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5-(2-Bromophenyl)-1H-Tetrazole

    • Product Name 5-(2-Bromophenyl)-1H-Tetrazole
    • Alias 5BPT
    • Einecs 824-314-2
    • 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

    339054

    Product Name 5-(2-Bromophenyl)-1H-Tetrazole
    Cas Number 18039-43-9
    Molecular Formula C7H5BrN4
    Molecular Weight 225.05 g/mol
    Appearance White to off-white solid
    Melting Point 163-165°C
    Purity ≥98%
    Solubility Slightly soluble in DMSO, DMF
    Chemical Class Tetrazole derivative
    Smiles c1ccc(c(c1)Br)c2nnn[nH]2
    Inchi InChI=1S/C7H5BrN4/c8-6-3-1-2-5(4-6)7-9-11-12-10-7/h1-4H,(H,9,10,11,12)
    Storage Condition Store at 2-8°C, protected from light and moisture
    Synonyms 2-Bromophenyl-1H-tetrazol-5-yl

    As an accredited 5-(2-Bromophenyl)-1H-Tetrazole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White, screw-capped glass bottle labeled "5-(2-Bromophenyl)-1H-Tetrazole, 10 grams" with hazard symbols and handling instructions.
    Shipping 5-(2-Bromophenyl)-1H-Tetrazole is shipped in tightly sealed, chemical-resistant containers to prevent moisture and contamination. It is packed with appropriate hazard labeling and transported under ambient conditions, following regulations for handling hazardous organic compounds. Material Safety Data Sheet (MSDS) accompanies the shipment for safe handling and emergency measures during transit.
    Storage 5-(2-Bromophenyl)-1H-Tetrazole should be stored in a tightly sealed container, protected from light and moisture. Keep it in a cool, dry, and well-ventilated area, ideally at room temperature (15–25°C). Avoid exposure to heat, ignition sources, and incompatible substances. Follow standard laboratory safety protocols, and store away from strong acids, bases, and oxidizing agents to ensure chemical stability and safety.
    Application of 5-(2-Bromophenyl)-1H-Tetrazole

    Applications of 5-(2-Bromophenyl)-1H-Tetrazole in Industrial Manufacturing

    5-(2-Bromophenyl)-1H-Tetrazole serves as a specialized intermediate in several demanding industrial sectors. As the original manufacturer, we support key downstream producers with strict compliance, precise formulation control, and batch reproducibility. The following major application fields reflect current commercial scale use in global markets.

    1. Pharmaceutical API Synthesis: Sartans (Angiotensin II Receptor Blockers)

    This tetrazole compound is a core synthon for manufacturing sartan-class antihypertensive agents such as losartan, valsartan, and candesartan. The tetrazole ring forms part of the bioactive structure, enabling receptor binding. Downstream pharmaceutical plants introduce it within multi-step API synthesis, using highly regulated good manufacturing practices (GMP). Strict impurity profile management and traceability govern every batch. The purity grade, water content, and residual solvent specification are predefined by the end-user’s validated route. Manufacturers prefer this material due to its consistent batch lot quality and established regulatory acceptability.

    Industry compliance standards

    • ICH Q7A GMP for active pharmaceutical ingredients
    • European Pharmacopoeia (Ph. Eur.) and United States Pharmacopeia (USP) API monograph cross-reference
    • FDA 21 CFR part 210/211 for pharmaceutical manufacturing controls
    • EMEA/CHMP guidelines for impurity profiles and solvent residues

    Typical usage ratio

    • 10–16% by molar proportion relative to target sartan backbone; exact stoichiometry adjusted to minimize unreacted tetrazole and maximize yield over multi-step process

    Downstream process integration

    • Introduced at the tetrazole formation stage, typically under phase-transfer catalysis or copper-catalyzed conditions for C–N bond formation
    • Reacted with intermediate halides or boronic acid derivatives for coupling
    • Stage often followed by crystallization and washing to remove excess starting material and copper residues

    Final product types

    • Losartan potassium API
    • Valsartan API
    • Candesartan cilexetil API
    • Finished tablets and oral dosage forms (after further processing)

    2. Agrochemical Active Ingredients: Tetrazole-Containing Fungicides and Herbicides

    Agrochemical formulators rely on tetrazole derivatives as critical building blocks for certain novel fungicidal and herbicidal active ingredients. The brominated phenyl tetrazole is valuable for synthesizing pyrazole-tetrazole hybrid scaffolds, providing molecular rigidity and environmental stability. Commercial-scale processes involve coupling this intermediate with halogenated aromatic rings or heterocycles via Suzuki or Buchwald-Hartwig cross-coupling methodology. Residual levels of raw material and byproducts are strictly monitored to satisfy agrochemical safety regulations and import/export compliance in key regions.

    Industry compliance standards

    • FAO/WHO recommended procedures for pesticide ingredient manufacturing
    • ISO 9001:2015 quality management systems
    • REACH (EC) No 1907/2006 for registration and downstream user obligations for chemical safety
    • U.S. EPA Pesticide Registration and Product Chemistry guidelines

    Typical usage ratio

    • 5–11% by weight in the targeted agrochemical molecule synthesis step; the actual ratio depends on the required substitution pattern and product yield requirements

    Downstream process integration

    • Added during the heterocycle-coupling step in pesticide intermediate synthesis
    • Incorporated into the final condensation or cyclization stage, prior to final formulation blending and granulation
    • Excess unreacted material removed via liquid-liquid extraction and purification columns

    Final product types

    • Tetrazole-substituted pyrazole fungicides
    • Herbicidal active ingredients for post-emergence application
    • Technical-grade actives for further downstream formulation (wettable concentrates, SCs)

    3. Specialty Organic Synthesis: Ligand and Heterocycle Building Block for Fine Chemical Producers

    Custom synthesis laboratories and fine chemical producers employ this molecule as a functional synthon for ligand development and construction of high-value heterocycles used in pharmaceutical and material science R&D. The unique bromophenyl-tetrazole structure enables selective functionalization, and acts as a precursor for further cross-coupling, Suzuki-Miyaura, and Sonogashira reactions. Reaction engineers monitor purity and isomeric control to maintain catalytic performance and reproducibility in complex chemistry, while customers conduct strict QA on received lots for structural integrity and spectral identity.

    Industry compliance standards

    • ISO 9001 for traceability and batch record-keeping
    • GHS/CLP labeling and SDS communication requirements (Globally Harmonized System)
    • REACH compliance for research and development quantities
    • CFR Title 40 for chemical reporting and handling where applicable

    Typical usage ratio

    • 3–10% by molar amount applied as limiting reagent or as part of stepwise synthetic assembly, adjusted for the required yield and downstream catalyst requirements

    Downstream process integration

    • Used during early-stage ligand assembly for transition-metal catalyst systems or as an intermediate for advanced heterocycle frameworks
    • Dissolved in polar aprotic solvents for cross-coupling or metalation reactions
    • Material recovery and purification through recrystallization or preparative chromatography

    Final product types

    • Customized ligands for homogeneous catalysis
    • Intermediates for specialty APIs and diagnostic reagents
    • Building blocks for research chemicals and molecular probes

    4. Material Science: Polymer and Resin Chain Modifiers for Advanced Performance Materials

    Manufacturers in the high-performance polymer sector utilize this compound as a chain-end or pendant-group modifier to engineer resins and functional polymers with tailored electrical, thermal, or adhesive properties. The aromatic and tetrazole moieties introduce polarity and possible coordination sites, which are exploited in polyimide, epoxy, and advanced adhesive formulations. Process chemists control dosage and incorporation conditions to balance processing stability with targeted final material features. Post-functionalization techniques ensure minimal free residuals, supporting downstream QC for specialty electronics and aerospace applications.

    Industry compliance standards

    • ISO 14001 environmental management for chemical handling
    • RoHS Directive 2011/65/EU for electronic components free of restricted substances
    • REACH registration for polymer ingredient use
    • ASTM D256 and D638 for mechanical property characterization post-modification

    Typical usage ratio

    • 0.5–3% by weight as a co-monomer or chain-end functionalizer; ratio adjusted for required polarity, cure profile, and end-use property targets

    Downstream process integration

    • Introduced at pre-polymerization stage for chain extension or at the final formulation to impart pendant tetrazole units
    • Mixed under inert atmosphere to avoid oxidative degradation
    • Final material purification uses hot filtration or solid-phase extraction to remove unreacted compound

    Final product types

    • High-temperature polymers for electronic insulation
    • Specialty epoxy adhesives for aerospace and automotive sectors
    • Functionalized resin pellets for precision molding
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    Certification & Compliance
    More Introduction

    Exploring the Qualities and Applications of 5-(2-Bromophenyl)-1H-Tetrazole

    Delivering Consistency in Chemical Manufacture

    Our work in preparing 5-(2-Bromophenyl)-1H-Tetrazole has always demanded a focus on tight control at every stage. This compound, best described by its bromo-phenyl-substituted tetrazole structure, brings together a strong aromatic ring and a robust tetrazole core. That combination stands at the center of its reactivity profile. We have spent years tuning our process—pairing precise temperature management with well-chosen reaction times—to keep unwanted isomers and residual by-products far below any detectable threshold.

    Specification and Model

    Our production output consistently shows a sharp melting point within a narrow range, confirming the identity and purity of 5-(2-Bromophenyl)-1H-Tetrazole. Most batches come out as a pale, off-white powder. Typical purity, as confirmed by HPLC and NMR, exceeds 98.5%. Moisture levels stay controlled below 0.5% w/w, which cuts down on risk of caking and keeps batch-handling smooth. Particle size matters to many customers focused on downstream reactivity, so we monitor median diameter inside the 80–150 µm window unless clients specify otherwise. These facts reflect years of feedback from partners blending this compound into more complex formulations.

    Why Quality Control Matters in This Product

    In our experience, minor impurities in this kind of tetrazole can trigger unexpected side reactions, especially when moving from lab-scale to pilot or commercial plants. Trace contaminants, not always visible in the early days, have led to costly batch failures during regulatory audits and scale-up trials. For us, that drove regular investment in higher-sensitivity instrumentation and development of robust cleaning procedures. We do not take shortcuts with wash cycles, nor do we cut back on drying times. Even after so many successful campaigns, our technical team finds the tightest control at this stage pays back every quarter.

    The Niche that 5-(2-Bromophenyl)-1H-Tetrazole Fills

    Chemically, the 2-bromophenyl substitution not only tweaks the reactivity pattern compared to its unsubstituted or para-bromo cousins but also modifies steric hindrance across the molecule. This property proves vital when researchers design pharmaceuticals or functional materials, seeking unique orientation of transition states or site-selective reactivity. Our own collaborations with public and private labs have revealed key differences: the ortho-bromo group affects kinetics in cyclization and coupling reactions, giving rise to novel heterocycles and substituted azoles not easily accessible through other intermediates. In particular, several patented kinase inhibitors rely on this specific scaffold, and our feedback loop with formulators has sharpened our process for maximum monotetrazole content.

    Applications: Beyond Just a Building Block

    Most often, customers seek this substance for its reliable performance in multi-step synthesis, particularly where safety and regulatory expectations rule out less selective or more hazardous reagents. One major application area lies in the production of pharmaceutical intermediates; because the bromine atom confers unique exit vectors and electronic effects, several high-value lead compounds include this unit within their core. Organic electronics and specialty agrochemicals also account for a growing share of orders; here, typical end-users value minimal halogen migration and the predictability of ring-opening by established palladium-catalyzed coupling methods.

    Isomer-related selectivity stands out as a frequent challenge. Our compound’s ortho-bromine group leads many transitions to proceed along different pathways than what is observed using the meta- or para- isomers. Down the line, this influences both yield and the number of purification steps. Over years, we have experimented with various process tweaks, such as solvent choices and buffer systems, to discourage debromination or tetrazole ring contraction. Through these developments we have reduced the amount of unwanted by-product below typical industry thresholds, which has enabled clients to scale with fewer downstream headaches.

    Manufacturing Insights: Steps that Make the Difference

    We rely on a synthetic approach rooted in diazotization of ortho-bromoaniline, followed by cyclization under strictly controlled acidic conditions. Our operators have learned the hard way not to rush addition rates, especially at industrial scale. Rapid charging increases risk for exotherms, clumping, or formation of persistent colored impurities that require extra effort to remove. Our solution has been steady, data-driven process ramping, with several in-line sensors tracking temperature, pH, and reaction completeness.

    Standardization matters less here than knowing how to respond to real-world variability. Feedstock quality can swing sharply depending on time of year or upstream supplier, so our raw material inspection program includes additional tests for all incoming lots. More than once, testing has caught sub-spec aniline, averting rework on a whole campaign. Waste treatment requires extra attention due to the mixed halogen content and nitrogen load. Our environmental technicians, who train regularly on the handling of hydrazoic acid byproducts, have managed to keep emissions below regulatory minima through rigorous flushing protocols and advanced scrubber technology.

    How Our Product Stands Apart

    We have compared our 5-(2-Bromophenyl)-1H-Tetrazole against other commercial samples sourced both domestically and abroad. Often, subtle differences show up in handling properties: some competitors’ powders clump after weeks in storage, or retain a faint off-odor from incomplete solvent removal. Our focus on thorough post-synthesis workup pays off here, so clients regularly report easier weighing, smoother blending, and improved shelf stability. These improvements come not from luck, but from years of feedback and iterative upgrades. Batch-to-batch traceability goes back to the earliest raw material drumming, allowing for easy root-cause analysis if any deviation occurs.

    We also take pride in our rapid documentation and transparent lot release. Each certificate of analysis reflects not just a static set of numbers but an ongoing commitment to improvement: out-of-spec samples are never released, and process improvements roll out as they are validated, not hoarded for annual review. We have learned that this responsiveness helps end-users avoid downtime and taste real cost savings, whether their context is pharma R&D or non-pharma advanced materials.

    Handling, Storage, and Transport: Drawing on Experience

    Hazardous properties demand a combination of respect and routine. We only use packaging that resists moisture pickup and shields against cross-contamination—not out of theoretical concern, but because mishaps can still happen. Years ago, a minor packaging fault during monsoon season caused a loss of product integrity and triggered a quality hold that lasted for weeks. Since then, packs undergo staged stress tests to simulate transit shocks, humidity, and even accidental crushing. Freight partners now receive clearer handling sheets; in over five years, no repeat incidents have occurred.

    Only a consistent cold chain saves sensitive materials from being lost to degradation or clumping, but we’ve learned not to over-engineer here. Standard temperature control—around 20–25°C—prevents any physical change while eliminating extra costs. End-users report unpacking dry, free-flowing powder, ready to be measured or blended without special treatment. Documentation always travels with the shipment, not just in digital form, keeping customs and warehousing turnover fast.

    Supporting Research and Development Needs

    The early days saw chemists drive long hours, checking TLC plates on-site and fussing over laborious purification. Today, fully spec’d-out NMR and LC-MS reports, coupled with stability studies, have cut lead times for our R&D-focused clients by weeks or months. When a customer needs a new package size, or a tighter particle size window, our process line can flex on short notice. We like to say our relationship to innovation is practical, not just inspired by market trends—several times, a slight change in crystal habit or solvent system has led to dramatically improved downstream conversions for clients exploring new drug scaffolds.

    Time after time, process chemists and analytical leads have asked for more than just a drum of powder. Many are after personalized insight: What side-reactions might one face trying out a new coupling partner? Could a mixed solvent cut time off recrystallization? Our technical team draws on actual campaigns, not just literature values, to troubleshoot and improve.

    Environmental and Regulatory Considerations

    Attention to regulatory trends shapes much of our operational thinking. Several years ago, changes in hazardous-waste codes made our previous neutralization strategy obsolete. Instead of settling for a minimal update, we rewrote our protocol, investing in closed-loop wastewater capture and proving compliance with real-time monitoring. Responsibility for downstream liability, especially when exporting to strict markets, has driven a no-compromise approach. Our compound meets current purity and impurity limits laid down by governing agencies handling specialty raw materials for pharmaceutical, agricultural, and specialty use.

    We do not view these constraints as simply necessary burdens, but as a crucial part of giving clients reliable supply. Maintaining strong relationships with local authorities and third-party inspectors pays off in predictable, disruption-free logistics. If a new regulation appears on the horizon—say, a shift in standards for organic compounds with halogen content—we adjust our quality plan early, invest in retraining, and communicate with clients instead of waiting for a compliance crisis.

    Comparing with Other Tetrazole Variants

    Besides the 5-(2-Bromophenyl) variant, the market features several related tetrazole compounds. Simple phenyl-tetrazoles often lack the precise directivity delivered by the ortho-bromine; as such, they display different reactivity, especially in palladium-catalyzed or nucleophilic aromatic substitution reactions. In contrast, para-substituted analogues, or those bearing electron-donating groups, usually give rise to side chains or by-products that complicate downstream purification for pharmaceutical-grade applications.

    Clients often find the ortho-bromo group sets our product apart in scope for ring transformations, introduction of specific leaving groups, or clean halogen exchange. Most importantly, it enables transformations at tighter temperature and pH windows—essential when the route includes late-stage functionalizations where every percent yield matters. Because competitive suppliers sometimes reserve their best lots for “named clients,” smaller buyers suffer from out-of-spec batches or slow documentation. We avoid such rationing in order to foster long-term trust across company size and project scope.

    Challenges and Solutions in Real-World Application

    Despite our steady production, user challenges sometimes crop up. The most common requests involve advice on solvent choice or pre-processing to increase solution homogeneity in large-volume reactors. We have built a library of best practices: common solvents compatible with this tetrazole structure include acetonitrile, dimethylformamide, and certain halogenated organics, each selected based on project needs rather than habit or routine. We do not push a “house solvent”; instead, we evaluate customer feedback and real reaction performance.

    Another persistent issue: control of trace moisture. Even trace water from ambient air can lower conversion in sensitive cross-coupling reactions. To counter this, batches are dried under reduced pressure in monitored ovens, and packed under inert conditions if prolonged storage is intended. Our QC lab checks every outgoing lot for volatile residues as well as water content, reducing the risk that a project will falter due to hidden contaminants. Where we spot recurring issues, we adjust process parameters—from the granule size to the speed of filtration—rather than blame end users or raw material vendors.

    Every so often, an end-user working up a new medicinal scaffold reports a trace impurity that sneaks past standard chromatography. We do not ignore these reports; instead, they launch internal reviews and, if needed, fine-tune specific cleaning steps at the root cause. In one memorable case, a minor shift in the speed of pH neutralization led to complete elimination of an elusive impurity. The experience taught our whole staff to stay open to continuous improvement, and to value direct client communication over bureaucracy.

    Ensuring Scalability and Security of Supply

    Not every plant can ramp fast enough to keep up with surging demand or abrupt changes in the global raw material market. We invest in dual-source supply chains and keep forward contracts whenever possible for critical inputs. At the level of process, our lead operators maintain documentation granular enough to scale batches from pilot vessels to multi-kilo reactors, without sacrificing the crystalline integrity or purity profile.

    Risk mitigation takes many forms—from hands-on operator training, to redundant power supplies for critical filtration, drying, and containment infrastructure. Over the years, customer assurance grew less from marketing and more from our record of on-time, in-spec deliveries and honest troubleshooting when setbacks occurred.

    Working with Diverse Customer Needs

    We have long since stopped thinking of our 5-(2-Bromophenyl)-1H-Tetrazole as a “one-size-fits-all” solution. Each end user, whether building new pharmaceutical intermediates or pushing the boundaries of advanced materials, brings unique demands. Some focus on particle size to maximize dispersion; others are driven by the tightest possible impurity limits. Despite these differences, our experience underlines the importance of open technical dialogue and a responsive production backbone over mere catalog sales.

    Future Directions: Listening, Learning, and Leading

    While much about this compound has settled into routine, the field keeps evolving. We monitor academic literature and patent filings to spot new coupling partners, emerging transformations, or alternative application areas. In addition, we keep open lines to clients willing to experiment—those refining flow chemistry or new analytical methods—so we can adapt, scale, and if needed, shift priorities in future campaigns. Sharing knowledge and learning from unexpected challenges keeps our process fresh and gives customers more than what baseline specs provide.