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4-Bromo-7-Methylisatin

    • Product Name 4-Bromo-7-Methylisatin
    • Alias 4-Bromo-7-methyl-1H-indole-2,3-dione
    • Einecs 629-343-9
    • 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
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    151134

    Productname 4-Bromo-7-Methylisatin
    Casnumber 19632-08-7
    Molecularformula C9H6BrNO2
    Molecularweight 240.05
    Appearance Yellow solid
    Meltingpoint 224-228°C
    Purity 98%
    Storagetemperature 2-8°C
    Synonyms 4-Bromo-1H-indole-2,3-dione, 7-Methyl-4-bromo-1H-indole-2,3-dione
    Solubility Slightly soluble in water

    As an accredited 4-Bromo-7-Methylisatin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 4-Bromo-7-Methylisatin, 5g: Supplied in an amber glass bottle with a secure screw cap, labeled with hazard symbols and handling instructions.
    Shipping 4-Bromo-7-Methylisatin is shipped in tightly sealed containers, protected from moisture and light. It is packaged according to chemical safety regulations, often within inner plastic bags and cushioned secondary containers. Transport is conducted under controlled conditions, ensuring compliance with hazardous material guidelines to prevent leakage, contamination, and exposure during transit.
    Storage 4-Bromo-7-Methylisatin should be stored in a tightly sealed container, protected from light and moisture. Keep it in a cool, dry, well-ventilated area away from incompatible substances such as strong oxidizers. Properly label the container and ensure it is stored in accordance with institutional regulations for hazardous chemicals. Use personal protective equipment when handling the compound.
    Application of 4-Bromo-7-Methylisatin

    Applications of 4-Bromo-7-Methylisatin in Industrial Manufacturing

    4-Bromo-7-Methylisatin plays a critical role as an intermediate in the synthesis of several specialized chemical products. Due to its unique structural properties, this compound sees targeted use across a defined range of industrial sectors where precise performance requirements and rigorous compliance standards dictate downstream application. Below, we outline the principal application scenarios, detailing the regulatory frameworks, formulation parameters, integration stages, and typical end products observed in real-world manufacturing environments.

    1. Active Pharmaceutical Ingredient (API) Intermediate for Central Nervous System Drugs

    This material serves as an essential intermediate in producing certain indole-based APIs, specifically for central nervous system (CNS) therapeutics, including select anticonvulsants and antidepressants. Pharmaceutical manufacturers incorporate the compound in multi-stage syntheses to construct complex molecular scaffolds required by modern CNS drug candidates. Handling this precursor demands strict tracking and process validation to comply with safety and pharmacopoeial standards.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for APIs
    • United States Pharmacopeia (USP)
    • European Pharmacopoeia (Ph. Eur.)
    • 21 CFR Part 211 (cGMP for Finished Pharmaceuticals, relevant to precursor traceability)

    Typical usage ratio

    • Intermediate amount: 0.12–0.26 molar equivalents per API batch, adjusted based on target molecule yield and route efficiency

    Downstream process integration

    • Direct addition at early-stage indole condensation or amidation steps in API synthesis

    Final product types

    • Anticonvulsant drug substances
    • Tricyclic antidepressant actives
    • Other indole-derivative pharmaceutical APIs

    2. Dye and Pigment Intermediate for Specialty Colorants

    Manufacturers of high-performance dyestuffs and pigments employ this compound as a key intermediate when constructing quinoline or indigoid-based colorant molecules. Its bromo and methyl groups provide controlled sites for subsequent substitution, crucial for producing colorants with required shade strength, solubility, and fastness properties for industrial textile and ink applications.

    Industry compliance standards

    • OEKO-TEX® Standard 100 chemical requirements for dyes
    • EN 71-3 for pigments in toys
    • REACH Regulation EC 1907/2006 (EU chemicals safety registration)

    Typical usage ratio

    • Intermediate loading: 0.5–1.7% w/w of target dye batch, optimized with respect to yield and chromophore development pathway

    Downstream process integration

    • Introduction at the coupling or cyclization phase of synthetic dye manufacturing (e.g., indigoid pigment synthesis)

    Final product types

    • Reactive and vat dyes for cotton textiles
    • High-stability inkjet printing dyes
    • Pigment preparations for industrial coatings

    3. Agrochemical Synthesis: Precursor for Heterocyclic Herbicides

    Leading agrochemical producers utilize this material to construct heterocyclic backbones in selective herbicide synthesis. Its functional groups enable efficient introduction of desired moieties in the assembly of target molecules, especially for products designed for rice and wheat protection. The integration stage requires careful quality control to avoid undesired side products that may affect regulatory approval and environmental compliance.

    Industry compliance standards

    • FAO Specification and Evaluation for Agricultural Pesticides
    • EPA 40 CFR Part 180 (Tolerances and Exemptions for Pesticide Residues in Food)
    • ISO 9001:2015 Quality Management

    Typical usage ratio

    • Process intermediate feed: 0.8–1.2 molar equivalents per batch, depending on conversion rates in the target heterocycle ring formation

    Downstream process integration

    • Feedstock for initial N-alkylation or condensation in synthesis of triazole or pyrrole-containing herbicides

    Final product types

    • Systemic post-emergence herbicide technical concentrates
    • Wettable powder and EC (emulsifiable concentrate) formulations
    • Bulk actives for crop protection application

    4. Fine Chemical and Material Science Research Reagent

    Advanced labs in both corporate and academic settings rely on this compound for constructing indolinone frameworks during fine chemical synthesis and materials science research. The bromine and methyl substituents make it ideal for selective halogenation or cross-coupling reactions, supporting the design and pilot production of molecular electronic, photovoltaic, and advanced polymer materials with tunable properties.

    Industry compliance standards

    • ISO 9001:2015 certified quality management for specialty chemical production
    • Internal research safety and handling protocols (aligned with OSHA/CLP for laboratory use)
    • No direct regulatory listing, but subject to research board oversight for novel materials

    Typical usage ratio

    • Addition rate: 0.05–0.15 molar equivalents per target molecule, adjusted by project requirements and cross-coupling methodology

    Downstream process integration

    • Employed at the building-block stage in Suzuki, Heck, or Buchwald-Hartwig cross-coupling to construct custom heterocycles

    Final product types

    • Prototypical organic semiconductors
    • Custom OLED materials
    • Research-grade functionalized polymers
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    Certification & Compliance
    More Introduction

    Introducing 4-Bromo-7-Methylisatin: A Vital Intermediate from Our Own Production Lines

    Reflecting on Years of Practical Manufacturing Experience

    In our path as a chemical manufacturer, certain molecules stand out for their reliability, utility, and the consistent results they bring both to our partners’ work and our own. 4-Bromo-7-Methylisatin has long established itself as one of these keystone products. We produce it ourselves, right from sourcing the base materials, running purification, and conducting each stage of synthesis under one roof. Every batch gets our firsthand attention and oversight, shaped by years of practical experience on the production floor. Our technical focus isn’t theory—it’s daily practice, repeated, measured, and improved with every cycle.

    Our Standard: Batch Consistency and Purity

    From time to time, researchers and buyers mention problems they face with inconsistent quality from traders or resellers—unexpected trace contaminants, ambiguous melting points, lab notebooks scribbled with a range instead of a reliable number. Making 4-Bromo-7-Methylisatin ourselves means we can stand confidently behind our specifications. Our model, recognized in the market by the shorthand “4-Br-7-MeOIsatin,” hits a purity minimum of 99% on HPLC. We calibrate for color, melting point, and tight control of residual solvents. People working on more sensitive applications—such as pharma intermediates or sensitive organic syntheses—see the value in this each time they run their own analytics.

    What Sets this Compound Apart

    Brominated isatins play a distinct role in synthesis labs. Among them, 4-Bromo-7-Methylisatin offers a unique combination: the electron-withdrawing bromine occupies the para position relative to the carbonyl, while the methyl group on position 7 modulates electron density on the ring. Colleagues interested in fine-tuning biological activity or seeking selective reactivity often prefer it over unsubstituted isatin or even other halogenated derivatives. We’ve watched demand for this particular structure climb as more researchers discover new coupling and cyclization chemistry enabled by its unique setup.

    The Edge Gained from Organizing Material at Scale

    Front-line chemists value not just the molecule, but trustworthy access to it. We learned early in our manufacturing that planning tight inventory only causes headaches when a project suddenly scales up. Now, almost all batches of 4-Bromo-7-Methylisatin run at a minimum scale of multi-kilogram lots, with finished stock ready for shipment. This means shorter lead times, fewer project delays, and less risk to process development timelines, a practical edge for those moving beyond benchtop scale. It’s rare for distributors to match this speed, since they rarely control the upstream supply chain.

    Key Physical and Analytical Details

    Working hands-on with this compound nearly every week, we’ve come to recognize some touchstones: a bright orange solid with a characteristic melting range, verified routinely in our labs. Analytical checks run the full panel: NMR, IR, HPLC, and mass spec data from our own instruments, not off-the-shelf certificates. Any deviation gets flagged, the affected batch held until retesting confirms resolution. Such routines, ingrained in our daily operations, matter to downstream users troubleshooting reaction or product performance. We don’t ship until our own experienced staff signs off on batch approval firsthand.

    How Users Employ 4-Bromo-7-Methylisatin in Practice

    Chemists often share with us what happens at their benches after the product arrives. In medicinal chemistry workflows, 4-Bromo-7-Methylisatin frequently serves as an advanced intermediate for constructing indole scaffolds, spiro compounds, and kinase inhibitor analogs. The bromine group activates the site for cross-coupling reactions—Suzuki, Stille, or Sonogashira—enabling rapid library generation impossible with less reactive building blocks. The presence of the methyl group influences product selectivity and solubility, streamlining purification in downstream steps. Larger process chemistry teams benefit from straightforward scalability; we optimize crystallization to keep handling practical no matter the lot size.

    Direct Comparisons to Other Available Isatins

    Having manufactured and handled a range of isatin derivatives, we’ve seen the distinct character 4-Bromo-7-Methylisatin brings to the table. The unsubstituted isatin lacks the electronic bias required for certain coupling reactions. 5-Bromoisatin, while reactive, sometimes produces different regioisomer issues or solubility challenges that complicate scaling. Introducing a methyl solely on the 7-position rather than at 5- or 6- preserves compatibility for a wider panel of bioactive targets, as our feedback from medicinal chemistry collaborators has shown. By synthesizing each variant ourselves, we see firsthand how even small structural differences affect reaction rates and selectivity—a knowledge rarely captured in a typical distributor’s catalog.

    Pathway Control and Traceability

    Ownership of each part of production helps us offer flexibility that resellers can’t. Recently, a client approached us needing material labeled with an exotic isotope for custom tracing studies. Since our team runs every step in our own facilities, adapting the synthesis—switching a brominating agent or selecting a 13C label up the chain—doesn’t require mystery or third-party approval. That’s the kind of real-world adaptation we thrive on. An order asking for slightly tighter impurity specs or solvent content isn’t a bureaucratic slog. It’s just another day’s work for our technical staff, who know exactly where every bottle of precursor entered or left our systems.

    Process Improvements: From Waste Minimization to Energy Optimization

    Producing halogenated organic intermediates demands environmental attention. Because we run our own reactors, we’ve had the chance to cut chlorinated solvent use, recycle spent bromination media, and optimize crystallization steps to reduce waste. What saves us time and cost uplifts customers as well—they get consistent product, and we cut unpredictability from batch to batch. In our experience, such improvements aren’t marketing buzzwords but hard-won results of iterative, hands-on retooling. People in R&D, regulatory, or supply chain roles see these efforts reflected in the reliability of delivery and minimized downstream handling hazards.

    A Track Record of End-User Feedback

    Many of our partners return year after year not just for a chemical, but because they trust who made it and how. Once, a customer flagged a minor difference in color tone after a process tweak; instead of making them wait, our QA team ran side-by-side analysis and talked through batch data immediately. Being close to the product and having direct access to our technical staff removed days of back-and-forth. Over time, this kind of collaboration has helped us to refine particle size for easier handling and improve bulk density, based directly on user input. We treat this practical communication as the backbone of the product’s reputation.

    Supporting Emerging Applications

    In our conversations with research clients, we increasingly see 4-Bromo-7-Methylisatin moving from the traditional pharmaceutical sector into newer fields—light-activated dye synthesis, advanced organic electronics, and even pilot-scale materials for sensor platforms. The bromine functional group in this context acts as a modular handle, allowing for late-stage modifications precisely where researchers want them. As end-uses diversify, more buyers find value in sourcing this molecule straight from a manufacturer who understands not just the chemistry, but the evolving needs around stability testing and regulatory documentation. Regulatory teams appreciate full traceability and batch records directly from the manufacturer, rather than puzzling over incomplete histories from resellers.

    Compliance and Documentation: Why Controlling Production Matters

    Our in-house documentation extends beyond the typical certificate. Because audits and regulatory checks have become stricter worldwide, being able to access site batch records, raw material logs, and full analytical profiles in-house has made a real difference, especially for customers filing new drug submissions. Direct control from raw material acquisition to outgoing shipment reduces paperwork delays and mitigates risk of qualification bottlenecks during scale-up or technology transfer. We field regulatory questions directly, supplying requested analytical traces, impurity profiles, or process diagrams without waiting on upstream suppliers. From real experience, we see how this access can make or break a new application’s timeline.

    Scalability and Problem Solving: The Manufacturer’s Perspective

    Technical support doesn’t end after the shipment leaves the loading dock. Over decades of production, we’ve helped customers troubleshoot solubility challenges, side reaction clean-up, and alternative synthetic routes—sometimes under time pressure from approaching patent filings or formulation deadlines. By handling material from kilo-lab to multi-ton scale in-house, our staff build up archives of real-world problem-solving that goes far beyond what’s listed on paper. This insight often leads to new process variants as we experiment jointly with research groups to adapt the synthetic approach or purification for improved yields. Such interaction reinforces why proximity to the actual production gives us and our customers an advantage.

    A Transparent Approach to Custom Orders

    Sourcing specialty chemicals through third parties usually means weeks of uncertainty about true lead times or root causes for delays. Customers needing custom packaging—say, to avoid static build-up in sensitive downstream applications—appreciate our willingness to tweak final handling protocols. Typing a quick email to our technical lead removes ambiguity about how product will be handled, not lost in translation or passed between layers of middlemen. Customers requiring extra documentation, photographic batch records, or nonstandard certificates routinely work with us on a first-name basis. Such connections rarely happen with intermediaries who never touch the finished compound.

    The Difference Direct Manufacturing Makes in Risk Management

    Healthcare, electronics, and specialty dye projects all rely on solid, continuous supply. Over the years, disruptions stemming from upstream interruptions taught us hard lessons about the importance of vertical integration. By running our own 4-Bromo-7-Methylisatin synthesis, we buffer against shortages and unexpected market shifts. Our partners count on us for uninterrupted access to a molecule with time-sensitive or project-critical roles. When hiccups arise, be it raw material hiccups or processing anomalies, our real-time feedback loops and inventory oversight allow us to solve problems quickly—no finger pointing or confusion about where a bottleneck sits.

    Team Expertise: The Foundation of Product Quality

    Behind every lot of 4-Bromo-7-Methylisatin are real personnel—synthetic chemists, process engineers, QC analysts—each invested in meeting specific benchmarks. Staff running analytics regularly rotate through synthesis and purification so they see both sides of the operation. That way, analytical data connects directly to operational choices. Such cross-functional know-how, developed on our own floor, results in a product more robust to error and more responsive to improvement than anything just shipped by a distributor. Feedback from both customers and staff routinely focuses on small but crucial process changes, from slurry filtration to optimized drying curves, that keep product performance high.

    Trends in Downstream Use: From Laboratory to Production Scale

    A decade ago, nearly all orders for 4-Bromo-7-Methylisatin went into discovery-phase projects. Now, we regularly ship bulk quantities for use in process development or commercial production. Our in-process controls help ensure that scale-up into plant reactors doesn’t introduce unexpected issues, such as unwanted side impurities or handling losses. Practical improvements—introducing sieves to reduce dust, refining crystallization to boost yield—arose from direct collaboration with manufacturing partners moving their own processes to bigger tanks. Reliable, high-purity material cuts the risk that process hiccups multiply, saving both time and money for scaling teams.

    Commitment to Environmental Responsibility

    Running production in our own facilities means we shoulder the burden of safety and waste handling, not suppliers or downstream users. We’ve invested in solvent recovery, emission minimization, and locally compliant waste treatment. Practical changes, such as switching to lower-impact bromination agents or optimizing water usage in purification steps, reflect years of learning. Producing 4-Bromo-7-Methylisatin responsibly doesn’t end with the final filtration step. Our internal policy requires ongoing environmental tracking and annual review of process hazards. Customers, in turn, benefit by getting product that meets both technical and regulatory benchmarks for greener chemistry.

    Conclusion: Direct Manufacturing as Quality Assurance

    Working directly at every stage, from raw stock to final shipment, gives us the leverage to keep quality front and center. Over the years, the lessons we’ve learned on the manufacturing floor translate directly to the reliability of 4-Bromo-7-Methylisatin, supporting chemists in research and industry around the world. A real manufacturer’s perspective—grounded in first-hand experience, open communication, and continuous technical improvement—offers more than just a product code on a catalog. Each batch, each delivery, tells our story of commitment and hands-on expertise in the specialized world of chemical synthesis.