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3,4-Dihydroxybenzylamine Hydrobromide

    • Product Name 3,4-Dihydroxybenzylamine Hydrobromide
    • Alias DHBA
    • Einecs 222-468-7
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry sales7@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    672877

    Product Name 3,4-Dihydroxybenzylamine Hydrobromide
    Cas Number 327-97-9
    Molecular Formula C7H9NO2·HBr
    Molecular Weight 238.07 g/mol
    Appearance White to off-white crystalline powder
    Solubility Soluble in water
    Melting Point 250-255 °C (dec.)
    Storage Temperature 2-8 °C (refrigerated)
    Purity Typically ≥98%
    Synonyms DHBA hydrobromide, 3,4-Dihydroxybenzylamine HBr
    Chemical Structure C6H3(OH)2CH2NH2·HBr
    Ph 1 Solution 4.0-6.0
    Registry Number EC 206-336-1
    Inchi Key STOWVRDXAGYGIE-UHFFFAOYSA-N
    Unii GOI1RZ6LO5

    As an accredited 3,4-Dihydroxybenzylamine Hydrobromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 10g 3,4-Dihydroxybenzylamine Hydrobromide is securely sealed in an amber glass bottle with a tamper-evident cap.
    Shipping 3,4-Dihydroxybenzylamine Hydrobromide is shipped in tightly sealed containers to protect it from light and moisture. The chemical is packaged according to regulatory guidelines for hazardous materials. Typically, it requires dry, cool conditions during transport, and is labeled clearly with all hazard and handling information to ensure safe and compliant delivery.
    Storage **3,4-Dihydroxybenzylamine Hydrobromide** should be stored in a tightly closed container, protected from light and moisture. Keep at 2-8°C (refrigerated) to maintain stability and prevent degradation. Store in a well-ventilated area away from incompatible substances such as oxidizers or strong acids. Proper labeling and secure containment are important to prevent accidental exposure or contamination.
    Application of 3,4-Dihydroxybenzylamine Hydrobromide

    Applications of 3,4-Dihydroxybenzylamine Hydrobromide in Industrial Manufacturing

    3,4-Dihydroxybenzylamine Hydrobromide serves as a specialist intermediate and processing agent in key downstream sectors, delivering functional value in targeted synthetic and biological manufacturing settings. As an original manufacturer, we provide this material to global industrial clients who require consistent quality and regulatory compliance for critical synthesis steps. Below, we outline its actual established use cases with technical detail for application managers, formulators, and process chemists.

    1. Pharmaceutical Dopaminergic Drug Intermediate

    Leading pharmaceutical companies employ 3,4-dihydroxybenzylamine hydrobromide as a late-stage intermediate in the synthesis of catecholamine-based therapeutics, including antihypertensive and antiparkinsonian APIs. Process chemists leverage its high reactivity and purity profile to achieve precise conversion and impurity control in high-volume active substance manufacturing campaigns, supporting both NDA and generic medicine supply.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • USP-NF, Ph. Eur. and JP monograph requirements for downstream APIs
    • FDA 21 CFR parts 210/211 for finished pharmaceuticals
    • Certificate of Suitability (CEP) protocols for European markets

    Typical usage ratio

    • Used in 0.85–1.2 stoichiometric molar equivalents relative to precursor substrates, with precise adjustment according to reaction yield and impurity profile requirements within validated API syntheses.

    Downstream process integration

    • Fed into reductive amination or catechol coupling stages after initial aromatic backbone functionalization, following stringent in-process QC to control for oxidation products and batch variability.

    Final product types

    • Pharmaceutical Actives: Levodopa, Dopamine Hydrochloride, Metyrosine
    • Solid and injectable dosage forms destined for neurology and cardiovascular markets

    2. API Synthesis for Veterinary Medicines

    Veterinary pharmaceutical producers use this material as a core intermediate in the synthesis of catechol-related drugs, leveraging its high quality to satisfy animal health product standards internationally. Careful material traceability and impurity tracking underpin its use in formulation plants serving livestock and companion animal medications, especially where catecholamine derivatives play a direct biological role.

    Industry compliance standards

    • VICH GLs (Veterinary International Conference on Harmonization, especially Q7 and Q9)
    • EU Regulation (EU) 2019/6 for veterinary medicinal products
    • Japanese Veterinary Pharmacopoeia (JVP)
    • ISO 9001:2015 traceability requirements for feed/medicinal supply chains

    Typical usage ratio

    • Dosage level in synthesis range: 1.00–1.15 molar equivalents per precursor, optimized to reduce by-product formation depending on the animal drug’s regulatory specification profile.

    Downstream process integration

    • Fed into protected catechol synthesis blocks, followed by targeted deprotection and amination steps under GMP-compliant conditions with full batch record documentation.

    Final product types

    • Veterinary Active Substances: Dopamine Vet, Noradrenaline Vet APIs
    • Injectable solutions and premixes for livestock and companion animal treatment

    3. Analytical Reagents for Clinical Diagnostics

    Producers of diagnostic reagent kits utilize 3,4-dihydroxybenzylamine hydrobromide as a precursor for calibration standards and as a substrate stabilizer for catecholamine quantification in biological matrices. Its controlled impurity content allows manufacturers to achieve lot-to-lot consistency critical for high-sensitivity testing of urine, plasma, or tissue extracts in clinical laboratories.

    Industry compliance standards

    • ISO 13485:2016 for medical device and reagent kit manufacturing
    • CLSI guidelines (e.g., C62—Liquid Chromatography-Mass Spectrometry Methods)
    • FDA 21 CFR part 820—Quality System Regulation for in vitro diagnostic manufacturers
    • Relevant EU IVDR (In Vitro Diagnostic Regulation) requirements

    Typical usage ratio

    • Utilized in standard curve preparation at concentrations from 0.1 to 5.0 μg/mL, with adjustments per test kit’s sensitivity specifications.

    Downstream process integration

    • Introduced during lyophilization or liquid blending steps in control material and reference standard kit assembly, with batch verification for purity and stability.

    Final product types

    • Diagnostic calibration standards (HPLC and LC-MS kits for catecholamine panel)
    • Clinical reference controls used in hospital and private laboratory settings

    4. Research-Grade Neurochemical Probe Manufacturing

    Manufacturers supplying neuroscience research institutions employ this compound as a high-purity starting material for neurochemical probe synthesis, specifically for in vivo and ex vivo brain imaging agents. Its select catechol structure enables precise functionalization, facilitating probe development for experimental studies on dopaminergic pathways and oxidative stress.

    Industry compliance standards

    • ISO 9001:2015 for research chemical production
    • REACH (Regulation (EC) No 1907/2006) for European supply
    • Applicable US DEA List I/II chemical reporting if probes are classified for controlled substance research
    • Institutional animal research ethics and biosafety regulations (e.g., NIH guidelines for laboratory animal use)

    Typical usage ratio

    • Ratios vary widely by research protocol; typically, 0.95–1.10 equivalents are used during the functionalization step to limit by-product carryover and ensure consistent probe quality.

    Downstream process integration

    • Introduced post-catechol protection, commonly via alkylation or PEGylation, then purified using preparative HPLC and characterized by NMR for probe quality validation.

    Final product types

    • Fluorescent catecholamine probes for neurochemical imaging
    • Radioisotope-labeled ligands for PET/SPECT studies

    5. Fine Chemical Precursor for Catecholic Polymer Additives

    Some advanced materials producers utilize our product as a monomeric precursor in specialty catecholic polymer synthesis, enabling the engineering of functional additives for adhesive and protective coating formulations. Industrial R&D teams value the compound’s controlled substitution pattern and high phenolic reactivity when developing surface modification agents and crosslinkable oligomers for high-performance materials.

    Industry compliance standards

    • ISO 14001:2015 for environmental management in chemical production
    • EU REACH registration for industrial supply and downstream use
    • RoHS 2 Directive (2011/65/EU) for electronics or automotive polymer markets
    • Quality documentation in accordance with customer-specific MSDS and TDS protocols

    Typical usage ratio

    • Typically incorporated at 0.4–1.2% w/w in monomer blends or prepolymer recipes, with precise loading tailored to target adhesion performance and mechanical testing outcomes.

    Downstream process integration

    • Fed into solution polymerization vessels or as a co-monomer in emulsion polymer platforms, followed by post-polymerization crosslinking with controlled cure cycles monitored by FTIR and GPC analysis.

    Final product types

    • Catechol-based tackifiers for adhesive films
    • Polymer-bound antioxidants for flexible coatings and electronic substrates
    Free Quote

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    Certification & Compliance
    More Introduction

    Introducing 3,4-Dihydroxybenzylamine Hydrobromide: Insights from a Manufacturer’s Floor

    Standing at the Bench: What Sets Our 3,4-Dihydroxybenzylamine Hydrobromide Apart

    For more than three decades, our team has specialized in aromatic amines, with a focus on catechol derivatives. Every batch of 3,4-Dihydroxybenzylamine Hydrobromide tells its own story. From the moment raw material shipments arrive at our dock, through precise synthesis and the exacting steps that lead to a flawless salt, we pay attention to every detail. This particular compound emerged from research aiming to provide stable, reliable intermediates for neurochemical and pharmaceutical studies. Our technical approach grew from feedback received directly from research laboratories and formulation teams, shaping each improvement over thousands of reaction runs. Direct hands-on involvement means every lot reflects lessons learned in actual reactor halls, not just theory written on a boardroom whiteboard.

    Technically, we produce the hydrobromide salt of 3,4-dihydroxybenzylamine—sometimes written as DHBA-HBr—a solid, off-white crystalline powder made using proprietary methods. No matter how efficient a process looks on paper, the real test comes during crystallization: clarity, stability, solubility, and purity are all assessed in real time. Years of customer feedback—often repeat orders from the same chemists—highlight why minute variations in preparation matter so much. The final product’s performance in critical syntheses or bioassays depends on our careful control, not just of formal purity, but of process consistency, residual solvents, and trace metals.

    Understanding the Model and Specifications from the Manufacturer’s Perspective

    We do not assign arbitrary “models” to our 3,4-Dihydroxybenzylamine Hydrobromide. Each lot receives a unique batch identifier that records syntheses conditions, critical process metrics, and purity results. What buyers receive is not merely a “specification sheet” but the output of robust process controls designed to meet today’s research and production needs. Routine testing focuses on HPLC assay (typically >99% on dry basis), moisture by Karl Fischer (often under 1%), and residual inorganic salts by ICP-OES, since bromide load and mineral content matter so much for bioassay interference. Instead of chasing theoretical benchmarks, our teams respond to actual laboratory requests: tighter PPh, lower heavy metals, assurance of endotoxin absence. Typical bulk density ranges and melting points are documented—but each figure comes from validated in-house work, not generic supplier statements.

    We have encountered numerous requests for customized granulation, particle size, and tailored solubility—often from scale-up teams with very specific process constraints. Our team responds by tweaking drying and milling, but not at the expense of integrity. Every time a process shift is discussed, we remember plenty of experiments where customers struggled with batch-to-batch drift from traders who lacked direct control over process equipment. Our on-site QA chemists run tests backed by internal reference standards produced from parent catechol sources, all tracked via electronic batch management. We still maintain archival samples of major lots produced over the last ten years for compliance and troubleshooting. Our scientists prefer showing real chromatograms and impurity profiles during technical discussions—a practice not easily mimicked by intermediaries.

    Application Experience: Where 3,4-Dihydroxybenzylamine Hydrobromide Delivers

    This compound serves as a critical intermediate for dopamine-related research and pharmaceutical development. Early uses emerged in academic research on catecholamine neurotransmitters, with bench chemists examining hydroxylation pathways and seeking analogs with improved selectivity. We partnered with neurobiology groups running in vitro biosynthetic studies, providing material matched to strict purity and trace contaminant limits. Eventually, pharmaceutical researchers approached us when scaling up pilot batches for animal studies and small-scale clinical evaluations. The hydrobromide salt’s superior stability outpaced that of the free base, which is highly sensitive to air and degrades quickly in most ambient conditions.

    Compared to the free base, our salt form offers much greater shelf life and handling convenience during formulation. Analytical groups have confirmed that at room temperature and moderate humidity, the hydrobromide resists discoloration and decomposition. This subtle property reduces downtime in assay setups—one less thing for operators to worry about during tight project timelines. A number of leading analytical labs still request small lots by default, preferring our material over third-party alternatives that often lack reliable shelf stability.

    In more recent years, we have supported preclinical researchers using 3,4-Dihydroxybenzylamine Hydrobromide as an internal standard for neurochemical quantitation. Clean mass spectra and consistent response factors matter just as much as nominal purity—slight drift in residual solvent or mineral content can confound quantitation, especially in ultra-sensitive LC-MS work. Through ongoing dialogue with lab heads and principal investigators, we have refined our cleaning and packing methods. In some cases, we supply additional analytical data packs, including GC headspace results and certified amino impurity panels, to meet submission requirements for regulatory documentation and publication-ready work.

    Though chemical manufacturers often focus on tons-per-year production or industrial-scale applications, most requests for this product remain small-volume but technically demanding. Long-standing collaborations with university research centers, hospital diagnostic development cores, and pharmaceutical pilot teams have taught us to prioritize flexibility and responsiveness to changing protocols. Our smallest prepared batch was under 50 grams, customized for a rare disease study; our largest to date filled 10 kg drums for a diagnostic assay maker. Both required the same process safeguards to ensure reproducibility, traceability, and contaminant control. Finding out how each customer uses the product shapes our own quality approach—something stockist resellers rarely understand.

    Drawing Boundaries: How Our 3,4-Dihydroxybenzylamine Hydrobromide Differs from Commodity Offerings

    We have seen growing confusion in the market, with resellers circulating surplus inventory procured from multiple plants—often with little or no transparency on origin or batch history. As a primary manufacturer, our process begins at the reaction flask and continues straight through to finished, lot-coded packaging. Unlike blended re-packs, our product undergoes staged impurity profiling, direct confirmation of anion stoichiometry, and extended stability testing. Our traceability record spans from raw catechol and bromide electrolyte, right up to the sealed vial. Many competitors focus only on superficial purity data, neglecting to communicate batch-to-batch sources or packaging quality. Our customers can request archived material or revisit old impurity results, because our digital records are always mapped to the batch number.

    Customers who have experienced failure with “generic” 3,4-Dihydroxybenzylamine Hydrobromide often cite reproducibility problems—shifting chromatographic patterns, ghost peaks, or unexplained baseline drift. Each time we troubleshoot a failed experiment, the root cause often traces to uncontrolled supplier blending or improper storage. We control the full chain: from vacuum drying after hydrobromide addition, to nitrogen-purged bottling. All documentation is provided directly by our technical team, not passed through yet another intermediary. We have no incentive to misrepresent origin, and nobody is incentivized to cut corners for quick inventory turnover.

    Process water and bromide quality matter just as much as starting catechol. Over the years, we sourced different grades of hydrobromic acid, noting that trace halogen impurities can introduce subtle but significant reaction by-products. Dedicated reactors and batch lines have been reserved specifically to avoid cross-contamination from unrelated amine or aromatic jobs. Our line operators know the difference between a visually clean vessel and a contaminant-free one, a skill honed through training programs shaped by years of “invisible” trace impurity troubleshooting. We regularly audit our own trace metal and halogen profiles with third-party labs, not just relying on in-house certificates.

    Some competitors push out material with higher allowable loss on drying or compromised by unknown color bodies. We maintain internal thresholds that surpass most published standards—such as never allowing more than trace levels of permanganate-reducing substances or accepting any sign of off-odor. Our QA workflow solves problems before shipments leave our floor, not after customer complaints. For users requiring extraordinary levels of microbial purity—such as diagnostic kit manufacturers—we can deliver special batches, run under semi-aseptic conditions, with supporting micro and endotoxin data packs. Each request brings a fresh round of process scrutiny rather than “business as usual.”

    Realities of Synthesis and Scale—Why a Manufacturer’s Perspective Matters

    We have watched development programs founder due to inconsistent input quality or supply interruptions. Labs relying on non-manufacturer sources often face long delays between batch runs, unpredictable supply, or lack of technical backup when something goes wrong. We actively manage forward inventory of precursor chemicals, and keep multi-stage production flexibility to rapidly fill new orders. By maintaining full control—synthetic route, environmental controls, dedicated purification equipment—we shield customer projects from market shocks. This approach demands higher inventory costs and staff training, but has paid off time and again with repeat partnerships and emergency fulfillment during unforeseen supply chain issues.

    Full in-house manufacturing also allows us to cooperate with innovators who need minor modifications—such as alternative particle sizes, unique vialing configurations, or co-packaged reference standards. Customization is achieved quickly, because decision-making happens on the same site as actual production. Many clients have expressed relief upon learning they can actually talk to the scientists and technicians who produced their batch, not just a desk-bound account manager.

    Facility inspection readiness defines how a manufacturer conducts itself. We routinely welcome both customer and regulatory agency audits, always able to open our records, process SOPs, and product archives. No surprises come up, as our compliance and recordkeeping is designed with traceability and customer access in mind. Past audit findings have led to continuous process improvements—be it improved equipment decontamination, new operator training modules, or redesigned packaging to reduce static-induced clumping. Open dialogue with end users shapes every practical and strategic move we make.

    Facts Gleaned from the Lab: Supporting Claims with Direct Evidence

    Real-world testing confirms the value of stringent impurity control. In recent HPLC-MS validation studies, our hydrobromide batches displayed baseline purity devoid of aromatic nitrosamine contamination, a problem dogging several rival suppliers. Internal R&D efforts mapped the oxidative degradation pathways of both the free base and the salt, documenting a clear reduction in catechol quinone formation under standard ambient illumination. Our internal shelf-life studies, conducted at 25°C and 40°C, tracked degradation rates using both visual and quantitative endpoints, never accepting batches showing early tan or brown color formation. These datasets informed not just our own continuous improvement, but our user-facing documentation for technical due diligence.

    Customer case studies illustrate direct benefits. One pharmaceutical preformulation group swapped commercial resourced material for ours midway through scale-up after encountering persistent instability in their reference standards, which jeopardized an entire diagnostic development timeline. Full transition to our in-process-controlled batches restored reproducibility and allowed completion of their animal trial schedule without further delay. Another academic research group published comparative data showing distinct differences in catechol purity and trace bromate contamination when running side-by-side tests of five global suppliers’ material, with ours registering lower impurity signals and greater result consistency.

    Field failures usually teach the hardest lessons. One diagnostic equipment manufacturer incurred project setbacks after equipment calibration revealed hidden interfering peaks in secondary supplier DHBA-HBr batches. After switching to material backed by our process transparency, their LC-EC systems returned baseline stability and inventory write-downs stopped. Through ongoing direct communication, we reviewed and adjusted our post-synthesis storage controls, yielding further improvements in product shelf stability—an example of how two-way technical partnership with end users drives the industry forward.

    Solutions Rooted in Skill, Not Slogans

    Over the years, our process engineers and QA teams have worked side by side to close gaps that most supply chain “solutions” ignore. Rather than relying solely on documentation, we regularly validate in-process controls—monitoring not just final product but every intermediate and piece of critical equipment. We instituted systematic post-process rinsing with low-ionic water for all hydrobromide runs, observing via continuous conductivity checks that this step alone eliminated most repeat trace impurity complaints. Large-scale batch trials demonstrated that slow, controlled cooling during crystallization led to a product less prone to clumping and dissolved quickly when reconstituted by analytical users.

    Raw materials procurement relies on direct supplier qualification. We routinely reject lots of catechol with excessive metallic or aromatic aldehyde “background,” keeping our processes free from unwanted side reactions. Incoming hydrobromic acid is verified through trace halide analysis and neutralization titration performed in-house. Only high-purity materials ever touch our batch reactors, and lot-by-lot process records are immediately available for customer review.

    To stay ahead of the curve, our R&D unit monitors upcoming regulatory trends and pushes for continual improvement. Late last year, when new guidance on nitrosamine limits emerged, our team proactively instituted testing several months before external requirements hit the market. This allows us to deliver product suited to both forward-looking pharmaceutical pipelines and currently active research lines.

    Looking Ahead—Future Plans Built on Daily Reality

    Manufacturing excellence does not come from slogans, but from years of engagement with both the process and the user community. Our quality system is built on direct experience—batch records, root-cause analysis, customer feedback, and regulatory diligence. Every improvement made on our shop floor aims to push the frontier for those who rely on high-quality 3,4-Dihydroxybenzylamine Hydrobromide.

    Moving forward, we plan further investment in process automation, extended stability studies, and rapid changeover capabilities. We remain committed to transparent supply, responsive technical support, and honest conversation with every scientist and production manager who reaches out.

    Our journey as a manufacturer is continually shaped by the people who trust our 3,4-Dihydroxybenzylamine Hydrobromide for their work—be it foundational research or a push toward the next generation of neurochemical discovery. We understand that what leaves our plant becomes part of a larger story, written in every experiment, process optimization, or finished device delivered to a patient or research subject.