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Cyanogen Bromide

    • Product Name Cyanogen Bromide
    • Alias bromocyan
    • Einecs 200-949-8
    • 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

    732597

    Cas Number 506-68-3
    Molecular Formula CNBr
    Molar Mass 105.92 g/mol
    Appearance Colorless to white crystalline solid
    Odor Pungent, irritating
    Melting Point 52 °C
    Boiling Point 61 °C
    Solubility In Water 20 g/100 mL (20 °C)
    Density 2.18 g/cm³
    Refractive Index 1.595
    Vapor Pressure 110 mmHg (20 °C)

    As an accredited Cyanogen Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Cyanogen Bromide is packaged in 100-gram sealed amber glass bottles, with tamper-evident cap, within a secondary protective container.
    Shipping Cyanogen Bromide should be shipped in tightly sealed, corrosion-resistant containers, clearly labeled with hazard warnings. It must be packed with compatible materials and cushioned to prevent breakage. Transport is regulated as a toxic and volatile substance, requiring compliance with all applicable local and international regulations, including documentation and emergency procedures.
    Storage Cyanogen bromide should be stored in a tightly sealed container, in a cool, dry, well-ventilated area, away from heat, light, moisture, and incompatible substances such as acids and bases. It must be kept in a poison-designated storage area, clearly labeled, and secured to prevent unauthorized access. Use secondary containment to prevent accidental spills or leaks.
    Application of Cyanogen Bromide

    Applications of Cyanogen Bromide in Industrial Manufacturing

    Cyanogen bromide serves as a critical tool in multiple specialized industries, mainly within pharmaceutical synthesis, biotechnology, peptide mapping, molecular biology, and fine chemicals processing. Our factory partners with global industrial plants for precise supply and technical consultation.

    1. Pharmaceutical Peptide Synthesis

    In modern peptide drug synthesis, cyanogen bromide enables the selective cleavage of methionine residues for controlled peptide mapping and fragment isolation. Manufacturers use it during process development for producing therapeutic peptides required by global pharmaceutical pipelines. The chemical reacts with methionine-containing peptides under acidic conditions, followed by rapid extraction and purification of the cleaved fragments for downstream formulation. The process requires thorough material handling and exhaust management due to the compound's volatility and toxicity, necessitating tiered containment and emission scrubbing at every batch stage.

    Industry compliance standards

    • European Pharmacopoeia (Ph.Eur.) for active pharmaceutical ingredient purity
    • Good Manufacturing Practice (GMP, ICH Q7)
    • United States Pharmacopeia (USP) guidelines for residual solvents
    • Occupational Safety and Health Administration (OSHA) regulations for workplace safety

    Typical usage ratio

    • 0.1–2.0 molar equivalents relative to peptide substrate, with exact ratio set by methionine content and target cleavage efficiency

    Downstream process integration

    • Introduced during post-synthesis peptide fragmentation
    • Followed by neutralization, extraction, and HPLC purification
    • Process monitored by LC-MS/MS to verify fragment yield and purity
    • Byproduct handling specified per internal QMS and emission limits

    Final product types

    • API-grade peptide fragments
    • Research-grade peptide mixtures
    • Custom peptide building blocks
    • Reference standards for peptide drug development

    2. Affinity Chromatography Ligand Activation

    Chemical bioprocessors rely on cyanogen bromide for activating agarose and cellulose bead matrices during the preparation of affinity chromatography columns. The agent reacts rapidly with hydroxyl groups on the resin under neutral-to-slightly basic conditions, forming cyanate esters that serve as coupling sites for diverse proteins, antibodies, or other affinity ligands. We deliver the raw material in controlled packaging to minimize moisture uptake and maintain reactivity during storage and transport. Strict operator training programs ensure safe matrix activation and waste disposal protocols.

    Industry compliance standards

    • ISO 13408-2:2018 (Aseptic Processing of Healthcare Products)
    • FDA 21 CFR Part 211 (Current Good Manufacturing Practice for Finished Pharmaceuticals)
    • Cleanroom safety rules per ISO 14644
    • Specific internal specifications for ligand coupling efficiency and leachables

    Typical usage ratio

    • 15–25 mg cyanogen bromide per mL hydrated resin, with batch-specific adjustments for ligand density requirements

    Downstream process integration

    • Integrated in bead matrix pre-charging step, after resin washing
    • Activation immediately followed by ligand or protein coupling
    • Post-reaction washing and neutralization
    • Process validation includes residual cyanogen bromide and ligand coupling efficiency testing

    Final product types

    • Affinity chromatography columns for protein purification
    • Custom ligand resins for diagnostics
    • Large-scale protein A- or G-conjugated resins
    • Laboratory grade and industrial purification kits

    3. Molecular Biology Reagent Manufacturing

    Manufacturers of DNA/RNA binding and sequencing kits utilize cyanogen bromide as a coupling agent to immobilize oligonucleotides and enzymes onto solid supports. Precisely controlled reactions enable the creation of high-sensitivity detection substrates for use in automated sequencing or hybridization arrays. The raw material must be handled in contained, dust-free enclosures to prevent cross-contamination and exposure, with all waste neutralized according to local environmental law before disposal. Production employs rigorous in-process testing for coupling yield and functional testing of each batch.

    Industry compliance standards

    • ISO 13485:2016 (Medical Devices QMS)
    • REACH Regulation (EC 1907/2006) for chemical safety
    • RoHS Directive (EU 2015/863) for hazardous substances restrictions
    • OECD Guideline 105: Water Solubility for environmental documentation

    Typical usage ratio

    • 5–20 mg per mg of oligonucleotide or protein to be immobilized, with dosage adapted to surface density and support size

    Downstream process integration

    • Initiation post-purification of oligonucleotides or proteins
    • Direct coupling onto glass, polymers, or magnetic beads
    • Successive washes and buffer exchange
    • Batch-wise QC with hybridization or binding assays

    Final product types

    • Solid-phase sequencing substrates
    • Molecular probe arrays
    • Multiplexed diagnostic panels
    • Enzyme-linked oligo supports for RT-PCR and hybridization

    4. Agrochemical Intermediate Synthesis

    Producers of select herbicides and pesticide active intermediates use cyanogen bromide as a controlled-reactivity halogenating agent in the synthesis of isothiocyanate, heterocyclic, and nitrile-based agrochemicals. The raw material enables efficient conversion steps at moderate temperatures and predictable yields, important for cost-effective bulk production. Production lines employ in-line monitoring for vapors and enforce engineering controls for chemical exposure, as large-scale usage requires detailed site-specific risk assessments and third-party regulatory inspection.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management)
    • Globally Harmonized System (GHS) classification and labeling
    • European REACH registration and use-specific authorization (when applicable)
    • Local Hazardous Chemical Management Ordinances

    Typical usage ratio

    • 0.2–1.5 molar equivalents per reactant depending on targeted halogenation degree and impurity control requirements

    Downstream process integration

    • Used in first- or mid-stage raw material halogenation steps
    • Reaction quenching, followed by organic extraction and distillation
    • Intermediate purification per downstream activity demand
    • Batch documentation and cross-check against targeted impurities

    Final product types

    • Pesticide active ingredient intermediates
    • Herbicidal pre-cursor compounds
    • Fine chemical inputs for functional agrochemicals
    • Bulk technical intermediates for formulation plants
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    Certification & Compliance
    More Introduction

    Cyanogen Bromide: A Manufacturer’s Perspective on Production, Handling, and Industry Roles

    Understanding Cyanogen Bromide in Practice

    Working with chemicals like cyanogen bromide every day, we see its unique properties and risks up close. Our team uses this compound mainly as a reagent, mostly in the field of peptide synthesis, where it enables site-specific cleavage at methionine residues. Over decades, the protocols have been refined not only for efficiency but for reliability, aligning with the standards our clients set—especially those in biochemical and life sciences research.

    The cyanogen bromide we produce falls under the code CNBr-AQ1, a model recognized for high purity and consistent reactivity. Specifications matter more on the factory floor than they do in sales brochures; we’re talking about purity rates consistently above 98 percent, white crystalline form, low moisture content, and a near-neutral smell under contained conditions. Shelf life, packaging, and the ability to handle the material safely make a difference in how researchers and OEMs carry out their work. Every batch is stabilized and double-sealed, because the risks with reagents of this class leave no room for shortcuts or “good enough.”

    How Cyanogen Bromide Finds Its Purpose

    In our operation, we supply cyanogen bromide to protein chemistry labs looking to sequence and synthesize peptides. This compound enables clean peptide mapping, especially when researchers aim for selective cleavage at methionine sites without broader damage to the protein chain. Some customers use it for cyanation and bromine transfer reactions, which clearly illustrates its flexibility. The market expects material that dissolves rapidly in water or organic solvents without leaving insoluble particles—that’s become a benchmark for operational predictability. No one can afford contamination in a research project running on expensive enzymes or rare tissue samples.

    On the applied chemistry side, cyanogen bromide stands out compared to alternatives like cyanogen chloride or N-chlorosuccinimide. We experience less collateral modification in synthesized products. Our team handles it in solid form, unlike cyanogen chloride, which releases gas more readily and complicates handling. When used in resin activation for affinity chromatography, it reliably attaches ligands to support matrices. It can’t do everything; for broader reactivity, labs might turn to carbodiimides, but for precise methionine cleavage or coupling reactions, the story changes.

    Quality, Safety, and Real-World Manufacturing Considerations

    Manufacturing cyanogen bromide means upholding a consistently tight process. From as early as raw materials, our procurement protocols call for robust records—any impurity in potassium cyanide, for instance, can trigger a chain reaction of quality flags down the line. We track humidity levels at every step and log temperatures in real-time, because ambient moisture shortens shelf life and crystallization speed. Through experience, we’ve seen seemingly small variables—an out-of-spec flask, a skipped neutralization step—impact both laboratory outcomes and personnel health in a matter of weeks. The product’s instability in moist air isn’t theoretical. Residues left in joints or connections have caused issues before; cleaning must follow a strict check-list.

    On the factory floor, safety lines don’t exist only on paper. Respiratory protection, real containment not just hoods, chemical monitors—these are daily realities. The compound liberates cyanide gas on contact with acids or water, which means handling protocols don’t come from regulatory authorities alone but from witnessed incidents and near-misses. Because the product needs to reach laboratories and manufacturing lines as intended, our team regularly runs simulation drills and equipment tests. Recertifying PPE and updating training manuals is standard. Mixing or transferring even small batches of cyanogen bromide calls for two-person teams with cross-checking at every stage. All waste streams route immediately to sealed hazardous zones for confirmed neutralization.

    Meeting Research Demands, Not Just Market Needs

    Unlike mass produced compounds, specialty reagents like cyanogen bromide require an approach that’s both technical and personal. We speak directly with bench chemists and industrial R&D teams, not just purchasing departments. Many peptide mapping procedures rely on extremely tight reaction windows, so the product must not only meet published specifications but also behave predictably under specific conditions. Laboratories often tell us they cannot afford downtime; they need cyanogen bromide that dissolves fast, with no observable residues and no off-odors that could suggest hydrolysis. For us, repeatability isn't a tagline. It’s strict adherence to a process governed by documented outcomes.

    Clients will sometimes compare our cyanogen bromide to offerings from other global producers. We respect that. Our facility operates under full traceability, with QA and batch referencing on every package. Shelf life gets watched closely, down to the level of humidity in the warehouse. We believe real differences show not in spec sheets, but in supplier relationships. Returning customers alert us to shifting research needs, allowing quick adjustment to batch sizes or special packaging requests—especially for cold shipping or local regulatory labeling.

    The Role of Cyanogen Bromide in Modern Chemistry

    As the life sciences sector expands, compounds once considered specialized—cyanogen bromide included—have found fresh applications. In DNA immobilization, affinity purification, and advanced peptide synthesis, this reagent makes possible what alternative reagents complicate. Researchers continue to refine processes that hinge on clean, repeatable cleavage, where a single failure could set back multi-week experiments or undermine biotechnological production.

    On the ground, we have worked with emerging biotech companies who discovered batch-specific issues. Through collaborative troubleshooting, we have seen how adjustments in crystallization or drying can make the difference between a repeatable peptide sequence and repeated failures. Companies share unpublished data and request custom specifications. As a manufacturer, being able to adapt batches—whether with adjusted particle size or packaging under modified atmospheres—gives our partners confidence that their needs anchor our production choices.

    Known Differences: Cyanogen Bromide vs. Common Alternatives

    Throughout our years in chemical manufacturing, our team has handled multiple reagents competing in similar arenas. Cyanogen bromide stands out by producing cleaner cleavages for peptide mapping, especially compared to cyanogen chloride, which brings increased volatility and greater occupational risk. Brominated cyanogen releases gas less readily than its chloride cousin—an advantage in everyday laboratory handling with open systems.

    Some labs have approached us after using N-chlorosuccinimide or PEGA-based solid supports, with complaints about incomplete cleavage or unwanted side modifications. While those reagents have their place, cyanogen bromide’s reactivity—at neutral to slightly acidic pH and mild temperatures—avoids unnecessary byproduct formation, keeping post-reaction purification more manageable. We have collected feedback showing fewer process interruptions and higher target peptide yields with our product, which translates to real time and resource savings.

    Compared to carbodiimide chemistry, often employed in crosslinking applications, cyanogen bromide offers a more controllable route for matrix activation—minimizing background coupling and supporting higher target specificity. For high-throughput settings, especially in automated purification, this consistency counts. Researchers who have switched over tell us they experience fewer equipment clogs, more streamlined process flows, and more reliable yields, especially in column-based systems.

    Responsible Manufacturing for High-Hazard Compounds

    Manufacturing cyanogen bromide goes beyond batch chemistry. The obligations extend to product stewardship, regulatory compliance, and end-user support. Over time, our internal programs for handling hazardous materials have expanded. We integrate material safety feedback from downstream users to continually update containment, labelling, and incident response protocols. Every feedback cycle finds its way into modifications, whether redesigning secondary containment in our packaging or streamlining documentation required by inspection bodies.

    Cross-disciplinary teams track regulatory changes across our shipment zones. Restrictions on cyanide compounds continue to evolve, covering everything from transportation to user authentication. We work closely with authorities to clarify intent and minimize misunderstanding in paperwork, without holding up critical shipments. Colleagues in the warehouse, production, and compliance teams share information swiftly—enabling decision-making that puts safety and transparency at the forefront.

    Every shipment receives batch-specific documentation. Safety datasheets include updated risk language informed by current literature and incident reporting. Years ago, we implemented barcoded container tracking, allowing instant backtracking if any issue emerges down the supply chain. In rare cases of spill or misplacement, our procedures allow investigators to pinpoint not just the affected batch, but every party involved in its transit and storage. We learned early that no company can afford ambiguity in hazardous chemical logistics.

    Challenges and Solutions for Industry and Research

    Navigating the world of fine chemicals carries unique pressures. Sourcing reliable raw ingredients brings its own headaches, particularly with shifting international restrictions and transportation challenges. We maintain agreements with backup suppliers and keep inventory buffers to absorb potential delays. It prevents production stoppages and, more importantly, helps reassuring our partners that their research or manufacturing timelines stay intact.

    Waste treatment has become a formidable topic. Cyanogen bromide breaks down rapidly with sodium hydroxide or ammonia, but neutralization must occur under fully contained conditions. Our facility invests in real-time monitoring of effluents, and every operator goes through updated hazardous waste handling modules. Regulatory pressure here has spurred investment rather than cut corners, resulting in a cleaner record compared to earlier decades in the industry.

    Some researchers express concern over the limitations of cyanogen bromide for certain cleavage reactions. We acknowledge its selectivity for methionine may not be suitable for all protein sequences. Our technical team consults directly, often recommending preliminary small-scale testing to determine suitability before committing valuable samples. It builds trust, and gives us practical feedback on novel applications or unresolved bottlenecks in the wider scientific community.

    More industries now demand clean, traceable chemicals for everything from pharmaceutical intermediates to advanced diagnostics. We participate in global consortia that discuss evolving quality standards, not as an exercise in box-ticking but as a means of hearing about the latest research, contamination risks, and process improvements. Our team learns what bottlenecks biochemists face, and which analytical methods help clients avoid costly do-overs.

    Listening to Feedback from Labs and Factories

    Over the years, customers have highlighted the importance of packaging integrity. Moisture or temperature fluctuations in transit can degrade cyanogen bromide. So, every internal process, from sealing to final inspection, reinforces quality. If a report comes in about discoloration or off-odor, our tech team investigates, drawing on logs and storage records. Once, a series of incidents with a particular transit route revealed that temperature excursions, invisible to the naked eye, explained sporadic loss of reactivity. After adjusting our logistics partners and implementing time-stamped temp logging, complaints disappeared.

    Researchers also flag issues with product form. Crystals that cake or bridge are harder to measure consistently, introducing error in dosing and handling. Our formulations team invests in drying techniques and particle size control—moving away from legacy processes that might have prioritized capacity over reliability. Every complaint or suggestion gets entered into a system for review during weekly production meetings; changes follow only after lab verification and repeat test runs.

    By promoting regular feedback loops and listening as much as instructing, our team stays close to what matters most to scientists and process engineers. End-users count on us not only for the chemical, but the assurance it brings—avoiding downstream surprises and unnecessary process modifications. Facing the challenges of this field head-on has built a culture where understanding and consistency shape manufacturing far more than theoretical purity alone.

    Embracing Improvement, Sharing Responsibility

    Handling hazardous, highly reactive chemicals takes more than regulatory compliance. Every batch reflects the collective experience of a team, a careful mix of responsibility, insight, and direct laboratory feedback. Technology brings improvement, but human vigilance and shared learning distinguish true reliability in fine chemicals. Cyanogen bromide occupies a unique role across research and manufacturing, prized for its selectivity and value in modern biosciences.

    Listen to direct user input, adapt process steps, and invest in people as much as instrumentation—these beliefs have driven lasting partnerships with our clients. Every customer who reports new research needs or unexpected results teaches us more than specifications or datasheets can reveal. By producing cyanogen bromide with an integrated approach that includes product quality, user safety, field feedback, and regulatory oversight, we set a standard not by default, but by design, refined through countless hands-on cycles on both the laboratory bench and the factory line.

    Day-to-day, as we watch new orders come in and old customers return, the story our cyanogen bromide tells is one of adaptation, respect for expertise, and shared commitment to progress. Keeping chemical production grounded in evidence, ethics, and expert consultation turns a hazardous reagent into an engine for innovation and reliability. Working with cyanogen bromide, we know what’s at stake, and we meet the challenge with knowledge drawn from practice—not just from the textbook.