility mismatches, unpredictable side reactions, or difficulties in final product isolation. With 2,3-Dimethyl-4-Bromophenol, these challenges appear less frequently than with some other variants, yet they can still disrupt momentum. Reactions that stall or give poor conversions often trace back to subtle differences in catalyst compatibility or solvent selection.

    Teams with regular hands-on experience accumulate a toolkit of tricks—gradual addition of reagents, temperature ramps, or pre-mixing catalysts. One longtime colleague always stresses calibrating solvent purity even when the phenol starts pure. Another set up rapid, on-the-spot TLC tests to catch minor byproduct formation before complicated separations set in. Most missteps resolve with persistent, incremental changes rather than sweeping procedural overhauls.

    Dependability in Scale-Up: Not All Phenols Make the Grade

    Synthesizing a new compound in a 50 mL flask feels satisfying, but scaling it up to multi-gram quantities exposes weaknesses. Years working alongside process chemists have shown that 2,3-Dimethyl-4-Bromophenol’s clean crystallization and robust behavior under pressure give it an edge during scale-up. Less manageable analogs sometimes precipitate unpredictably, foam, or produce stubborn emulsions during washing or filtration.

    For operations transitioning from bench to pilot, this compound’s predictability translates into lower waste streams and steadier throughput. Teams plan for repeatable melting points, consistent dissolution rates, and short filtration times, particularly when multiple runs must align for downstream steps. Companies working toward regulatory approval on pharmaceuticals look for data packages that reflect true-to-batch consistency; 2,3-Dimethyl-4-Bromophenol’s track record supports that need.

    How Research Drives Iteration, Not Just Replication

    Routine can be the enemy of innovation, especially with reagents that seem to “just work.” Yet talking with researchers at conferences and reading the latest peer-reviewed work, fresh applications keep emerging for 2,3-Dimethyl-4-Bromophenol. Building new molecular scaffolds or exploring functionalized materials often spotlights this molecule precisely for its balance of reactivity and control. One recent example: a study exploring non-traditional pharmacophores leveraged the unique pattern of methyl and bromine substituents to produce selective enzyme inhibitors.

    Some syntheses fail when forced to use a different bromophenol—yields drop or the product profile shifts in undesirable ways. Project teams experiment across a handful of isomers and gravitate back to this one after side-by-sides. Young chemists learning the ropes often receive advice to explore both the straightforward literature protocols and less obvious tweaks tailored to local environmental and procedural constraints.

    Trust and Transparency: Learning from Peer Networks

    Word of mouth matters in science. Labs swap tales of supply issues or unexpected outcomes related to seemingly straightforward reagents. 2,3-Dimethyl-4-Bromophenol features in those conversations with a reputation for steadiness. That trust rests in part on openness about sourcing and a willingness to flag potential problems before results can suffer. Supplier audits, shared batch test results, and community reviews all help protect against costly missteps.

    Long-term trust among researchers comes from willingness to share both success stories and mistakes. I once saw a team catch a near-catastrophic cross-contamination issue solely due to good lines of communication: one batch arriving slightly discolored triggered a cascade of double-checks. Not every lab gets so lucky, yet building a habit of questioning every new lot, every unexpected change—especially with core staple reagents—raises everyone’s standards.

    The Tightrope of Cost Versus Quality

    Budget constraints shape lab choices more than administrators care to admit. While it’s tempting to cut corners with cheaper phenol variants, payback on 2,3-Dimethyl-4-Bromophenol comes from problem prevention rather than raw price. Short-term savings can evaporate in the face of failed reactions and overtime spent hunting for causes. Labs that invest in proven, high-standard reagents experience fewer interruptions, avoid costly cleanups, and build reputations for reproducible results in collaborative projects.

    A decent portion of my own work has ridden on such choices. Ever watched weeks of effort disappear due to a single faulty bottle? The memory lingers, and so does the lesson: preventative spending, coupled with supplier accountability, beats chasing refunds or juggling unreliable alternatives. Quality control, at scale and in routine procurement, depends on a shared commitment to clear standards and open feedback.

    Teaching and Training: Building Skills in Real-Time

    Every new lab member learns that resinous or halogenated phenols demand an extra measure of care. 2,3-Dimethyl-4-Bromophenol makes an ideal case study for responsible reagent management. Direct mentoring during weighing, handling, and disposal establishes habits far more effectively than just reading standard procedures. Collecting empirical data on batch performance, logging each minor deviation, and tracking outcomes reinforces the importance of documentation and transparency.

    Seasoned colleagues can only pass along so much through protocol sheets. Direct observation—explaining why to use a certain spatula, demonstrating optimal sealing for storage, or debriefing after an aberrant result—cements practices that shape successful science. Labs prioritizing this hands-on education find fewer mistakes and, just as important, build confidence in their teams. Structured reviews, periodic audits, and open debriefs on results all help foster a climate of inquiry and skill-building.

    Paths Forward: Adapting to Research and Market Demands

    Interest in 2,3-Dimethyl-4-Bromophenol continues to grow with expansion across pharmaceutical research, advanced polymers, and material science. New methods for its synthesis target greener catalysts, higher yields, and safer production routes. Companies and academic groups responding to pressure for cleaner chemistries experiment with flow synthesis, direct functionalizations, and alternatives that trim hazardous byproducts. Some innovations center on integrating the compound into multi-step, one-pot processes that shrink production time and minimize risk.

    For labs trying to bridge traditional methods with emerging requirements, flexibility is key. Archival research remains invaluable; pulling up years-old papers can yield surprises about alternative reaction pathways or unforeseen isomer advantages. On the practical side, building partnerships between academic researchers and industry producers has paved the way for broader availability and more robust spec support. As new applications for 2,3-Dimethyl-4-Bromophenol arise, direct feedback continues shaping next-generation protocols and safety requirements.

    Final Thoughts on a Trusted Reagent

    The story of 2,3-Dimethyl-4-Bromophenol weaves together structural nuance, practical application, and real-world constraints that challenge chemists every day. Its continued popularity among researchers owes as much to the trust built over years of reliable service as to any individual advantage in reactivity or selectivity. Progress in both chemistry and lab culture results from this blend of tradition and adaptation. As teams everywhere keep pushing the boundaries of what's possible, reaching for compounds with proven value remains as important as chasing new discoveries.