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Cyclobutyl Bromide

    • Product Name Cyclobutyl Bromide
    • Alias cyclobutyl-bromide
    • Einecs 207-322-4
    • 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

    994191

    Productname Cyclobutyl Bromide
    Casnumber 4214-73-7
    Molecularformula C4H7Br
    Molecularweight 135.01 g/mol
    Appearance Colorless liquid
    Boilingpoint 104-106°C
    Density 1.419 g/mL at 25°C
    Refractiveindex 1.470
    Flashpoint 25°C (closed cup)
    Solubilitywater Insoluble
    Meltingpoint -80°C
    Purity Typically ≥98%
    Storagetemperature Store at 2-8°C
    Synonyms Bromocyclobutane
    Smiles C1CC(C1)Br

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

    Packing & Storage
    Packing Cyclobutyl Bromide, 100g, supplied in a tightly sealed amber glass bottle, labeled with hazard symbols and handling instructions.
    Shipping Cyclobutyl Bromide is shipped in tightly sealed, chemical-resistant containers to prevent leaks and exposure. It is classified as a hazardous material and must be transported following regulations for flammable and toxic substances. Appropriate labeling, documentation, and handling by trained personnel are required to ensure safety during storage and transit.
    Storage Cyclobutyl bromide should be stored in a tightly sealed container, in a cool, dry, well-ventilated area away from direct sunlight and incompatible substances like strong oxidizers. Store at room temperature, away from heat sources and ignition points. Ensure proper labeling and keep away from moisture. Use a chemical storage cabinet specifically designed for flammable and halogenated organic solvents.
    Application of Cyclobutyl Bromide

    Applications of Cyclobutyl Bromide in Industrial Manufacturing

    Cyclobutyl Bromide is a crucial building block for advanced organic synthesis that drives several key industrial sectors. As an established chemical manufacturer, we supply this material for highly specialized downstream processes that demand strict adherence to regulatory and production standards. Below we detail major application scenarios based on real-world industrial practice.

    1. Pharmaceutical Intermediate Synthesis

    Cyclobutyl Bromide finds core usage in the synthesis of small molecule drug candidates, especially as an alkylating reagent for the introduction of cyclobutyl groups. Research and commercial pharmaceutical manufacturers rely on it to construct intermediate scaffolds for CNS-active substances and certain antivirals. Process chemists leverage its reactivity profile under controlled halogenation and alkylation conditions, where regulatory compliance and impurity profiles are strictly monitored at each stage. Our QC and batch traceability align with finished dosage validation, supporting scalability from pilot plant through to GMP manufacturing.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • US FDA 21 CFR Part 210/211 (cGMP for Finished Pharmaceuticals)
    • EU GMP Part II (APIs)
    • ISO 9001:2015 for chemical manufacturing quality systems

    Typical usage ratio

    • 0.5–1.5 molar equivalents per target intermediate, adjusted based on side-reactions and desired yield.

    Downstream process integration

    • Introduced during early-to-mid-stage organic synthesis via nucleophilic substitution or alkylation reactions.
    • Handled in closed reactor systems with in-process analytical controls for residual halide and purity.

    Final product types

    • API intermediates (central nervous system drugs, antivirals, investigational new drugs)
    • Chiral building blocks for proprietary pharmaceutical synthesis
    • Advanced research compounds

    2. Agrochemical Active Ingredient Manufacturing

    The agrochemical industry uses Cyclobutyl Bromide for creating specialty intermediates required in the synthesis of selective herbicides and insecticide molecules. Its structural ring is vital for the development of active ingredients with controlled photodegradation and soil persistence. Formulation chemists utilize this intermediate under tightly controlled reaction parameters, implementing robust analytical verification to avoid carryover of brominated impurities, ensuring products meet environmental release and toxicity limits in agricultural contexts.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • ISO 17025 laboratory quality requirements
    • REACH (EC No. 1907/2006) registration and safety data regulations
    • National agrochemical authority registration (e.g., US EPA, EU Regulation 1107/2009)

    Typical usage ratio

    • 0.8–1.2 molar equivalents relative to primary nucleophile, tailored to reaction path and minimization of by-products.

    Downstream process integration

    • Employed as a ring-alkylation or halide-exchange reagent in intermediate stage reactors.
    • Reactor charge occurs under inert conditions, with continuous monitoring for bromide residues.

    Final product types

    • Herbicide actives (e.g., cyclobutyl-phenoxy derivatives)
    • Pyrethroid insecticide intermediates
    • Seed treatment precursors

    3. Specialty Polymer Monomer Preparation

    Advanced polymer producers use Cyclobutyl Bromide as a functional monomer precursor, introducing cyclobutyl side chains that impart unique mechanical and thermal properties to final resins and elastomers. The controlled halogen atom transfer enables living/controlled radical polymerizations. Integration at this stage determines end-use mechanical and surface characteristics in the automotive, electronics, and aerospace industries. Each batch undergoes verification for halide purity prior to polymerization to prevent structural defects and achieve consistent polymer chain architecture.

    Industry compliance standards

    • ISO 9001:2015 quality management for chemical intermediates
    • ISO 14001:2015 environmental management for synthetic processes
    • Specific sectoral regulations (e.g., automotive TS 16949 for related final products)
    • RoHS restrictions where final articles may be electric/electronic

    Typical usage ratio

    • 5–15% by weight as co-monomer for specialty resin formulations, adjusted for target molecular weight and chain architecture.

    Downstream process integration

    • Mixed during monomer feed stage prior to polymerization and initiator addition.
    • Purity and reactivity monitored to ensure successful grafting and copolymer composition.

    Final product types

    • High-performance engineering plastics
    • Thermal-resistant elastomers
    • Electronic encapsulation resins
    • Automotive lightweight components

    4. Fine Chemical and Perfume Intermediate Synthesis

    Manufacturers in the aroma and fine chemical sectors use Cyclobutyl Bromide to introduce saturated carbocyclic rings into complex molecules, creating intermediates for musky and woody odor compounds. Synthetic chemists leverage controlled substitution reactions to obtain high-purity intermediates with precise olfactory characteristics. Consistent quality and impurity control are essential to comply with IFRA limits and GHS hazard communication. Downstream processors often require custom packaging and traceability for continuous formulation batches.

    Industry compliance standards

    • IFRA (International Fragrance Association) Guidelines and Standards
    • REACH (Annex XVII) for restricted substances in fragrances
    • GHS (Globally Harmonized System) for labeling and hazard information
    • ISO 22716:2007 (Cosmetic GMP) for process hygiene

    Typical usage ratio

    • Routinely 0.9–1.1 equivalents per alcohol or amine, adapted to the required odor threshold of the final intermediate.

    Downstream process integration

    • Added during the key alkylation or substitution stage for perfumery molecule synthesis.
    • In-process analytical controls for bromine-containing by-products and aroma purity.

    Final product types

    • Fragrance intermediates for musky or woody aromas
    • Fine chemical building blocks for specialty esters and ketones
    • Custom aroma precursors for luxury perfumery

    5. Custom Synthesis in Advanced Materials R&D

    R&D teams in advanced materials rely on Cyclobutyl Bromide for the synthesis of bespoke organic compounds, where cyclobutyl moieties facilitate the study of unique conformational, photophysical, and electrochemical properties. Its entry point in custom synthesis workflows involves structure-activity investigations and development of model compounds for sensors, photovoltaics, and smart coatings. Labs track every batch by certificate of analysis, requiring high documentation levels, consistent with ISO/GLP environments.

    Industry compliance standards

    • OECD Good Laboratory Practice (GLP)
    • ISO 9001:2015 for research chemical supply
    • REACH compliance for R&D thresholds
    • Material Safety Data Sheet (MSDS) requirements for all shipments

    Typical usage ratio

    • Varies from 0.1–2.0 molar equivalents depending on synthetic pathway, molecule complexity, and required functionalization specificity.

    Downstream process integration

    • Used in target molecule assembly, typically in ring construction or fine-tuning of electronic properties.
    • Integrated at the advanced intermediate stage for subsequent modification or testing.

    Final product types

    • Photoresponsive organic materials
    • Advanced functional coatings
    • Research-grade organic semiconductors
    • Sensors and prototypes for academic and commercial proof of concept
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    Certification & Compliance
    More Introduction

    Cyclobutyl Bromide: Crafting Consistency and Pure Outcomes in Organic Synthesis

    Shaping High Standards from Start to Finish

    At our facility, we pursue tight control of every parameter while producing Cyclobutyl Bromide. For over ten years, our chemistry teams have devoted themselves to refining the synthesis of specialty bromides. Cyclobutyl Bromide, catalogued here under our internal reference CBB-4203, stands out for its structural integrity, clarity, and proven reactivity profile. We prepare it through direct bromination using regulated, low-moisture reaction chambers. By adjusting temperature ramp rates and stirring speeds, we maintain an even reaction and ensure the lowest possible range of di- and polybrominated byproducts.

    Chemical makers cannot afford variable results from a single batch. Subpar purity or excess water content blocks downstream transformations and clogs up the workflow for our end users in pharmaceuticals, materials, and agrochemical discovery. Even trace isomeric byproducts or unidentified halides can cause headaches during scale-up. We take these risks seriously—our in-process controls track halide ratios via GC, verify the molecular signature through NMR, and check residual solvents using Karl Fischer titration. All of these steps offer our clients a reliable, reproducible Cyclobutyl Bromide with a minimum assay above 98%.

    Addressing the Real Demands of Research and Production

    Chemists in medicinal research look to Cyclobutyl Bromide when targeting ring-expansion scaffolds, spirocyclic frameworks, and alkylation sequences. It forms a bridge between bench-scale curiosity and pilot plant feasibility. In contrast to straight-chain alkyl bromides, cyclobutyl's ring strain and conformational lock often produce cleaner, more predictable substitution reactions. This can be pivotal when making C–C bonds in drug candidates. Our customers in the process chemistry space notice the difference during scale-up, where reaction conditions sometimes expose hidden impurities or unexpected byproducts if starting materials are inconsistent.

    Other suppliers may combine raw materials in multipurpose vessels, risking cross-contamination with unrelated intermediates. We promote a closed-system approach and sterilized glassware for each new batch, limiting cross-reaction risks. Initial vacuum drying and molecular sieving snuff out residual moisture, preventing hydrolytic degradation. For custom requests, such as deuterated or isotopically enriched Cyclobutyl Bromide, our chemists switch glassware and line clean before moving raw through filtration and final crystallization. Worrying less about contamination frees up teams downstream to focus on molecular design, not rework or investigation.

    Meeting Stringent Purity Benchmarks

    Customers in advanced materials or API manufacturing monitor halide content down to parts-per-million. Our Cyclobutyl Bromide undergoes quality checks for not just the main molecular species, but also secondary brominated ring fragments. We baseline every batch against our in-house reference standard and document retention time using HPLC. Each drum leaving our plant ships with a signed analysis printout and lot traceability, enabling regulatory reporting and full backtracking. These records support users across biopharma, agricultural testing, and fine chemical development where trust in feedstock underpins months or years of downstream effort.

    Comparing Cyclobutyl Bromide to alkyl bromides such as n-butyl or tert-butyl shows how the cyclic backbone improves selectivity during both nucleophilic substitutions and metalation protocols. The four-membered ring’s natural strain raises its energy and makes it more reactive with a wide range of nucleophiles, from amines and alcohols to enolates. This feature is valuable whether developing pro-drug linkages, introducing labeled handles, or targeting enantioselective outcomes. By contrast, linear bromides sometimes overreact or trigger unwanted eliminations; cyclobutyl minimizes those risks, cutting down the need for protective groups and elaborate post-reaction purification.

    Supporting Users Beyond Simple Supplying

    We don’t simply hand over product and end contact. Our technical team consults daily with researchers and formulation experts. Some customers run into variable yields or ring-opening side reactions. Others struggle with workup, phase separation, or solvent removal after bromination. Every member of our technical crew has spent time on the benchside, so we offer real solutions rather than theoretical advice. For example, when a materials chemistry group encountered solubility shifts in mixed solvents, we helped adjust pH and co-solvent ratios across several trial runs, not just shuffling paperwork.

    Cyclobutyl Bromide finds use well beyond drug synthesis and small molecule research. Polymers and networked materials take on unique characteristics when this ring system gets embedded as a chemical handle. Silicone-modified resins crosslink with greater strength using cycloalkyl halides. Researchers report enhancements in surface energy, hydrophobicity, and UV resistance. We've worked directly with innovation teams in coatings and specialty adhesives, tuning Cyclobutyl Bromide’s profile—helping their formulations stick, repel, and last. Many of these technical advances start with a single spec of purity or a change in crystallization habit. The manufacturer’s hand in controlling the outcome is never minor.

    Environmental, Health, and Safety Focus

    Safety underpins everything—both in the plant and in the hands of users. Our manufacturing team trains regularly in containment and isolation, minimizing fugitive emissions. We recapture and scrub halogen streams generated during bromination, turning hazardous waste into reusable byproducts instead of off-gassing into the environment. Local regulatory agencies visit and review our logs. We treat their oversight not as a hurdle, but as confirmation that our handling of Cyclobutyl Bromide meets both the spirit and the letter of the law.

    On the user side, we provide the most current guidance about protective equipment and PPE. Spills and exposure won’t be ignored; we log every near miss, act on root causes, and share findings with both customers and suppliers. Sometimes clients come to us after struggling with poorly labeled imports or mysterious off-odors. Our transparency and rigor in documentation, from allergen status to batch-specific impurity profiles, set us apart from brokers and resellers. We see across the market how hidden hazards cost time, money, and trust—mistakes that can’t always be fixed after the fact.

    Understanding Application Differences and Performance

    Research chemists need reliability. Customers continually report that their product performance depends not just on chemical identity, but on batch-to-batch precision. Cyclobutyl Bromide, compared to analogous cyclopropyl and cyclopentyl bromides, shows very distinct reactivity trends. With cyclopropyl, the extra ring strain can trigger unwanted fragmentation or side-chain rearrangement, especially during base-mediated coupling. By contrast, cyclopentyl species drop reactivity, often forcing harsher conditions for substitution. Cyclobutyl sits in a sweet spot: its ring strain encourages clean, single-step displacement yet doesn’t implode under mild treatments.

    Our teams use real-world trial data to demonstrate these points. For example, one scale-up customer in peptide chemistry highlighted a 20% increase in intermediate yield when switching from a competitor’s mixed-alkyl source to our high-purity Cyclobutyl Bromide. The key difference was lower trace alkene and halide contaminants in our offering, confirmed by their in-house analytical team using UPLC/QTOF. Gains like these don’t just streamline workflow—they drastically cut purification costs and reduce solvent waste. The lab results matter, but the economic impact often resonates even more strongly.

    Stability and Storage Experience

    Cyclobutyl Bromide stores best below 8°C in tightly sealed amber glass. Too many times, we’ve watched users lose potency or create colored decomposition products by storing near light or leaving caps loose. Some wrongly believe that sealing isn’t so critical for this compound because of its low volatility, until they encounter a sticky, brown residue in the storage vessel. We designed our packaging—teflon-sealed septa, wide-mouth jars, and tamper-resistant closures—through direct feedback from frequent users. Once delivered, Cyclobutyl Bromide remains as we pack it: sharp white, flowing freely, and ready for precise dosing.

    Our plant operators monitor product excursion and the chain of custody on every box. Regular audits mean that mislabeled or mishandled inventory never reaches the end user. If a lab tech contacts us about off-odor, haziness, or other visual changes, we analyze a retain sample from the original batch and recommend next steps. Early intervention solves most problems before they become lab-scale disasters, and we do not delay giving honest answers about replacement or troubleshooting.

    Scalability from Lab to Plant

    Working production chemists don’t just care about grams; they need reliable, straightforward transitions to pilot kilos and intermediate tonnage. Our Cyclobutyl Bromide matches on both purity and physical properties at all scales. Granular control over column chromatography and distillation let us dial in the dryness and reduce coloring agents. In large-scale reactors, we map heat transfer and agitation profiles for scalable, reproducible output. Keeping technical details close to the chest never helps our customers. We routinely share titration curves, isomer assays, and thermal loss studies with development partners moving from bench to bulk.

    One recent process validation project highlighted why these efforts matter. Researchers from a European pharma partner requested sub-ppm chloride limits. By shifting washing protocols and switching to high-purity solvents, our team achieved certification three cycles earlier than projected. Results like this flow from habits—tracking every tank, keeping logs by hand and electronically, and making line operators part of the problem-solving team.

    Responding to Regulatory and Documentation Demands

    Our compliance experts monitor developments in domestic and international regulations. Cyclobutyl Bromide, used as both intermediate and reference standard, sits within a regulatory Gray area in some jurisdictions. We manage pre-clearances for hazardous transport and maintain up-to-date safety evaluations for customs authorities. Should ecotox metrics or new workplace exposure limits affect our workflows, we update documentation and retrain staff without drama. Our partners rely on these documents: customers tell us that missing or outdated regulatory reports from brokers have shut down entire project timelines, sometimes for weeks.

    Full batch records accompany every order. We avoid generic platitudes and, instead, provide detailed impurity mapping, spectral overlays, and residual solvent profiles. Our technical chemistry team tries new workflows in-house before suggesting changes to clients. If a customer requires tailored analytical support for a regulatory filing or patent application, we share underlying data for their own attorneys or compliance officers.

    Why Origin Matters: Direct Manufacturer Impact

    Every step we take in making Cyclobutyl Bromide impacts the person at the receiving bench. Simple practices, from filtered compressed air to weekly equipment calibration, shrink variance and build trust. Unlike contract packagers or trading houses dealing in open-market stock, we make, test, and ship every batch ourselves. This comes through when labs report clean chromatograms, easy phase separation, and predictable physical constants in daily use.

    We answer calls from customers frustrated by unexpected odor, yellowing, or off-spec solubility from third-party goods. Every drum we fill represents a promise: clear chain of custody, firm controls, and support by staff who understand the chemistry as well as the paperwork. New requests for alternate packaging, isotope enrichment, or cooperative process troubleshooting draw from shared experience—not a script, but hands-on detail from actual runs. Real solutions grow from familiarity and a willingness to back up words with measurable outcomes.

    Continuous Innovation and Future Outlook

    We invest each year in pilot work for new cycloalkyl halides, often exploring C-5 or higher-ring analogs using insights from Cyclobutyl Bromide feedback. Environmental pressures continue to push us: lower residuals, more efficient purification, fewer solvent types, less energy per kilogram. We take cues straight from users, design new sensors for real-time impurity tracking, and revise procedures to keep quality moving upward. Where clients hit regulatory snags or scale-up bottlenecks, we partner with process chemists and plant managers to solve the root of the trouble.

    From medical innovators to industrial giants, users depend on reliability and rigorous oversight. Cyclobutyl Bromide isn’t just another line on a reagent spreadsheet—it’s a springboard for making critical discoveries, a source material for thousands of downstream transformations, and a test of any manufacturer’s professionalism. Our pride rests not in marketing claims, but in hand-checked records, open communication, and daily attention to customer needs.

    Conclusion: Experience Shapes Every Batch

    Cyclobutyl Bromide shows what years of manufacturing expertise can accomplish. Only a direct producer appreciates how seemingly minor details—ambient humidity, rotor speed, line cleanliness—ripple through to affect the final product. By staying engaged with users, evolving based on feedback, and always documenting as well as delivering, we push beyond mere compliance into real partnership. Every bottle sent from our facility proves that consistency is possible in chemical supply, with human touch and hard science working together.