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5-Chloro-2-Methylbenzimidazole

    • Product Name 5-Chloro-2-Methylbenzimidazole
    • Alias 5-Chloro-2-methyl-1H-benzimidazole
    • Einecs 629-616-9
    • 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

    857388

    Product Name 5-Chloro-2-Methylbenzimidazole
    Cas Number 22956-49-0
    Molecular Formula C8H7ClN2
    Molecular Weight 166.61 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 163-166°C
    Solubility Slightly soluble in water
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place, tightly closed
    Smiles CC1=NC2=CC(=CC=C2N1)Cl
    Synonyms 5-Chloro-2-methyl-1H-benzimidazole

    As an accredited 5-Chloro-2-Methylbenzimidazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 5-Chloro-2-Methylbenzimidazole is supplied in a sealed 25g amber glass bottle with a printed hazard label and product details.
    Shipping 5-Chloro-2-Methylbenzimidazole is shipped in sealed, airtight containers to ensure stability and prevent contamination. It should be handled according to standard chemical shipping regulations, including labeling for hazardous materials if applicable. Transport is usually via ground or air freight, complying with international safety guidelines for chemical substances.
    Storage **5-Chloro-2-Methylbenzimidazole** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area. Keep away from incompatible substances such as strong oxidizing agents. Protect from moisture, direct sunlight, and sources of ignition. Ensure proper labeling and access is limited to trained personnel. Follow all relevant safety and regulatory guidelines for chemical storage.
    Application of 5-Chloro-2-Methylbenzimidazole

    Applications of 5-Chloro-2-Methylbenzimidazole in Industrial Manufacturing

    5-Chloro-2-Methylbenzimidazole is a critical intermediate deployed at scale in highly regulated chemical synthesis environments. This raw material supports precise downstream specifications in the pharmaceutical, agrochemical, and colorant sectors. As the direct manufacturer, we ensure strict production traceability and systematic quality management, facilitating its integration into a range of advanced formulations for regulated end-uses.

    1. Pharmaceutical Active Ingredient Synthesis

    Our product serves as a key intermediate during the preparation of benzimidazole-based APIs, notably in the synthesis routes for omeprazole and related substituted benzimidazoles. Process chemists incorporate it during early-stage heterocyclic assembly, where it reacts under controlled condensation conditions with other aromatic or sulfinyl fragments. This step is crucial for maintaining high chiral purity and impurity profiles specified in international pharmacopoeias. Downstream, customers optimize the addition ratio based on batch size, reaction scale, and required impurity limits, ensuring compliance with stringent regulatory filing requirements.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for APIs
    • EU EudraLex Volume 4 Part II GMP
    • United States Pharmacopeia (USP) monograph references
    • European Pharmacopoeia (Ph. Eur.) quality guidelines

    Typical usage ratio

    • Reaction charge: 0.95–1.10 mol equivalents relative to substrate, adjusted for process impurities and yield targets

    Downstream process integration

    • Introduced during initial heterocycle condensation prior to N-alkylation, followed by sulfoxidation or methylation depending on API

    Final product types

    • Omeprazole API
    • Pantoprazole sodium
    • Esomeprazole
    • Other benzimidazole-based antiulcer drug substances

    2. Agrochemical Intermediate Manufacturing

    Agricultural chemical companies use this molecule as a monomeric scaffold for systemic fungicide synthesis, particularly in creating advanced benzimidazole derivatives with targeted crop protection properties. It enters the synthesis sequence early, forming part of the benzimidazole core before functionalization with side chains or halogenating agents to enhance biological activity. Manufacturers adjust the formulation proportion according to target molecule design and process scale, ensuring the material meets strict product registrations and independently validated residue levels.

    Industry compliance standards

    • FAO/WHO Technical Guidelines for Pesticide Specifications
    • ISO 9001:2015–based agrochemical QM systems
    • REACH registration for relevant benzimidazole derivatives
    • OECD Principles of Good Laboratory Practice (GLP) for impurity study data

    Typical usage ratio

    • 0.85–1.05 molar equivalents depending on desired substitution and yield analysis in pilot and commercial runs

    Downstream process integration

    • Employed during raw benzimidazole core assembly, immediately prior to halogenation or alkylation in batch or continuous synthesis

    Final product types

    • Benzimidazole-based fungicides
    • Seed treatment formulations
    • Soil-applied systemic pesticides

    3. Advanced Dye and Pigment Manufacturing

    Colorant producers use this benzimidazole derivative in specialty pigment synthesis, acting as a chromophore precursor for high-stability pigments in inks and technical plastics. It is integrated during the arylation and diazotization steps to introduce chloro and methyl functional groups, delivering dyes with enhanced UV resistance and brightness. Formulators adjust addition levels based on target pigment shade, dispersion grade, and ink carrier compatibility, monitored closely for residual precursor thresholds required in food packaging or toy applications.

    Industry compliance standards

    • EN 71-3:2019 (Safety of Toys – Migration of certain elements, for pigments used in toys)
    • ISO 18451-1:2019 (Pigments and Extenders)
    • ISO 9001–based traceability systems for batch colorants
    • EU Regulation No. 10/2011 (Food Contact Materials, applicable for pigment use in packaging)

    Typical usage ratio

    • 2–8% by weight in pigment precursors; dosage adjusted per target chromatic intensity and application (inks, masterbatches)

    Downstream process integration

    • Added during formation of benzimidazole chromophores, followed by coupling, crystallization, and purification steps; process monitored for color yield and migration compliance

    Final product types

    • High-performance plastic pigments
    • Textile reactive dyes
    • Industrial and inkjet printer inks

    4. Veterinary Pharmaceutical Intermediates

    In the animal health industry, this compound is integrated into synthesis workflows for benzimidazole-based veterinary actives, including anthelmintics and anti-parasitic products for livestock. Manufacturers dose the material precisely during the cyclization or condensation steps to ensure pharmacopoeial-grade purity for subsequent active conversion. The precise input is based on both active ingredient yield and veterinary residue requirements, validated under GMP and VICH guidelines.

    Industry compliance standards

    • VICH GLs for Active Pharmaceutical Ingredients
    • US FDA CVM Guidance for Veterinary APIs
    • Ph. Eur. veterinary monographs
    • GMP for Veterinary Medicines (GB/T 17240)

    Typical usage ratio

    • 1.00–1.15 equivalents vs. downstream cyclization partner, depending on scale and impurity management plans

    Downstream process integration

    • Enters as an intermediate in primary ring formation before methylation/oxidation, then proceeds to active compound finishing and purification

    Final product types

    • Benzimidazole anthelmintics (e.g., fenbendazole, mebendazole derivatives)
    • Veterinary deworming pharmaceuticals
    • Oral suspension and powder feed additives
    Free Quote

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    Certification & Compliance
    More Introduction

    Introducing 5-Chloro-2-Methylbenzimidazole: Precision Born from In-House Chemistry

    Over the years, our workshop has spent countless hours scaling and refining the production of 5-Chloro-2-Methylbenzimidazole. Every batch starts with raw materials sourced directly from trusted upstream suppliers, where we run the show from reaction through purification. This hands-on approach puts us close to every flask, every process parameter, every challenge we encounter, and every measure we take to control quality. Unlike the many layers between traders and actual production, we feel and steer the chemistry, and this influences the kind of product you receive.

    What Sets Our Technical Route Apart

    Years ago, we realized the traditional synthetic methods left a lot to be desired, both from an efficiency standpoint and in terms of minimizing unwanted by-products. We opted for a rigorous condensation pathway, carefully monitoring temperature and catalyst selection to minimize impurity formation. Each parameter has been dialed in through trial, error, and deep analysis. We don’t chase shortcuts, since even small process changes can show up as visible differences on the HPLC trace—and in downstream applications, that matters.

    One pain point for users has been the residual presence of unreacted starting material. It spurs discoloration and downstream fouling, both of which cost precious time and money. Our team approached this by implementing a dual-purification strategy, including both crystallization control and targeted solvent washes. Each successive batch is crosschecked with the previous one to lock in consistency, not just in terms of expectation, but in cold, hard data.

    How We Evaluate Our Output

    We look beyond the minimum assay figures. We track moisture, residue on ignition, ash, organic volatile impurities, and residual solvent content by direct measurement—not by proxy. Our in-house GC and HPLC results show exactly where we stand, and if even a marginal deviation creeps in, production halts until we isolate and solve the root cause. No truck leaves our lot with uncertain specifications.

    Particle size and flow behavior come under equal scrutiny. Our technical staff tailors the grinding step to meet application needs, paying attention to tendencies for caking or static cling. We know that a powder still too rough for tablet pressing can turn batch production into a headache, so we sweat over those details in advance. Granulation gets optimized by real-world, hands-on testing, well before our material reaches commercial partners.

    Practical Use Cases We See in the Field

    This compound fills a niche where chlorine substitution on the benzimidazole nucleus proves valuable. Most common is its role as a building block in specialty pharmaceuticals and fine chemicals, especially in custom synthesis workflows that require a robust intermediate. Our end-users, ranging from pilot plants to established global firms, often look for input materials with trustworthy lot-to-lot performance. A fluctuation in impurity profile or moisture can cascade into unpredictable downstream reactivity, something they've made clear they want to avoid.

    We listen closely to customer feedback. Some researchers told us that competitive products sometimes push side-reactions due to inconsistent Cl:CH3 substitution ratios or high background nitrogenous byproducts. We responded by double-checking our raw feed and running more frequent NMR and elemental analysis. That's why our output shows tight clustering around expected N, H, and Cl signals and minimal extraneous peaks.

    Several contract manufacturers have switched to our offering after experiencing variability with resold or relabeled imports. They report improved yields in sulfonation or alkylation reactions when starting with our compound, likely due to fewer trace organics acting as poisons or side-initiators. We don’t pretend you can skip purification at the API step, but we’re certain cleaning up at the starting material pays dividends down the line.

    Differentiating from Other Benzimidazole Products

    Some assume all substituted benzimidazoles behave similarly. Experience proves otherwise. Methyl, chloro, bromo, and nitro modifications change reactivity, solubility, and even the way a powder handles during kilo-scale production. For instance, a simple methyl group can enhance lipophilicity or shift the melting range, dictating the best solvents or process conditions. A chloro function—like on our 5-Chloro-2-Methylbenzimidazole—confers higher electron-withdrawing strength, which can gatekeep subsequent coupling or functionalization steps.

    Our product distinguishes itself further by its sharply controlled melting point and resistance against color drift, two features mentioned by formulation laboratories that compare multiple suppliers’ material side-by-side. No one likes running purification cycles just to fix color or clarity issues that stem from inconsistent starting material. We’ve seen many such cases where sub-par intermediate quality slows down the timeline of a whole project.

    Physical Handling: Beyond the Certificate of Analysis

    On a purely functional level, a product must not just meet analytical specifications—it should also perform well in the factory or laboratory. For example, during large-scale recrystallization, you watch how powders behave: are there persistent floating particulates, is there clumping, does filtration stall unexpectedly? Our team adjusts drying temperatures, sieving mesh, and storage humidity to prevent such problems. We review every batch under strict conditions matching those used in your process, gathering data on cake hardness, pourability, and response to solvents and reagents.

    You don’t learn about these handling quirks from a data sheet. Our technical staff runs mock-ups of actual use cases: we dissolve, filter, and even thermally cycle our lots to discover pain points before they leave our gates. This ensures that surprises don’t crop up in our customers' plants or at the laboratory bench.

    Sustainability and Process Responsibility

    Production of chlorinated aromatics raises environmental considerations. Our plant operates under closely monitored emissions and effluent protocols. We invest in solvent recovery and waste minimization as both a cost-saver and a risk reduction step. Even minor improvements, like switching to a closed-loop condensation recovery system, have cut our VOC output without driving up costs.

    Our staff tracks the material balance on every shift. In managing chlorinated intermediates, we’ve found vigilance early in the process keeps downstream purification less burdensome and safer. Each improvement gets benchmarked not only for economics but also for responsibility.

    Why Customers Come Back

    We do not focus on short-term orders. Our longest relationships are built on transparent communication, direct support, and consistent execution. Some buyers choose us for our openness about production details: we explain not just how a lot tests but why the process runs a certain way. If we spot an impurity at an early stage, we call it out along with the solution. Collaboration with our customers often leads to process improvements that benefit us all, such as a higher yield or lower rejection rate.

    There’s no substitute for knowing the pulse of your own plant. Our sales engineers and plant chemists speak directly to R&D and QA teams at partner firms, providing detailed reports and raw data, not just polished summaries. If a user needs atypical specifications—say, slightly tighter granule size or added analytical data—we can accommodate this, because we control every step ourselves. Third parties can’t match the speed or detail we provide when responding to technical queries or troubleshooting.

    Feedback that Shapes our Product

    Our technical group regularly reviews both complaint and compliment logs. For example, some partners sought a finer powder for a cascade reaction requiring rapid dissolution; we ran pilot batches through finer milling, checked for electrostatic charge buildup, and adjusted anti-caking measures. Other requests came for moisture-sensitive packaging. Instead of improvising, we worked with materials engineers to optimize both the inner liner and drum design, sending pre-ship samples for customer validation. The result improved shelf life and workflow, and we adopted the changes across the board.

    We also learned from order-scale feedback. One user flagged a recurring anomaly: slight color darkening during storage. We traced the issue to trace oxidant carryover in the final drying step, then adjusted drying protocols and monitored headspace oxygen content. No more darkening. This type of feedback loop has made our product stronger, and our teams keep channels wide open so these observations bubble up fast.

    What We Provide Out of the Gate

    Each shipment includes a tailored analytical package—full NMR, FTIR, GC/MS, and, for larger lots, stability trend data spanning several months of real storage, not accelerated. We archive retention samples from every lot, ensuring any in-field question can be traced to a real, tested specimen. Some buyers value this more than anything else; they know we won’t offer hand-waving explanations if something seems off.

    We view documentation as a living record. For use in regulated sectors, supporting letters and traceability are available, without additional paperwork or delays. Our documentation aligns directly with the data from our operating records, not spreadsheet summaries.

    Pathways for Future Improvement

    We track both customer needs and chemical literature, watching for greener catalyst systems and more efficient route options to the benzimidazole core. Our R&D staff meets monthly with production troubleshooters, generating practical pilot proposals and following industry publications on sustainability and safety. By combining insights from direct plant data and published research, we find actionable steps to streamline, such as cutting out a process solvent or improving filtration cycles.

    Regulatory landscapes keep shifting, so we update both our synthetic approach and documentation accordingly. This keeps customers ahead of changing requirements, and lets us scale up changes in a measured, predictable manner. Real-world production has its constraints—reactor footprint, waste stream permits, raw material pipelines—but we talk frankly about them and enlist customer guidance to set future targets.

    Comparing with Off-the-Shelf Alternatives

    Some buyers experiment with stock offerings from brokers or broad-line suppliers. The intent varies: price-focused users seek up-front savings, while others sample across sources for redundancy. Feedback from these market segments has helped us sharpen our own process. When new users describe frequent specification drift, mismatched analytical records, high particulate load, or off-odor, we ask for side-by-side samples and investigate. Our internal blind tests repeatedly show smaller tails in impurity or moisture distribution, leading to greater reliability in actual synthesis or formulation runs.

    Unlike generic alternatives shipped without rigorous tracking or testable process history, our batches come with origin, timeline, and empirical data attached. That credibility gets built up slowly, over time, by fixing problems before shipment, not after. Some choices are invisible on the data sheet but immediately obvious when a plant team tries to make downstream product: less foaming, more predictable melting, ease of transfer from drum to reactor.

    Who Depends on 5-Chloro-2-Methylbenzimidazole

    We keep our customer base broad—ranging from specialty pharma labs scaling up an investigational compound to major agrochemical developers optimizing complex actives. The recurring message from these sectors is identical: reliability and quick access to technical dialogue make their jobs easier. They don’t want to gamble on the cost and delay of requalifying a poorly specified lot, so they return for material with a long, transparent chain of evidence behind it.

    Some customers focus on micron-scale processing, where flowability and static matter more than high-purity specs alone. Others pursue end-uses that demand extremely low halogen content or minimal ash. We have developed custom clearance protocols to serve both needs without undercutting bulk users who value robust, high-throughput stock. Flexibility comes from vertical integration—all operations remain in our hands, and all improvements are tied to real-world customer experience.

    Technical Support and Troubleshooting

    We staff experienced chemists, not just call center operators. This strengthens the connection between our customers and our production staff, allowing real-time troubleshooting. In one documented case, a partner flagged intermittent drop in reactivity during N-alkylation. Looking at both process data and shipment history, our team traced the issue to an unusual drum liner interaction. We worked together to test new liners and resolved the issue after several trial shipments. The communication benefited everyone—helping our customer avoid lost yield and us to refine packaging protocols.

    Support doesn’t end at the shipment; we catalog feedback and connect directly to those who use our material on the floor, at the bench, or at the pilot reactor. Data sharing goes both ways, improving synthesis and future batches alike. These open channels have repeatedly allowed us to prevent minor headaches from turning into costly waste or time loss.

    The Value of Close Production Control

    Running our plant brings a clear advantage—the feedback cycle between R&D, analytics, and commercial operations remains direct and responsive. Without middlemen fragmenting information, we act on signals quickly and adapt fast to changing needs. Our workflow emphasizes constant learning, incremental process upgrades, and broad transparency to all who use our product.

    Anyone purchasing from us receives not just a chemical, but the collective effort and expertise behind each batch. Quality evolves, but never by chance. We strive to build trust, not just keep up with commodity demand, because every partnership developed with our customers makes the product better. This long-term approach is what distinguishes us—from a technical, operational, and human perspective.