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5-Bromobenzoxazole-2-Thiol

    • Product Name 5-Bromobenzoxazole-2-Thiol
    • Alias 5-Bromo-2-benzoxazolinthione
    • Einecs 841-498-9
    • 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
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    Specifications

    HS Code

    507215

    Chemical Name 5-Bromobenzoxazole-2-Thiol
    Cas Number 387334-52-5
    Molecular Formula C7H4BrNOS
    Molecular Weight 230.09
    Appearance Yellow to orange crystalline powder
    Melting Point 178-182°C
    Purity Typically >98%
    Solubility Soluble in DMSO, DMF; slightly soluble in water
    Storage Conditions Store at 2-8°C, protect from light and moisture
    Smiles C1=CC2=C(C=CN2S)C(=C1)Br
    Inchi InChI=1S/C7H4BrNOS/c8-4-1-2-5-6(3-4)10-7(9)11-5/h1-3,9H

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

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    Application of 5-Bromobenzoxazole-2-Thiol

    Applications of 5-Bromobenzoxazole-2-Thiol in Industrial Manufacturing

    As the developer and manufacturer of 5-Bromobenzoxazole-2-Thiol, we supply this high-purity heterocycle to customers in several critical downstream industrial sectors. Below we outline proven application scenarios, with specific focus on industry standards, formulation guidance, process integration points, and representative end products.

    1. Pharmaceutical Intermediate for Cephalosporin Antibiotic Synthesis

    Our material serves as a thiol-containing heterocycle for the synthesis of specific cephalosporin antibiotics, utilized by advanced API (Active Pharmaceutical Ingredient) producers. Its role is focused on nucleophilic substitution, forming sulfur bridges that impart essential activity to targeted cephalosporin derivatives. Large-scale users will blend in dedicated reactors using controlled atmospheres to avoid oxidation, ensuring high yields in subsequent condensation and cyclization stages of API fabrication.

    Industry compliance standards

    • ICH Q7A Good Manufacturing Practice Guide for APIs
    • European Pharmacopoeia monographs for cephalosporin APIs
    • US FDA 21 CFR Part 210/211 (Drug Manufacturing GMP)
    • Chinese Pharmacopoeia (ChP) for raw material quality

    Typical usage ratio

    • Generally added at 0.9–1.1 molar equivalents relative to core cephalosporin intermediates; adjusted to control sulfur incorporation and optimize overall yield based on batch size and scale-up kinetics.

    Downstream process integration

    • Introduced in nucleophilic substitution reactors after acyl side-chain activation; followed by neutralization and filtration steps before purification and solvent-switching.

    Final product types

    • Bulk cephalosporin API powders (e.g., cefpodoxime analogues)
    • Sterile injectable drug substances
    • Oral antibiotic granules and capsules

    2. Specialty Dye and Optical Brightener Intermediate for Technical Textiles

    Many manufacturers in the textile chemicals sector utilize this compound as a functional intermediate for the synthesis of benzoxazole-derived optical brighteners and specialty dyes. These colorants and whiteners, designed for technical fabrics and high-performance yarns, use the heterocycle’s unique thio functionality to improve dye affinity and brightness retention, particularly in high-wash textile and synthetic fiber applications.

    Industry compliance standards

    • OEKO-TEX® Standard 100 for restricted substances
    • ZDHC MRSL (Zero Discharge of Hazardous Chemicals)
    • EU REACH—Annex XVII for allowable dye precursors
    • ISO 9001:2015 for quality-managed production

    Typical usage ratio

    • Formulators add 5-Bromobenzoxazole-2-Thiol at 0.8–1.3% (w/w) in brightener and dye precursor synthesis; final dye bath usage further diluted according to textile substrate and application method.

    Downstream process integration

    • Added to the coupling or condensation stage of dye synthesis under alkaline or neutral conditions; after filtration, downstream blending with dispersants or resins for textile coating or fiber spinning.

    Final product types

    • High-brightness optical brightener powders
    • Sulfur-containing disperse and acid dyes
    • Fluorescent brightener masterbatches for polyester fibers

    3. Electronic Chemicals—Precursor for Photolithography Resists

    Leading semiconductor chemical companies employ our material as an intermediate in the synthesis of sulfur-bridged benzoxazole derivatives, which impart controlled reactivity and UV absorption profiles in advanced photoresist formulations. This enables high-resolution patterning for microelectronics and flat-panel display manufacturing, particularly in negative-tone resists for advanced-node wafer processes.

    Industry compliance standards

    • SEMI C93—specifications for photoresist materials
    • ISO 14644-1 cleanroom process control
    • RoHS/REACH compliance for restricted substances in electronics

    Typical usage ratio

    • Introduced at 0.5–0.9 molar equivalents in the synthesis of sulfur-containing negative resists; loadings vary depending on resist target properties (resolution, sensitivity, solubility parameters).

    Downstream process integration

    • Incorporated at the functionalization step of resist raw material synthesis prior to polymerization; followed by blending with photoacid generators, solvents, and crosslinkers in cleanroom environments.

    Final product types

    • Spin-coated photoresist chemicals for semiconductor wafer fabrication
    • Photoresist coatings for LCD/LED panel manufacturing
    • Precursor concentrates for advanced packaging resists

    4. Corrosion Inhibitor Synthesis for Industrial Lubricants and Coolants

    Our compound is used by manufacturers of high-performance lubricants and industrial coolant additives as a reactive intermediate for the production of thio-functional corrosion inhibitors. Leveraging the selective reactivity of the 5-bromobenzoxazole-2-thiol core, formulators are able to synthesize additives that protect ferrous and non-ferrous metal surfaces in harsh environments, particularly in automotive, heavy machinery, and process industry applications.

    Industry compliance standards

    • ASTM D665/D130 (lubricant corrosion resistance)
    • DIN 51517-3 for industrial gear oil additive safety
    • EU REACH Annex XIV—authorisation for specific anti-corrosive substances
    • ISO 14001 for environmental management in additive production

    Typical usage ratio

    • Typically loaded at 0.5–1.7% by weight in additive concentrate preparations; dosage in finished lubricant or coolant depends on target metal type, operating temperature, and water hardness.

    Downstream process integration

    • Forwarded into additive synthesis reactors before final neutralization; after reaction, blended with base oils or glycol solutions and subjected to multi-stage filtration prior to packaging.

    Final product types

    • Concentrated corrosion inhibitor blends for metalworking fluids
    • Anti-rust additives in industrial lubricants
    • Long-life coolant formulations for heavy vehicles
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    More Introduction

    5-Bromobenzoxazole-2-Thiol: Precise Science Driving Useful Innovation

    A Practical Perspective on Molecular Progress

    In laboratories worldwide, chemists often seek compounds that bring together both unusual structure and practical application. 5-Bromobenzoxazole-2-thiol fits this bill. Its backbone, the benzoxazole ring, isn’t new to organic chemistry. Yet, adding a bromine atom at position five and a thiol group at position two unlocks a range of functions that standard benzoxazoles lack. As someone who spent years running synthesis reactions in an academic lab, I’ve come to respect how a single atom or group can change a compound's entire behavior. Here, the subtle blend of bromine and sulfur delivers options for researchers thinking far beyond textbooks.

    Understanding the Substance Beyond the Label

    Chemists tend to look past catalog entries, focusing instead on the core questions: What can I build with this compound? How does it shape reactions or products? 5-Bromobenzoxazole-2-thiol doesn’t just slot into old roles; it brings new flavors to research settings. The model's purity, often reaching as high as 98%, signals readiness for advanced synthetic work. Even small impurities can derail a key step in pharmaceuticals or in material science, so confidence in purity saves countless headaches. In my own work, discovering that a batch delivered crisp melting points and reproducible spectra made testing theories less stressful. Reliable composition limits surprises down the line.

    Stepping Into Real Research Tasks

    A compound like this rarely ends up as the hero of consumer-ready products. Its talents shine during the early and middle stages: crafting molecules for further development or unlocking pathways in high-end materials chemistry. Brominated heterocycles like this serve as strong starting points for constructing bigger molecular frameworks. Medicinal chemists often turn to such scaffolds when designing drug candidates because the sulfur atom opens room for building stronger, more selective binding sites. This isn’t just theory—published studies draw direct lines between incorporating benzoxazole-thiol motifs and enhanced receptor binding or improved pharmacokinetics. I remember times in group meetings where a single substitution took a faltering candidate and put it back on track. The bromine atom, in particular, can stabilize intermediates and enable transformations unavailable to non-brominated variants.

    Key Differences: It’s All in the Details

    Comparing two molecules with the same root name sometimes feels trivial, but real-world work shows otherwise. Take basic benzoxazole-2-thiol—useful, yet it lacks some of the versatility researchers crave. Switch one hydrogen for bromine at position five, and you open up more doors in cross-coupling reactions. Bromine acts as an excellent leaving group, so coupling with various partners using Suzuki or Buchwald–Hartwig protocols becomes feasible. From my experience, brominated versions speed up such reactions and increase yields, keeping costs in check and timelines realistic. That’s invaluable inside both contract research organizations and academic labs where time sinks mean lost funding or delayed results.

    Specifications That Actually Matter in the Lab

    In routine lab life, I learned that simple measurements often tell a bigger story. Melting point consistency alone helps judge product quality—if a supplier promises 180–182°C and the batch matches, you know less time will be wasted on troubleshooting. Spectroscopic data (like NMR peaks or mass accuracy) is trusted currency in the lab, and for 5-Bromobenzoxazole-2-thiol, it’s nice to have the expected values confirmed. This isn’t just about box-ticking: a pure, well-characterized starting point holds value out of proportion to its appearance on a datasheet. I’ve watched colleagues spend hours purifying an intermediate, only to realize a minor impurity from the commercial starting material threw everything off balance. With trusted specs, more projects get finished, senior researchers give the green light faster, and funding proposals go smoothly.

    Applications in Synthesis: More Than a Building Block

    Most users first encounter this compound prepping intermediates for new medications or specialty dyes. The thiol group proves reactive enough for custom modifications—think thioether formation or targeted substitutions impossible with oxygen or nitrogen analogs. This flexibility shortens multi-step syntheses. In material research, benzoxazole derivatives feature in developing OLED components and specialty polymers; brominated thiols introduce controlled cross-linking, tweaking electronic or mechanical properties in ways other scaffolds cannot match. During one collaboration, our team found that introducing bromobenzoxazole-thiol moieties into a polymer backbone led to enhanced thermal resistance without sacrificing processability. The same logic applies to surface science, too—many self-assembled monolayers benefit from sulfur’s affinity for gold substrates, and the compound’s distinct aromatic core offers anchor points for further modification.

    Safety and Handling: Lessons Learned on the Bench

    Thiol compounds demand some respect on the bench. Many have sharp odors and show a tendency toward skin or respiratory irritation. This one is no exception, although careful transfer under a fume hood and glove use mitigate most issues. I remember colleagues commenting on persistent odors after particularly long synthesis days; using sealed vials and rapid weighing reduced complaints and kept the work area pleasant for everyone. Lab protocols usually call for single-use pipettes or spatulas, so accidental transfer between bottles rarely happens. For those scaling up or running parallel reactions, strict inventory and waste tracking help maintain both safety and regulatory compliance. In my own practice, emphasizing the importance of PPE and written checklists kept the team focused when deadlines tempted cutting corners.

    Environmental Considerations in Modern Chemistry

    Interest in green chemistry rises every year, and brominated aromatics catch scrutiny. Research trends push for minimizing waste and optimizing conditions to avoid excessive solvent use or byproduct formation. Watching my younger colleagues design more atom-economical syntheses—sometimes using flow reactors or aqueous solvent systems—inspired confidence that even classic heterocycles like this can find a place in cleaner processes. Many synthesis plans now feature in-line analysis to catch excess reagents, cutting down the overall environmental footprint. Suppliers offering cleaner purification or solvent recycling increasingly get the nod from lab managers and grant reviewers alike, showing that choosing the right starting material can tip broader sustainability efforts in the right direction.

    Pitfalls and Practical Challenges

    Every compound offering unique reactivity brings hurdles. The introduction of bromine can sometimes make purification tricky, especially when similar halogenated byproducts appear. During one project aimed at generating functionalized dyes, a batch of starting material held onto trace impurities that mimicked product in preliminary TLC and NMR, leading to costly reruns. Teams need quality control routines and analytical vigilance—good single-batch screening saves both time and morale. Shelf life matters, too; thiol groups tend to oxidize over months if opened and closed frequently, something I learned the hard way after returning to an old bottle for a follow-up experiment. Now I’d always record open dates and store smaller aliquots in nitrogen-flushed vials to limit air exposure.

    Global Demand and Availability: Chasing the Right Batch

    Specialty chemicals seldom enjoy mass production, so sourcing a timely and reliable supply can shape the success of a research program. Some years ago, our group almost lost a semester’s work to a back-ordered heterocycle that took months to arrive. Many established suppliers monitor their inventory closely and communicate lead times transparently, but smaller vendors often struggle to meet urgent requests. Buying in bulk seems tempting, yet with reactive thiol groups present, even professional storage environments can’t prevent slow oxidation or polymerization. This underscores the value of forming good relationships with vendors; those offering technical support and sample documentation make repeat purchasing simpler. A trusted supplier keeps projects alive during crunch time.

    Cost Considerations and Budgeting Reality

    Pricing for specialized molecules like 5-Bromobenzoxazole-2-thiol reflects both its synthetic complexity and niche demand. Academic grants rarely cover excess waste, so researchers prize buying only what’s needed. My own grant writing increasingly factored in the need to justify every reagent purchase with specific experimental aims. For contract chemists, delivering on-budget results distinguishes capable teams from those perpetually over cost. Some groups experiment with in-house synthesis, but the challenge of managing robust purification and characterization procedures draws many back to reputable suppliers. Comparing quotes, checking batch analysis, and negotiating minimum order quantities made a real difference where I worked; no one wants to be left with a shelf full of expensive, unused material.

    Building Value in Interdisciplinary Research

    Complex molecules like this find their place in boundary-pushing research. Medicinal chemistry, polymer design, and materials science each demand reliable, characterized starting points for new projects. At the intersection of these fields, collaboration often starts over shared bottle labels. I remember a time our team paired up with a physicist exploring photoluminescent materials; our focus on organic reactions overlapped naturally with their tests for quantum yields and device lifetime. 5-Bromobenzoxazole-2-thiol became a bridge, not just for chemical synthesis but for cross-disciplinary dialogue and problem-solving. The molecule’s versatility enabled creative experimentation, leading to data that wouldn’t have emerged in isolation.

    Continuous Progress and Future Directions

    Every year, journals showcase fresh uses for benzoxazole systems. Bromination trends reflect shifts in drug discovery as well as hardware design. The landscape changes fast: old approaches get challenged as new demands emerge for electronics, medical diagnostics, and green technologies. Following this compound’s trajectory means keeping an eye on patent filings and open-access datasets. Rising interest in targeted therapies and smarter sensor materials will likely push for new functionalizations built on this core. Students just starting out in research will encounter these motifs in coursework, then pause to consider real-world applications.

    Field Experiences: Bridging Knowledge and Practice

    Talking with colleagues across academia and industry, I noticed everyone values on-the-ground feedback more than promotional copy. Reports of strong batch-to-batch consistency, a willingness from suppliers to share analytical data, and technical support in troubleshooting—these matter more than grand promises. I taught junior researchers to check every certificate of analysis and to run comparison reactions at small scale first. More than once, I discovered that what looked like a costly setback—a late delivery, a minor impurity—offered the chance to build resilience on the team. Sharing notes across institutions and attending technical forums helped refine our approach, from safer handling practices to quicker reaction optimization.

    Potential Solutions for Common User Challenges

    Any lab depending heavily on a single intermediate runs the risk of bottlenecks. Recognizing this, labs often set up backup suppliers and reserve small sample lots for critical experiments. Use of standardized storage containers, inert environment transfer, and timely re-purchase orders all help avoid stockouts. Investing in low-cost moisture absorbers or nitrogen purging pays back by improving reactivity consistency, especially when running sensitive transformations involving thiols. Scheduling regular training for researchers about hazards related to handling brominated and thiol-containing substances minimizes exposure incidents. On a structural level, advocating for grant-supported bulk purchases can lower unit costs while shared inventory platforms across research groups limit waste.

    Conclusion

    Experience shapes respect for specialized tools. 5-Bromobenzoxazole-2-thiol, with its carefully engineered structure and purposeful reactivity, makes advanced projects not only possible but more reliable. From speeding up reaction sequences to underpinning breakthroughs in high-tech fields, its contribution rests in honest, repeatable performance. Chemistry rewards those who dive into details, trust their sources, and keep an eye on practical hurdles—qualities reflected in researchers who reach for this compound with a clear vision and a steady hand.