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1-Bromo-3-Methyl-2-Butanone

    • Product Name 1-Bromo-3-Methyl-2-Butanone
    • Alias 3-Bromo-2-acetylpropane
    • Einecs 629-817-6
    • 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
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    Specifications

    HS Code

    324039

    Iupac Name 1-Bromo-3-methylbutan-2-one
    Molecular Formula C5H9BrO
    Molecular Weight 165.03 g/mol
    Cas Number 40918-19-8
    Appearance Colorless to pale yellow liquid
    Boiling Point 63-65°C at 16 mmHg
    Density 1.36 g/cm³
    Melting Point -10°C (approximate)
    Refractive Index 1.480-1.485
    Solubility In Water Slightly soluble
    Smiles CC(C)C(=O)CBr
    Inchi InChI=1S/C5H9BrO/c1-4(2)5(7)3-6/h4H,3H2,1-2H3
    Flash Point 72°C
    Purity Typically ≥ 98%
    Storage Conditions Store in a cool, dry, and well-ventilated place

    As an accredited 1-Bromo-3-Methyl-2-Butanone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

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    Application of 1-Bromo-3-Methyl-2-Butanone

    Applications of 1-Bromo-3-Methyl-2-Butanone in Industrial Manufacturing

    As the direct manufacturer of 1-Bromo-3-Methyl-2-Butanone, we work closely with global industrial partners across specialized downstream sectors that rely on this compound for targeted functional transformations in advanced synthesis. Our focus is supplying a consistently high-purity material that supports strict regulatory compliance and process reliability within each sector. Below we outline the primary industrial fields and detailed application contexts where our product is deployed.

    1. Pharmaceutical Intermediate Synthesis for Active Pharmaceutical Ingredients (APIs)

    Pharmaceutical manufacturers employ 1-Bromo-3-Methyl-2-Butanone as a key structural building block in the synthesis of β-keto derivatives and heterocyclic scaffolds, facilitating site-selective alkylation and bromination in multi-step API routes. This material enters critical stages where its unique reactivity directly determines yield and impurity control, especially for specialty CNS and anti-infective macromolecules. Consistent batch reproducibility is essential due to subsequent API registration requirements and QP oversight.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 211 (cGMP for finished pharmaceuticals)
    • European Pharmacopoeia (Ph. Eur.) standards for starting materials
    • REACH (EC) No 1907/2006 for chemical safety

    Typical usage ratio

    • 8–15% w/w of total reactant mass, depending on desired yield and target intermediate structure; adjusted during scale-up based on substrate stoichiometry and impurity profiling.

    Downstream process integration

    • Charged during the early stages of consecutive alkylation, condensation, or ring closure reactions in multi-step batch or flow synthesis lines for regulated intermediates; supported by in-process QC sampling and full batch documentation for traceability.

    Final product types

    • Small molecule active pharmaceutical ingredients such as CNS modulators, antiviral compounds, and β-diketones deployed in finished prescription drugs.

    2. Agrochemical Intermediate Manufacturing

    Major agrochemical producers use 1-Bromo-3-Methyl-2-Butanone in pipeline projects and commercial production for the synthesis of specialty herbicide and fungicide actives containing bromo-substituted alkyl moieties. Its introduction occurs at a key stage for constructing highly branched, selective-activity molecules, especially in routes focused on resistance management and metabolic pathway inhibition. Reliable purity minimizes autocatalytic side reactions in catalyst-sensitive stages.

    Industry compliance standards

    • FAO/WHO Specification Guidelines on Technical Grade Pesticides
    • CROP LIFE International manufacturing best practices
    • ISO 9001:2015 Quality Management Systems
    • OECD Guidance for Industry Data Submissions (for chemical safety dossiers)

    Typical usage ratio

    • 5–12% by mass of formulation, with precise tuning per target herbicide or fungicide structure and yield optimization studies.

    Downstream process integration

    • Reacted in controlled addition during alkylation or bromination steps prior to cyclization, producing advanced intermediates for subsequent chemical diversification; handled in closed reactor systems to minimize emissions and exposure per best practice guidelines.

    Final product types

    • Bromoalkyl-functionalized actives for selective weed control (herbicides) and fungicidal crop protection agents used in both pre- and post-emergent agricultural formulations.

    3. Synthesis of Performance Chemicals for Polymer Modification

    Polymer modification and specialty chemical manufacturers employ this compound as an alkylating and brominating agent to tailor-make functionalized oligomers and cross-linkers. Its high selectivity in introducing masked carbonyl and bromo-character enables the downstream creation of tailored resin, elastomer, and adhesive product families with enhanced chemical resistance or reactivity toward nucleophiles. Controlled addition supports batch reproducibility critical for industrial-scale blending.

    Industry compliance standards

    • ISO 14001:2015 Environmental Management Systems
    • ASTM D2563 for chemical admixtures (where applicable)
    • Regulatory limits for residual monomers as per customer application
    • EU REACH SVHC and CLP compliance for hazardous intermediates

    Typical usage ratio

    • 3–8% w/w addition, calculated based on the degree of functionalization required in final polymer architecture; composition verified through titrimetric or GC/MS quantitation.

    Downstream process integration

    • Fed into reactor after pre-polymer or co-monomer charging during controlled low-temperature stages; followed by thermal processing, neutralization, and removal of residuals with vacuum stripping.

    Final product types

    • Specialty resins, functionalized elastomers, two-component adhesives, and polymeric cross-linkers for industrial coatings and composites.

    4. Fine Chemical Ingredients for Fragrance and Flavor Synthesis

    Specialty fine chemical producers utilize this bromomethyl ketone compound as a functional precursor for complex lactone and ester synthesis in high-value flavor and fragrance molecules. The raw material's structure enables selective transformation into branched, aromatic components suitable for downstream use in compounded formulas and natural-identical substances. Its batch consistency supports reproducible organoleptic evaluation and upholds finished mixture uniformity requirements across manufacturing runs.

    Industry compliance standards

    • IFRA (International Fragrance Association) Code of Practice
    • US FDA 21 CFR 172 (Direct Food Additives: Flavoring Agents)
    • ISO 9001:2015 for documented quality workflows
    • Regulation (EC) No 1334/2008 on flavorings and certain food ingredients

    Typical usage ratio

    • Generally 1–3% by molar proportion in targeted transformations to minimize off-odor byproducts; specifics set by route optimization and sensory threshold studies.

    Downstream process integration

    • Introduced as the primary alkylating agent during early-stage aldol condensation or esterification in batch or semi-batch reactors; followed by chromatographic fractionation and organoleptic QC on isolate fractions.

    Final product types

    • Fine aroma chemicals, natural-identical flavor ingredients, lactone intermediates, and specialty esters used in finished perfumes and processed food essence blends.

    5. Specialty Laboratory Reagent Formulation

    Chemical reagent suppliers formulate analytical kits and research-grade products incorporating this compound as a specific-site alkylating or derivatization reagent, valued for its ability to introduce unique bromoalkyl groups in organic synthesis and molecular labeling protocols. Purity levels and batch traceability documentation align with laboratory verification standards to support reproducibility in academic and corporate R&D programs.

    Industry compliance standards

    • ISO 17034:2016 General requirements for the competence of reference material producers
    • OECD Good Laboratory Practice (GLP) principles
    • US EPA Test Guidelines (where used in analytical reference kits)
    • Documentation for Certificate of Analysis (CoA) traceability

    Typical usage ratio

    • Ranging from 0.2 to 5% by total reaction mix, based on sensitivity and target labeling degree; fine-tuned in method validation and calibration processes.

    Downstream process integration

    • Dosed as a derivatizing agent during sample preparation, or as a site-specific reactant in synthetic sequence calibrations; monitored with reference standards for purity verification and stability studies.

    Final product types

    • Analytical derivatization reagents, chemical labeling agents, and custom synthetics packaged in laboratory-scale research kits for chromatography, mass spectrometry, or chemical biology protocols.
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    More Introduction

    Understanding 1-Bromo-3-Methyl-2-Butanone: More Than a Chemical Name

    Spotting 1-Bromo-3-Methyl-2-Butanone in a laboratory catalog or research paper might prompt a curious look. The name itself feels almost like a tongue twister, but this compound fits squarely in the toolbox of chemists and professionals in the flavor, fragrance, and pharmaceutical arenas. I’ve spent plenty of time paging through chemical catalogs and working alongside researchers chasing both breakthroughs and routine formulations. From all those hours, I’ve learned how certain reagents can end up anchoring entire processes. This compound may sound specialized, but it quietly shapes real progress behind lab doors. 

    What Makes 1-Bromo-3-Methyl-2-Butanone Stand Out

    Think of 1-Bromo-3-Methyl-2-Butanone as a branched ketone with a bromo functional group. Having spent years working on synthetic routes for small molecules, I know just how valuable a reliable building block can be. Here, the merged presence of a methyl group and a bromine atom on the backbone of a compact ketone sets it apart from the sea of similar compounds. 

    Most labs seek out specific chemical features that change how a reaction unfolds. Bromine, sitting on that secondary carbon, brings reactivity that cannot come from many other halogens. I’ve seen plenty of ketones, but add a bromine atom, and suddenly you open new doors—especially when exploring cross-coupling chemistries or nifty rearrangements. The methyl group does more than puff up the name; it nudges the reactivity, shifts selectivity, and often makes downstream transformations easier or more predictable. The choices scientists make about which functional groups to introduce are rarely random; each atom echoes through both benchwork and commercial production lines. 

    Model and Specifications: Where Precision Meets Practical Needs

    People in the trenches of chemical synthesis often ask not only what a product does, but how well it performs batch after batch. Typically, 1-Bromo-3-Methyl-2-Butanone appears as a clear liquid, and its purity makes all the difference. Analytical labs set the bar high, expecting at least 98% purity for reliable results, though optimized processes sometimes demand even fewer impurities left behind. 

    The boiling point sits near 140°C under normal conditions, and it lends a manageable volatility—not too stubborn, not overly eager to escape the flask. Density hovers close to 1.32 grams per cubic centimeter, and in my experience, that extra mass helps with separation after reactions, making workups less tedious. Many researchers will quietly rejoice when a reagent’s handling profile reduces messes and bottlenecks.

    As for storage, it keeps best away from light and moisture, something I learned the hard way after a bottle turned yellow on a top shelf. Shelf life often draws little attention until you have to replace reagents before a project wraps up. But stored properly in a sturdy amber vessel, the compound remains stable long enough for even slow-moving campaigns.

    Usage in Research, Industry, and Beyond

    Most people outside a laboratory might never touch 1-Bromo-3-Methyl-2-Butanone, but its reach spreads further than you’d expect. I remember a conversation with a chemist who explained its role in building complex organic molecules, where that bromine atom turns into a molecular gateway. Because the bromo group skips past many roadblocks found with chloride or fluoride analogs, reactions often run faster and with fewer by-products. Pharmaceutical teams can use it as a precursor, especially when making intermediates for active pharmaceutical ingredients—the kind found in treatments for everyday ailments and rare diseases alike.

    Flavor and fragrance specialists also lean on it, sometimes to unlock new aroma profiles by combining it with other building blocks. In my observations, they value the reactivity without having to manage highly volatile or corrosive substitutes. A little stability goes a long way in maintaining batch-to-batch consistency, especially when a subtle difference in scent can make or break a product line.

    One place where this compound steps aside is in fields where either environmental or workspace regulations strictly limit halogens, or when a process needs a less reactive backbone. In those niches, inventors reach instead for specialized, non-halogenated ketones. Still, for general synthesis involving short carbon chains and targeted modifications, 1-Bromo-3-Methyl-2-Butanone keeps showing up on reagent shelves for a reason—it works, and it does so cleanly without stubborn side reactions gumming up the process.

    Comparing with Other Ketones: Finding the Tool That Fits

    If you know your way around a laboratory or pilot plant, you’ll notice real differences between this molecule and generic ketones such as acetone or methyl ethyl ketone. While those classics routinely clean glassware or serve as solvents, 1-Bromo-3-Methyl-2-Butanone claims a different sort of utility. The bromine atom brings more than just complexity. It opens up synthetic options. In coupling reactions or even simple nucleophilic substitutions, that leaving group facilitates transformations you can barely attempt with a plain vanilla ketone.

    I have seen projects that would otherwise stall because a required step demands more than just a carbonyl group. With 1-Bromo-3-Methyl-2-Butanone, chemists can craft routes with higher specificity, keep yields more predictable, and sometimes shave off entire steps that older reagents required. Marketers might pitch this as trendsetting, but most working chemists lean towards the practical: time saved, yields protected, and fewer surprises at the analytical bench.

    Why Precision and Purity Matter

    Experience teaches that unchecked impurities turn routine synthesis into a guessing game. 1-Bromo-3-Methyl-2-Butanone’s clean profile means you know exactly what’s going into each flask. This is especially important in fields like pharmaceutical research, where regulatory scrutiny goes beyond simple function—in some cases, a single impurity might derail months of progress. Standards aren’t just paperwork. They shape what products reach patients or consumers.

    Even in less regulated sectors, consistency makes a difference. Flavor houses and specialty manufacturers lose less material, dodge fewer repeat tests, and ship final products faster when their reagents perform the same way every time. Buyers and users have long memories; a batch that fails to deliver leaves a mark much deeper than a line in a ledger.

    Responsible Handling and Sustainability in Practice

    These days, talking about synthetic chemicals means talking about safety and sustainability. I’ve watched labs turn away from historically useful reagents because waste disposal or worker exposure weighed too heavily on budgets or conscience. 1-Bromo-3-Methyl-2-Butanone, in the quantities usually ordered, doesn’t raise the red flags seen with bulkier, more hazardous materials, but even small volumes demand proper care. My own routines—working in a vented hood, cataloging every vessel, labeling containers—come from more than just a rulebook; accidents and bad surprises cut into progress far more than any extra steps would.

    Waste handling often poses a challenge. While concentrated disposal systems handle the bromo content adequately, even trace residues matter. Forward-looking teams and environmental officers tend now to look for greener synthesis using milder reagents or designing processes that recycle halogenated by-products. Over the past decade, this shift has become less a trend and more a baseline expectation. If I were advising a new research group, I’d urge them to plan waste minimization strategies before even ordering that first bottle.

    Lessons from Practical Experience: Avoiding Common Pitfalls

    Working hands-on with this compound, I’ve found that its moderate volatility saves solvents but doesn’t let you shortcut vented operations. Any spill or careless venting brings an odor and potential exposure that you do not ignore a second time. Predictable reactivity also compels careful planning. That bromine leaves clean, but run a reaction too hot, and you’ll chase after side products as wild as any aromatic bromide. Those lessons lived and learned mean that crew members double-check glassware and watch reaction temperatures with real diligence. The compound rewards patience and penalizes haste.

    Ordering just the amount needed is a best practice, both for safety and economy. Synthetic routes benefit most when the product stays fresh, and excess storage can invite degradation or contamination. Some suppliers have started offering scaled bottles, recognizing that small-scale labs need flexibility as much as a bulk buyer does. This nudge towards smart inventory pays off in time, safety, and quality—straightforward yet easily overlooked by new labs getting their footing.

    Room for Improvement and New Solutions

    Despite its impressive track record, every reagent faces the pressure to evolve. Colleagues in green chemistry consistently look for less hazardous alternatives or tweaks in production that cut waste or shrink the energy footprint. Research into new synthetic pathways sometimes roots out that bromine entirely, swapping it for groups that break down cleanly in the environment after their job is done. It’s not just a compliance box to tick; major clients and regulatory authorities increasingly expect robust sustainability stories alongside traditional performance claims.

    Producers could step up by supporting take-back or recycling programs for spent chemicals, especially for those with halogen content. This echoes through the supply chain as labs map out new compliance requirements or corporate sustainability goals. Sharing data openly on environmental fate and exposure scenarios, not just hazard maps or technical sheets, would empower end users to make informed choices. I’ve seen the transparency trend reshape supplier relationships—labs rewarding manufacturers who back up performance with real stewardship and honest communication.

    Insights on Market Value and R&D

    The true value of 1-Bromo-3-Methyl-2-Butanone traces back to its flexibility in synthesis. Teams juggling tight R&D budgets prize compounds that let them pivot quickly between targets or tweak intermediates without recalibrating every protocol from scratch. I’ve witnessed research groups put aside more expensive or “greener” options after a few pilot tests confirmed this reagent delivered consistently at scale. Time, yield, reliability—these always count as much as price at the end of a research quarter.

    Yet shifting market demands also push for new production techniques. Cost pressures and raw material volatility mean the best suppliers rethink recipes to squeeze efficiency from every batch. The pandemic era underscored just how fragile some specialty chemical supply chains could be; having well-understood, robust feedstocks like this ketone allowed some manufacturers to keep production lines open while competitors scrambled for substitutes. That lived experience cements loyalty to proven molecules and highlights the risk inherent in trendy but under-tested replacements.

    Teamwork, Expertise, and the Personal Touch

    I’ve always found that the real impact of a reagent depends less on its datasheet than on the judgement and skill of those putting it to work. At every step, someone chooses how much to scale, which purity to buy, or when to try something new. Educators and mentors stress careful technique, but culture counts too. Labs where feedback travels quickly, mistakes get shared, and successful routines get codified tend to draw the bright minds that turn compounds like 1-Bromo-3-Methyl-2-Butanone into catalysts for bigger results.

    Newcomers sometimes worry that chemistry will go digital and push aside hands-on skill. Yet, every encounter with a “smart” synthetic plan or AI-driven route re-affirms the need for real experience. Tiny differences in how this molecule behaves with specific bases, acids, or solvents can mean the difference between breakthrough and bottleneck. Stories from colleagues—both successes and failures—fill the gaps in literature. The most valuable database can’t replace a quick chat over a cup of coffee after a missed milestone leads to questions about a stubborn bromo-ketone residue.

    The Path Ahead: 1-Bromo-3-Methyl-2-Butanone in a Changing World

    The demand for agile chemistry keeps rising as industries serve shrinking batches, more tailored drugs, and consumer products with finer distinctions than ever. 1-Bromo-3-Methyl-2-Butanone nudges progress forward by giving skilled hands a bit more leverage, something that matters when development cycles keep getting shorter. Its reactivity saves steps, reduces overall chemical consumption, and allows clever synthetic detours when the obvious routes close off unexpectedly.

    Fostering a future where this compound continues to help requires balancing performance with responsibility. The next generation of chemists inherits the challenge of producing high-purity, reliable intermediates without leaving an outsized environmental legacy. Having seen both innovation and inertia up close, I’m optimistic. The tools and knowledge exist to use even specialty chemicals like this safely, sensibly, and with an eye toward the bigger picture. 

    With so many pressing questions on environmental impact, cost, and scalability, industry and academia must share lessons learned, stay open to change, and trust in both careful planning and a bit of creative risk-taking. 1-Bromo-3-Methyl-2-Butanone stands as a reminder that even the quietest compounds can leave an outsized mark—not only in the final product, but in the ways we approach science, ethics, and community.