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4-Bromo-1-Indanone

    • Product Name 4-Bromo-1-Indanone
    • Alias 4-Bromo-2,3-dihydro-1H-inden-1-one
    • Einecs 213-945-7
    • 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

    159774

    Product Name 4-Bromo-1-Indanone
    Cas Number 703-46-2
    Molecular Formula C9H7BrO
    Molecular Weight 211.06 g/mol
    Appearance Off-white to light brown solid
    Melting Point 97-100 °C
    Boiling Point No data available
    Density No data available
    Purity Typically ≥97%
    Smiles C1CC2=C(C1=O)C=CC=C2Br
    Inchi InChI=1S/C9H7BrO/c10-7-3-1-2-6-4-5-8(11)9(6)7/h1-3H,4-5H2
    Synonyms 4-Bromo-2,3-dihydro-1H-inden-1-one
    Refractive Index No data available
    Storage Conditions Store at 2-8°C, protected from light

    As an accredited 4-Bromo-1-Indanone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 25g of 4-Bromo-1-Indanone is packaged in a sealed amber glass bottle with a printed chemical label and hazard information.
    Shipping 4-Bromo-1-Indanone is shipped in accordance with chemical safety regulations. It is securely packaged in sealed containers, clearly labeled with hazard information. Shipments are transported via approved carriers, following all relevant IATA, DOT, and IMDG guidelines for hazardous substances. Handling instructions and safety data sheets are included with each shipment.
    Storage 4-Bromo-1-Indanone should be stored in a tightly sealed container, kept in a cool, dry, and well-ventilated area away from sources of ignition, heat, and direct sunlight. Store it separately from strong oxidizing or reducing agents. Ensure proper labeling, and avoid moisture exposure. Use secondary containment if necessary, and follow all local chemical storage regulations and safety guidelines.
    Application of 4-Bromo-1-Indanone

    Applications of 4-Bromo-1-Indanone in Industrial Manufacturing

    Our facility specializes in the production and large-volume supply of 4-Bromo-1-Indanone for advanced industrial applications. This intermediate plays a significant role across diverse fine chemical and pharmaceutical manufacturing chains. Below, we detail four core downstream uses, highlighting process integration, compliance, typical dosage, and final product outcomes.

    1. Active Pharmaceutical Ingredient (API) Synthesis: Central Nervous System Drugs

    Pharmaceutical manufacturers select 4-Bromo-1-Indanone as a key intermediate for producing complex API structures, including those targeting central nervous system disorders. Through controlled halogenation and subsequent ring-closing reactions, synthesis teams utilize the compound within stepwise multi-stage processes, particularly for research or commercial routes to indanone-based APIs such as Rasagiline and related analogues. Suppliers must ensure controlled impurity profiles, tight residual solvent control, and proven traceability for regulatory submissions.

    Industry compliance standards

    • ICH Q7: Good Manufacturing Practice (GMP) for Active Pharmaceutical Ingredients
    • USP and Ph. Eur. monographs, where applicable
    • 21 CFR Part 211 (FDA cGMP for finished pharmaceuticals)
    • EDQM CEP requirements for API intermediates

    Typical usage ratio

    • 0.85–1.05 molar equivalents per final API target, adjusted according to step conversion, analytic control of starting material purity, and byproduct management

    Downstream process integration

    • Introduced after initial ring assembly, preceding reductive amination or aryl substitution; incorporated as an isolated intermediate or used in wet cake form in telescoped processes

    Final product types

    • Rasagiline base or salt forms (anti-Parkinson’s APIs)
    • Other monoamine oxidase B inhibitor APIs
    • Research-grade indanone derivatives for CNS research
    • Regulatory-test APIs for toxicology studies

    2. Agrochemical Intermediate Manufacturing: Herbicide Synthesis

    Producers of selective herbicides and plant growth regulators employ 4-Bromo-1-Indanone as a core intermediate for constructing halogenated indanone skeletons. These are commonly used in custom synthesis agreements for proprietary agrochemicals, where the strict control of trace bromide and residual solvents is a prerequisite for final product safety. Downstream manufacturers integrate our material into multistep aromatic substitution and cyclization protocols to build the core scaffolds of post-emergence weed management compounds.

    Industry compliance standards

    • FAO/WHO specification for pesticide active ingredients
    • ISO 9001:2015-certified production and batch release practice
    • Local environmental and occupational health standards (SEPA, EPA, REACH, as applicably notified)
    • Residue specification standards for PAI synthesis

    Typical usage ratio

    • 1.0–1.3 equivalents per step, depending on side chain extension yield and halide scavenging conditions

    Downstream process integration

    • Used after initial indane scaffold assembly, inserted at halogenation or Grignard coupling stage, ahead of final amide or acid group installation

    Final product types

    • Indanone-derived herbicide technical concentrates
    • Patent-protected post-emergent weed control agents
    • Custom-formulated plant growth regulation actives
    • Intermediate stock solutions for further custom synthesis

    3. Fine Chemical Intermediate for Dye and Pigment Synthesis

    Specialty dye and pigment producers utilize 4-Bromo-1-Indanone as a critical building block for synthesis of brominated indanone-based chromophores. The compound enables efficient coupling and ring modification in the creation of advanced colorants, particularly those used in high-performance industrial paints, plastics, and optical films. Manufacturers specify high purity and consistent grades to ensure batch-to-batch reproducibility and color strength for demanding automotive and electronics pigment applications.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management Systems for Colorant Production)
    • RoHS Directive (2011/65/EU) on restriction of hazardous substances
    • REACH (EC 1907/2006) registration for intermediate use
    • ASTM D4302 for pigment color evaluation

    Typical usage ratio

    • Typically 0.9–1.2 moles per mole of primary chromophore scaffold, depending on reaction scale, conversion rates, and waste minimization goals

    Downstream process integration

    • Integrated in coupling or cyclization step after initial aromatic alignment, facilitating functionalization prior to pigment finalization or crystallization

    Final product types

    • Brominated indanone dyes for fiber coloration
    • High-stability pigments for automotive coatings
    • Optical-grade colorants for film and display manufacturing
    • Electronic device marking inks

    4. Organic Semiconductor Precursor in Functional Material R&D

    Research divisions and advanced material manufacturers rely on 4-Bromo-1-Indanone as a defined precursor for formulating organic semiconductors and conjugated molecular frameworks. Use centers on the creation of π-conjugated indanone motifs, which contribute to field-effect mobility and unique optoelectronic properties in organic electronic devices. Stringent analytical QC ensures the starting material supports reproducible device characteristics and dependable trial chain extensions for lab-scale innovation.

    Industry compliance standards

    • ISO/TS 80004 for nanomaterials and functional chemical purity
    • ASTM F2915 for organic electronic materials qualification
    • UL94 flammability compliance for polymer integration
    • RoHS compliance for innovation-grade material components

    Typical usage ratio

    • 0.8–1.0 equivalents per target moiety in pre-polymer feedstocks; ratios tuned for experimental design, solvent system, and chain length optimization

    Downstream process integration

    • Injected post-monomer assembly, directly coupled with donor-acceptor motifs, usually under inert atmosphere in glovebox-based process streams for prototype or small-batch run-ups

    Final product types

    • Organic thin-film transistor (OTFT) semiconductor precursors
    • Photovoltaic active layers for experimental solar cells
    • Electroluminescent intermediate stocks for display backplanes
    • R&D-conjugated polymers targeting electronics markets
    Free Quote

    Competitive 4-Bromo-1-Indanone prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Introducing 4-Bromo-1-Indanone: A Manufacturer's Perspective

    Product Insight Rooted in Real-World Experience

    4-Bromo-1-indanone stands out in our catalog because we manufacture every batch ourselves, tuning the process to our real-world understanding of what matters in chemical synthesis. Inside our plant, the synthesis starts with a rigorous selection of high-purity feedstock and extends through each stage, from bromination to isolation and precise purification. Chemists here long ago learned that control at each stage—whether it’s monitoring temperature on a cold winter morning or keeping every filtration run smooth—translates straight into the finished product’s performance in our customers’ hands.

    The material comes off our line with a consistent crystalline appearance, reflecting careful solvent choice and a dedication to fine control over reaction times and purification steps. Over the years, we’ve found that any slip in moisture content or trace metal contamination disrupts downstream applications, so we pay special attention to washing, drying, and particle finishing. The packing process happens in a controlled, low-humidity area, using lined containers that prevent reintroduction of moisture. Each drum we send out represents the work of dozens of skilled production staff and years of accumulating practical know-how.

    Specifications and Physical Properties That Matter in Daily Use

    Most descriptions gloss over the details of physical chemistry, but on a production floor, things like melting point range and impurity profile mean the difference between success and frustration. Our 4-Bromo-1-indanone regularly meets a melting point between 89 and 92°C—close monitoring and methodical recrystallization ensure it stays there. HPLC and GC trace analyses routinely show purity above 99%, with bromide and indanone-related byproducts kept at microscopic levels. Contamination with solvents or dust doesn’t only lower yield for you—it can stall an entire batch, so we hedge against it at every stage.

    Customers use this material because it delivers reliable, predictable results in downstream reactions, whether for heterocyclic building block synthesis, pharmaceutical intermediate production, or various research applications. As a manufacturer, we see repeat demand for the exact grade we produce, which speaks louder than any sales brochure. We supply the powder in multi-kilogram lots, wrapped in multi-layered bags. That might seem like a small detail, but this approach prevents clumping, keeps product flow consistent for automated dispensing, and saves valuable time for end users.

    Understanding Application Demands

    4-Bromo-1-indanone owes its popularity to its strong performance as a building block in organic and medicinal chemistry. Chemists turn to this compound for things as varied as cycloaddition reactions or as a halogenated precursor for Suzuki and Heck cross-coupling experiments. The indanone scaffold, with a bromine atom installed at the four-position, reacts cleanly, giving high yields without the headache of managing unexpected side reactions. Industrial customers tell us that variance in even simple physical properties throws off campaign planning and purification, which is where our process-driven approach pays off.

    Every year, dozens of labs rely on the material to support synthesis projects as diverse as kinase inhibitor research, SAR explorations, and construction of advanced intermediates. Sometimes, a customer will call our technical support team with feedback or troubleshooting—for instance, about an unexpected byproduct spotted in NMR after storage. Our analytical lab uses real samples from random points off the lot to run targeted impurity screening and to tweak water content, drawing from our catalog of historical experience. This hands-on method has become an important guarantee for repeat purchasers that they will get material that behaves the same way each run, not just on a certificate, but in real lab glassware.

    Comparing with Similar Chemical Offerings

    For buyers weighing 4-Bromo-1-indanone against related compounds, the distinctions extend beyond a line in the catalog. Many intermediates in this family lack the stability or clean reaction profiles that this brominated indanone gives. In our manufacturing environment, we’ve evaluated dozens of similar structures—ortho- or meta-brominated isomers, unsubstituted indanone, chlorinated analogs. Side-by-side tests show that 4-Bromo-1-indanone consistently shows tighter melting point range, better shelf life, and a lower tendency to degrade under normal warehouse conditions. This comes from both the ring structure and the position of the bromine group, and we have seen it play out in reactivity panels and long-term storage tests.

    Some customers consider substitutes like 5- or 6-bromoindanones or seek cheaper alternatives, but feedback from development groups tells a unified story: purity and isomer distribution cannot be sacrificed without risking failed syntheses or costly troubleshooting later. The chemical’s reactivity as an electrophile, its stability as a shelf-stored intermediate, and its reliable crystallization profile all set it apart from other options. Our customer case studies make it clear that even minor differences in supplier approach—wash cycles during crystallization, temperature control during bromination, or trace ion removal—alter the downstream yield and isolation quality.

    Daily Manufacturing Realities: Lessons Learned Over Time

    Making 4-Bromo-1-indanone on a production scale always brings surprises. Raw material price swings force shifts in bulk buying, which means procurement and inventory must stay nimble. Supply chain hitches—like shipping delays for key solvents—mean we build flexibility into our calendars, and backup plans for power or equipment outages matter every bit as much as reaction optimization. A technical team member might catch a slight color change in a packed batch, leading to a round of extra testing to understand if process drifted at some subtle point.

    Instead of chasing volume alone, we focus on incremental improvements each production campaign. Over the years, our staff have devised tweaks to solvent systems and spent many hours logging temperature fluctuations or recording data every minute during exothermic steps. Reducing dust generation during final charging, for instance, resulted from plenty of internal discussion and repeated trial runs on our pilot plant before being implemented in full-scale drums. This continuous learning filters down to the quality you receive—every improvement in our workflow translates into stronger reliability once our product gets to your site.

    Supporting the End User: Beyond the Drum

    Customers who buy from manufacturers expect more than a product. We often help troubleshoot reaction issues and recommend handling processes, sharing data from our own lab and drawing from the stubborn problems we’ve already solved. Researchers ask about solubility in particular solvents or reactivity under new conditions, which we answer from having tried dozens of variations in our own development phases. Shipment feedback also flows directly back to our R&D teams; we treat every break in the supply chain as a chance for both sides to learn and reduce hassle down the line.

    We make periodic site visits to some customers, watching how packaging fits into automated dispensing or storage routines. This leads to tweaks—tighter drum seals, changes to double-bagging procedures, labeling adjustments for clearer product tracking. The closer we work with chemists and production engineers on your side, the better we shape the practical side of our product.

    Getting Past Typical Challenges

    Stability and storage present recurring hurdles. 4-Bromo-1-indanone, like many organobromine compounds, picks up trace moisture from the air, which can affect analytical purity or process yield. From years of running storage stability studies, we learned to double-wrap and vacuum-seal every package for long-distance shipping. Each batch passes standard peroxide and water content tests before moving out of QC. Our advice: always store in low-humidity, well-ventilated spaces, away from strong bases or oxidizers. If a customer’s batch has accidentally absorbed water, our lab has found vacuum drying at moderate temperatures can physically restore the original properties without promoting side reactions.

    Disposal of off-spec or expired product also takes care. Some users find that neutralization and incineration work best, although it pays to check with local regulations and capture brominated vapor from any burning steps. We run fractionation columns for solvent recovery on-site, which both saves money and limits waste—the same approach works for laboratories at a smaller scale. When purity concerns arise, customers sometimes ask whether distillation will purify aged material; we caution against it, as this can prompt decomposition or create new byproduct peaks that confuse analytics.

    No Substitute for Hands-On Experience

    Over decades of operation, our team has seen the wide gap between product specs and real-world outcomes. What sets manufactured 4-Bromo-1-indanone apart is the accumulation of operational wisdom: tweaks to synthesis timing, careful temperature ramps, hours spent at the grinder coaxing a perfect consistency, and a lower reliance on bland “quality management” slogans. Each improvement, no matter how minor, comes from actual plant-floor frustration—an unpredictable filter clog, an odor at the reactor, a product that just wouldn’t dry down to the expected weight. This direct connection between manufacturer and end-user is why our product ends up serving medicinal chemists, production plants, and academic labs equally well.

    Shaping the Future with Feedback

    Many changes to our process sprang directly from regular conversations with our partners and customers. One customer’s challenge with handling static in a high-throughput synthetic lab pushed us to review our drying and finishing system. Another’s report of clumping after air shipment led us to rethink how we seal and layer packaging for global routes. Our technical exchange meetings keep us in touch with the wider scientific community—if a research team notices a new byproduct or altered reactivity, we take that back to our lot records and investigate upstream process adjustments.

    We track not only quality and consistency but energy and resource inputs, always searching for cleaner synthesis routes and better yields. Our R&D team regularly investigates greener alternatives to classical bromination and alternative purification methods. These efforts come as much from regulatory pressure as from personal commitment; as chemists, we know the future of specialty chemicals depends on both safety and stewardship.

    Conclusion: Reliability Grounded in Manufacturer Experience

    Choosing 4-Bromo-1-indanone starts with chemistry but continues through hands-on reliability and shared experience. For chemists scaling reactions or discovery teams needing every gram to count, the smallest details—crystal habit, bag integrity, trace impurity content—translate into project timelines and cost. As the team that oversees each kilogram from reactor to pack-out, we see ourselves not just as suppliers, but as part of the user’s wider workflow. That perspective drives us to refine, respond, and reexamine our process—drawing from both years of operational lessons and a continuing conversation with users at the bench or on the plant floor. As a manufacturer, our investment in detail and care remains the single greatest guarantee of performance and reliability.