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2-Bromo-1H-Benzimidazole

    • Product Name 2-Bromo-1H-Benzimidazole
    • Alias 2-Bromobenzimidazole
    • Einecs 249-877-7
    • 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
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    Specifications

    HS Code

    793076

    Chemicalname 2-Bromo-1H-Benzimidazole
    Casnumber 1532-09-8
    Molecularformula C7H5BrN2
    Molecularweight 197.03
    Appearance White to off-white powder
    Meltingpoint 204-208°C
    Solubility Slightly soluble in water
    Density 1.78 g/cm³
    Purity Typically ≥98%
    Smiles Brc1nc2ccccc2[nH]1
    Inchi InChI=1S/C7H5BrN2/c8-6-9-7-4-2-1-3-5(7)10-6/h1-4H,(H,9,10)
    Storagetemperature Store at 2-8°C

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

    Packing & Storage
    Packing The 25g 2-Bromo-1H-Benzimidazole is packaged in a sealed amber glass bottle with a tamper-evident cap and hazard labeling.
    Shipping 2-Bromo-1H-Benzimidazole is shipped in tightly sealed containers, protected from light and moisture. It is handled as a hazardous chemical, following all safety regulations for transport. Standard shipping is via ground or air, accompanied by relevant Safety Data Sheets (SDS) and appropriate hazard labeling. Suitable for delivery to laboratories and qualified institutions.
    Storage 2-Bromo-1H-benzimidazole should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from direct sunlight and sources of ignition. Keep the chemical away from incompatible substances, such as strong oxidizing agents. Label the storage container clearly and handle it using appropriate personal protective equipment to avoid inhalation, ingestion, or skin contact.
    Application of 2-Bromo-1H-Benzimidazole

    Applications of 2-Bromo-1H-Benzimidazole in Industrial Manufacturing

    2-Bromo-1H-Benzimidazole forms a critical intermediate for several advanced manufacturing sectors, supporting specialty synthesis, technical process development, and regulated end-use products across the global chemical industry. Below, we present focused industrial applications, with essential compliance, usage parameters, process entry points, and output product examples as experienced and supplied directly by our manufacturing site.

    1. Active Pharmaceutical Ingredient (API) Intermediate Synthesis

    Within the pharmaceutical sector, 2-Bromo-1H-Benzimidazole is a key intermediate during the multi-step synthesis of anti-ulcer, antiviral, and anticancer APIs, including benzimidazole-based compounds. Synthesis protocols demand strict process validation and traceability, as the intermediate enters at defined coupling or substitution stages. Formulators rely on precise feed ratios and established cleaning validation to ensure residual halides and impurities remain within pharmacopeial limits. Finished APIs, subsequently granulated and formulated, must pass additional Good Manufacturing Practice (GMP) quality release requirements.

    Industry compliance standards

    • ICH Q7 GMP Guideline for Active Pharmaceutical Ingredients
    • USP, EP, JP pharmacopoeial monographs (final API compliance)
    • FDA 21 CFR Part 211 cGMP regulations
    • European Medicines Agency (EMA) API supply chain documentation

    Typical usage ratio

    • Mol ratio: 1.00 equivalent during core cyclization or substitution
    • Scale: 10–80 kg per 100 kg batch, adjusted for target API yield and impurity profile

    Downstream process integration

    • Introduced to main reactor during heterocyclic ring formation or N-alkylation stage
    • Monitored under in-process HPLC/GC analytical control
    • Subject to purification at subsequent crystallization or extraction steps

    Final product types

    • Omeprazole, Lansoprazole, and similar benzimidazole-based pharmaceuticals
    • Antihelmintic drugs for veterinary applications
    • Intermediate bulk APIs for worldwide formulation sites

    2. Agrochemical Active Ingredient Intermediate

    Downstream agrochemical manufacturers utilize this compound as a functional intermediate to produce advanced benzimidazole fungicides and plant-growth regulators. High batch repeatability, accurate impurity documentation, and safe waste handling define acceptance criteria. The intermediate usually enters chlorination or aryl amination reactions, forming key heterocyclic structures. Compliance with regional pesticide regulations and reach certification is strictly enforced throughout the supply chain.

    Industry compliance standards

    • FAO/WHO Specification for Pesticide Intermediates
    • REACH Registration (EU)
    • EPA Pesticide Registration Technical Data Requirements (US)
    • ISO 9001 Process Quality Management

    Typical usage ratio

    • Batch-level: 0.8–1.1 molar equivalent per target intermediate
    • Range: 15–100 kg per 250 kg synthesis run

    Downstream process integration

    • Charged into reactor with base and solvent for nucleophilic aromatic substitution
    • Phase transfer or catalyst addition is staged per process requirement
    • Downstream separation and residue testing performed

    Final product types

    • Carbendazim and similar benzimidazole agrochemical actives
    • Seed treatment agents
    • Pre-mixed pesticide formulation bases

    3. Specialty Dye and Pigment Manufacturing

    Producers of high-performance dyes and pigments for plastics, fibers, and electronics incorporate this intermediate in the synthesis of benzimidazolyl chromophores. Quality control targets include color depth, particle uniformity, and residual bromide minimization. The compound typically enters at the coupling or condensation stage under controlled temperature and monitored pH conditions, supporting the robust formation of the color-giving core. Continuous process verification and off-spec recycling are standard requirements.

    Industry compliance standards

    • OEKO-TEX Standard 100 (for textile-grade dyes)
    • GMP for Manufacturer of Cosmetic Ingredients (if pigment enters make-up chain)
    • RoHS 3 directive (electronics colorants, EU)
    • ASTM D3134 for quantitative colorant analysis

    Typical usage ratio

    • 0.5–1.3 eq in comparison to the core aromatic precursor
    • 20–120 kg per 500–1000 kg pigment batch

    Downstream process integration

    • Blended with diazonium salts or other coupling agents in batch reactors
    • Reaction temperature closely maintained (90–120°C typical)
    • Intermediate pigment mass isolated by controlled filtration and washing

    Final product types

    • Benzimidazolone pigments (Yellows, Oranges, Reds)
    • Conductive dyes for specialty polymers
    • High-lightfast colorants for fibers and plastics

    4. Electronic and Photoresist Material Synthesis

    Fabricators of electronic chemicals select 2-Bromo-1H-Benzimidazole for building blocks in advanced organic semiconductors, OLED layers, and photoresist agents. High purity, ultra-low metal contamination, and traceable supply documentation are mandatory. The intermediate enters crucial Suzuki or Buchwald cross-coupling steps with precise temperature and anhydrous handling, supporting reliable polymer backbone construction. All end-use batches undergo additional electrical and photophysical property validation.

    Industry compliance standards

    • SEMATECH EHS Protocols (semiconductor materials)
    • JIS C 6100/IEC 61249 for electronic chemical purity (JP/EU)
    • ISO 9001 with traceable batch records
    • Restriction of Halogen Compounds (customer-specific)

    Typical usage ratio

    • 0.95–1.05 eq relative to coupling partner on bench to semi-bulk scale
    • 10–60 kg per 150 kg organic electronic material batch

    Downstream process integration

    • Added to anhydrous solvent with palladium or copper catalyst for C–C bond formation
    • Followed by purification through liquid-liquid extraction and column chromatography
    • Stringent filtration for removal of metal residues and particulates

    Final product types

    • OLED small molecule emitters and blue host materials
    • Photoresist monomers for lithography
    • Organic field-effect transistor (OFET) compounds

    5. Chemical Research and Custom Synthesis Services

    Contract research organizations, process development institutes, and laboratory-scale technology centers request this compound for structure-activity relationship studies, reference molecule production, and building complex scaffolds for next-generation materials science. High documentation standards, batch registration, and Certificate of Analysis (COA) with NMR, HPLC, and MS data routinely accompany shipments. Material enters directly into targeted exploratory synthesis and scale-up assessment workflows.

    Industry compliance standards

    • GLP (Good Laboratory Practice) for regulated study support
    • ISO/IEC 17025 accreditation (analytical traceability)
    • Full COA with impurity profiling per customer protocol
    • Material Safety Data Sheet (MSDS) with REACH Annex II compliance

    Typical usage ratio

    • 5 g to 500 g per synthesis, variable by research protocol
    • Equivalency depends on target reaction, typically 1.0 eq in scaffold construction

    Downstream process integration

    • Dosed in glove box or under nitrogen atmosphere for moisture-sensitive steps
    • Immediate use in heterocyclic core assembly, cross-coupling, or photonic device prototype runs
    • Followed by purification steps: flash chromatography, preparative HPLC, or zone refining

    Final product types

    • Reference standard compounds for pharma and materials research
    • Analytical standards for instrument calibration
    • Patentable molecules for electronic and medicinal chemistry studies
    Free Quote

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    Certification & Compliance
    More Introduction

    2-Bromo-1H-Benzimidazole: Reliable Quality, Trusted Source

    About the Product

    2-Bromo-1H-Benzimidazole (Model: BMZ-BR2) has been a staple in our production line for years, not because it is glamorous, but because it does its job well and consistently. The molecular structure offers a foundation used daily in many chemical innovations, from pharmaceutical intermediates to specialty materials. In our experience working with benzimidazole derivatives, the 2-bromo variant stands out for its stable reactivity and adaptability in synthesis routes that demand halogen functionality in a heterocyclic core.

    The crystalline, off-white powder has a molecular formula of C7H5BrN2 and a molecular weight of 197.04 g/mol. Our standard purity starts at 99%, with batch tests available for each lot we ship. Customers who work with us often want to know exactly what they're buying—so we lab-check every delivery and share a complete certificate of analysis with actual chromatograms, not just a rubber-stamp purity check. Water content runs below 0.3%, and our process avoids contamination with other halogenated or non-halogenated benzimidazoles.

    Why 2-Bromo-1H-Benzimidazole Matters in Chemical Synthesis

    The strength of 2-Bromo-1H-Benzimidazole lies in its ability to serve as a bridge compound. Our regular customers—usually research labs and production chemists—use it to build bioactive molecules and new candidate materials for electronics, agrochemicals, and active pharmaceutical ingredients. The bromo-substituent at the 2-position allows for reliable coupling reactions. That’s proven especially valuable in Suzuki, Stille, and Buchwald-Hartwig cross-couplings. If you have ever tried to create a library of benzimidazole-based molecules, you know the headache that comes from inconsistent or off-color starting material. A small impurity in the ring system can lead to whole series of failed follow-up reactions. We take that risk seriously and keep close control over each production run.

    We have designed our process to avoid unwanted isomerization and decomposition during halogenation. This is not a step most traders or intermediaries care much about, but from a manufacturer’s view, avoiding side products makes a difference once the material scales up to the kilo level and beyond. Yields remain high, and waste management gets easier. Over the years, we have refined recrystallization and washing steps that prevent common issues like coloration, excessive fines, or persistent metallic odor.

    How Our 2-Bromo-1H-Benzimidazole Differs From Common Alternatives

    If you look at the benzimidazole catalog, alternatives like 2-chloro- or 2-iodo-benzimidazole appear frequently. Some chemists consider swapping the halogen, based on price or access, but after seeing many client projects, there’s a real-world difference when it comes to reaction rates and compatibility. The bromo analog often provides a sweeter spot between reactivity and selectivity—easier to handle than the iodo version (which oxidizes quickly and sometimes requires stricter storage), yet more reactive than the chloro analog in standard cross-coupling.

    We try not to chase maximum profit by blending or downgrading lots. What emerges from our reactors is simply 2-Bromo-1H-Benzimidazole, batch-tested, pure, and uniform for lab or industrial use. Our staff spends plenty of time on the purification train, since various sources in the market pass off off-white, low-spec, or “mixed halide” content under the same name. Our in-house quality control has caught such errors before they turn into real problems for our downstream customers.

    Lessons Learned from Scale-Up and Production Realities

    Scaling from grams to kilos has its own set of hurdles. Our experience shows that side reactions, like overbromination or backbone cleavage, tend to increase during scale-up rather than diminish. Early on, we ran into a lot of waste when pushing the bromo reaction too hard—temperatures, solvent purity, and addition rates all made the difference. We solved these by tightening control at each heat, mixing, and isolation stage—not assuming that textbook procedures would translate to actual reactors with variable raw material quality.

    We do not shy away from sharing issues openly with our customers. Sometimes, special requests come in for finer particle sizes or higher solubility. Some research clients want extra-low trace metal content, especially when downstream processes need precious metal catalysis. We have built up enough technical know-how to filter, recrystallize, and handle this material without introducing new impurities. Even with custom modifications, we maintain the same traceability protocols—any sample from any drum can be tracked all the way back to input lots and processing times.

    Downstream Performance in Drug Discovery and Advanced Materials

    In the world of benzimidazole derivatives, being able to rely on your core starting material avoids headaches. Customers report that yields on nucleophilic substitution or cross-coupling reactions behave predictably with our 2-Bromo-1H-Benzimidazole. Because of its particular halogen position, it behaves as a genuine workhorse substrate in the rapid assembly of bioactive heterocyclic compounds—one of the key steps in lead optimization projects within pharmaceutical research.

    Outside of pharmaceuticals, some clients push the chemistry toward advanced material applications, such as OLED intermediates or specialty coatings. Post-functionalization on the benzimidazole ring is straightforward with this bromo variant, and after many years of back-and-forth communication with R&D partners, we focus hard on making sure every lot offers repeatable performance—not just passing minimum specs, but behaving the same in actual synthesis. False starts due to variable raw material quality can inflate timelines and costs, something we help our clients prevent by controlling the upstream quality ourselves.

    Stability, Packaging, and Long-Term Handling Insights

    Over the years, our research and discussions with end users led us to develop special packaging for 2-Bromo-1H-Benzimidazole. Though the material sits stable under dry, sealed storage, we have seen that, under humid or poorly sealed conditions, surface darkening and clumping can develop. Once, a poorly packaged drum returned from a logistics warehouse showed significant caking—a mistake we corrected by switching to double-lined polyethylene drums and including desiccant pouches as a standard practice. This brought customer complaints to nearly zero.

    Our packing lines run in clean areas with strict dust and cross-contamination control. Every outgoing drum has a traceable label, and our team inspects drum liners by hand. These steps might seem excessive to some, but after dealing with a single bad shipment years ago that led to six weeks of production delay at a client site, we learned the value of this attention. In the long run, material that remains stable and pourable makes life easier for everyone down the supply chain.

    No Substitute for Ground-Level Knowledge

    As a manufacturer, our perspective comes from both the chemistry and the realities of what customers face on the ground. The batch records and supply data are only part of the story—each month brings new application notes or inquiry calls from a PhD student attempting a new synthetic route. One repeating conversation is about solubility profiles—some customers ask about DMF, DMSO, or ethanol dissolution. We have tested our product in these solvents under typical lab conditions, and we share this data openly. Most requests for small-scale samplings get quick fulfillment, because we know a few grams, if of solid quality, can answer more questions than a hundred back-and-forth emails.

    Quality matters, and it shows up in the stories our customers relate back to us. One customer running a multi-step synthesis project shared that their previous batch from another supplier left behind persistent off-smells and colored byproducts—switching to our material cleaned up their process and saved valuable time. Another group working on scale-up into GMP pharmaceutical conditions found fewer unexplained batch failures with our material compared to unnamed sources from spot traders. These anecdotes line up with the analytical data we provide, confirming the real-world impact of upstream consistency.

    What Sets Our Approach Apart

    Many players sell 2-Bromo-1H-Benzimidazole, but only those who invest in direct production, on-site handling, and application trials know the substance beyond paper specs. Our lot reports list not just purity, but impurity profiles, volatility loss, and even handling notes. For example, some older supplies can emit a faint odor if exposed to open air too long; by adjusting our drying steps and switching to shorter packaging to shipping windows, we reduced these events nearly to nothing. Advice to customers about shelf life, repackaging, and sample handling comes from our frontline chemists, not photocopied data sheets.

    Having walked customers through tricky scale-ups, method development, and even patent dispute clarifications—where raw material origin and analytical signatures matter—we know the devil is in the details. When customers need data on trace halides or request extra NMR or HPLC analysis, we open our books and walk through test results line by line. This hands-on, data-first perspective builds confidence not just in our material, but in working with our manufacturing team.

    Sourcing Challenges in the Broader Market

    The chemical market for benzimidazole derivatives features a patchwork of small-batch producers and large intermediaries, with end-users sometimes stuck navigating poorly documented or ambiguous supply chains. We see requests for "just any" 2-Bromo-1H-Benzimidazole, often with cost as the main filter, but experience shows that cut-price material usually carries hidden expenses. One client prepared a crucial reaction with cheap supply sourced via an overseas agent, only to lose half their work to inconsistent crystallization and unpredictable melting range. We stepped in with validated material and helped them get back on track.

    Our advice to customers seeking reliable supply: demand full transparency on origin, batch analytics, and impurity profiles. Push your supplier to provide honest answers about processing history and packaging standards. If a broker cannot describe their material’s handling—how the bromination took place, or how the mother liquor was washed out—risk of reproducibility issues rises. Direct relationships with manufacturers reduce this risk. We invite visits to our facility for audit or technical collaboration, confident that our production floor practices match the specifications we claim on paper.

    Continuous Improvement and Feedback

    Our journey with 2-Bromo-1H-Benzimidazole hasn’t been static. Over the years, customer input has pushed us to improve. Early on, a consistent critique involved granularity—material tended to clump in storage. By working with equipment experts and lab techs, we refined our drying and sizing procedures. After those changes, handling improved, resulting in better flow and dosing accuracy for downstream weighing in small reactors.

    Sometimes feedback is less technical yet no less valuable. We remember an order in which a university lab team reported a faint pink color in a portion of their lot. Rather than dismiss the concern, we opened a full batch investigation, tracked down a suspected trace contaminant, and changed a supplier of a feedstock solvent. Follow-up tests eliminated the discoloration, and we sent replacement material at our cost. This kind of relationship, built on trust and accountability, means our clients rarely change suppliers once they switch to direct sourcing from our plant.

    The Real Cost of Cutting Corners

    Market pressure can push some to cut corners—blending off-grade product, skipping critical washes, or passing along subpar material without real analysis. We've repaired more than one client’s process after a run-in with such “grey market” supply. Whether making a pharmaceutical intermediate or a new polymer formulation, untested variables in key precursors like 2-Bromo-1H-Benzimidazole can set back months of R&D. We see our job as more than pushing product out the door—we’re a partner invested in each user’s success, driven by doing things right, each batch, each drum.

    We encourage conversation both ways. Customers who give clear feedback about performance help us push our standards ever higher. When we see a new requirement emerge—stricter impurity tolerances, or unique application challenges—we work through it together, updating internal controls, or tweaking process steps. The relationship isn’t just transactional. We invite ongoing dialogue so the material and our support fit real-world technical needs, not just a line on a catalog page.

    Open Data, Real-World Insight

    Our philosophy has grown from the floor up—quality results from daily attention, not theoretical aspirations. Downtime is costly for everyone, including ourselves, and we hold that our strongest advertisement comes from successful projects delivered on time by our clients. When customers ask for second or third-party verification, we support it, supplying not just samples but full analytical run data and chain-of-custody documentation.

    Supporting regulatory reviews comes as part of the territory. For those making regulated pharma products, we provide open access to documentation, analyst credentials, and facility audit reports. Our history of open audits and third-party testing gives buyers assurance that what they receive matches both national and international compliance standards for chemical precursors—offering needed proof for regulatory submission or patent filings.

    Looking Ahead: Evolving Needs in Sourcing and Manufacturing

    As research frontiers shift and new application spaces open—including areas like smart materials, advanced electronic components, and greener production strategies—raw material consistency matters even more. We’ve committed ourselves to continuous plant investment, process improvement, and open client collaboration so we can meet not just today’s needs, but tomorrow’s challenges as well. Customers who work with us get more than a drum of chemical—they gain a pathway to high-confidence synthesis, application support, and ongoing troubleshooting.

    2-Bromo-1H-Benzimidazole rarely makes headlines, but we know that in laboratories around the world, its quality quietly underpins projects from drug discovery to device engineering. Our advantage comes not from trading margins or fancy marketing, but from living and breathing the process, day in and day out. We keep our doors open to questions, audits, and new challenges—because our product’s real value lies in making yours work better, from the ground up.