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3-Bromophenylethanol

    • Product Name 3-Bromophenylethanol
    • Alias 3-(2-Bromo-phenyl)-ethanol
    • Einecs 242-122-1
    • 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

    928176

    Chemical Name 3-Bromophenylethanol
    Cas Number 5172-47-4
    Molecular Formula C8H9BrO
    Molecular Weight 201.06 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling Point 262-264 °C
    Density 1.478 g/cm³
    Flash Point 128 °C
    Refractive Index 1.578
    Solubility In Water Slightly soluble
    Purity Typically ≥98%
    Iupac Name 2-(3-bromophenyl)ethanol
    Smiles C1=CC(=CC=C1CCO)Br
    Storage Temperature 2-8 °C

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

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    Application of 3-Bromophenylethanol

    Applications of 3-Bromophenylethanol in Industrial Manufacturing

    3-Bromophenylethanol provides value as an intermediate in the synthesis of specialized chemicals. As a direct manufacturer, we support industrial partners by supplying material tailored for high-purity processes. Below, we detail key downstream applications, specifying compliance standards, actual usage ratios, points of integration, and the precise finished products our clients target.

    1. Active Pharmaceutical Ingredient (API) Synthesis

    Pharmaceutical manufacturers select 3-bromophenylethanol as a building block during the synthesis of specific active pharmaceutical ingredients, particularly in the development of substituted benzyl alcohol derivatives or scaffolds required in central nervous system drugs. The compound introduces critical halogenated phenyl structures, influencing pharmacokinetics and bioactivity. Our partners use this intermediate at precise concentrations during multi-step organic synthesis, maintaining full traceability and adhering to GMP documentation throughout. The controlled introduction ensures process reproducibility, impurity profile predictability, and downstream compliance through final product release.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP General Chapter <1078> Good Manufacturing Practices for Bulk Pharmaceutical Excipients
    • 21 CFR parts 210/211 (US cGMP)
    • EU GMP Annex 8 (Excipients)

    Typical usage ratio

    • 0.5–5 mol% relative to the core substrate; ratio adjusts based on targeted API molecular structure and impurity tolerances. Process R&D phase may screen 0.1–2 equivalents per batch.

    Downstream process integration

    • Reactant in nucleophilic substitution or reductive amination steps; incorporated before final cyclization, reduction, or protection-deprotection protocols.
    • QC analysis monitors its disappearance from the reaction stream, with analytical HPLC and GC used for in-process and residual assessment.

    Final product types

    • Analgesic and anti-anxiety small-molecule APIs (e.g., halogenated phenethylamines)
    • Antihistamines containing bromophenyl motifs
    • Research and diagnostic active compounds with arylethanol side chains

    2. Industrial Fragrance and Fine Aromatics Manufacturing

    Formulators in the fragrance sector leverage this raw material to introduce subtle halogenated notes in perfumery bases and as a precursor for aroma chemicals. 3-Bromophenylethanol is specifically favored in synthesizing high-performance phenylethyl-based aroma compounds requiring precise substitution patterns for odor threshold and stability. Suitability for IFRA-compliant fragrances depends on purity, documented trace elements (such as heavy metals), and full REACH registration. The integration occurs during batch or semi-batch synthesis of multi-functional aroma molecules, directly impacting yield and endpoint olfactory profile.

    Industry compliance standards

    • IFRA (International Fragrance Association) Standards and Guidelines
    • REACH Regulation (EC) No 1907/2006
    • ISO 9235 (Aromatic Natural Raw Materials)

    Typical usage ratio

    • 0.1–2.0% w/w in total reaction mass for esterification or etherification; aromatic intermediates may require up to 5% depending on product complexity.

    Downstream process integration

    • Charged as a core intermediate following initial condensation reactions in aroma chemical synthesis lines; often used prior to methylation or glycosylation steps for enhanced scent persistence.
    • GC-MS and FTIR applied during batch monitoring to confirm conversion and by-product removal.

    Final product types

    • Fine fragrance fixatives
    • Bromophenyl-based floral notes in perfumery
    • Aromatic building blocks for soap and detergent scent compounds

    3. Agrochemical Intermediates Synthesis

    Specialty agrochemical producers employ 3-bromophenylethanol in the custom synthesis of pesticide and herbicide intermediates, specifically those that require a halogenated ethanol moiety. It appears in multi-step synthetic procedures for selective crop protection actives, influencing solubility and action spectrum. Strict adherence to registrant specification and impurity controls is mandatory for field-application ingredients. Downstream integration occurs predominantly in alkylation, etherification, or acylation sequences, requiring precision dosing and closed-system handling to ensure product consistency and environmental stewardship.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • ISO 9001 certified QC systems for agrochemical synthesis
    • National pesticide regulatory authorities (EPA, EU SANCO, China ICAMA as applicable)

    Typical usage ratio

    • 3–15 mol% as a coupling component; actual percentage influenced by the target molecule design, downstream functionality, and regulatory residue limits.

    Downstream process integration

    • Direct feedstock for halogen introduction prior to esterification or amidation reactions; monitored via LC-MS for intermediates isolation and qualification.
    • Tank to reactor transfer performed under nitrogen to avoid oxidative impurities.

    Final product types

    • Brominated herbicide precursors
    • Selective insecticide intermediates
    • Custom pheromone synthesis for agricultural dispersal agents

    4. Advanced Materials: Polymer Modifier Synthesis

    Producers in advanced materials apply 3-bromophenylethanol in creating specialty polymer modifiers and crosslinkers, particularly for functionalizing engineering plastics or specialty resins. Introduction at the functional monomer stage allows for post-polymerization modification, enabling tailored mechanical strength and thermal stability in demanding applications like automotive and electronics. Regulatory focus covers both product and workplace safety, including monomer residue and controlled emission during processing. Downstream, this raw material typically enters pre-polymerization feed tanks, with real-time viscosity and conversion monitored before bulk polymerization proceeds.

    Industry compliance standards

    • ISO 9001 Quality Management Systems
    • ISO 14001 Environmental Management in chemical manufacturing
    • RoHS Directive 2011/65/EU (for electronics-related polymers)
    • UL 94 Flammability Standard (if for electrical insulation polymers)

    Typical usage ratio

    • 0.2–1.5 wt% of total monomer feed for modifier synthesis; adjusted for final polymer properties and application end-use standards.

    Downstream process integration

    • Intermediate addition to monomer streams before initiation; monitored by in-line GPC or NMR for copolymer composition targeting.
    • QC approval based on conversion rate, absence of unreacted halide, and characterization by DSC or TGA.

    Final product types

    • Halogenated polymer modifiers for engineering plastics
    • Functional resin precursors for automotive coatings
    • Electronic encapsulant resins with flame retardant properties
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    Certification & Compliance
    More Introduction

    Bringing Better Results to Your Chemistry: A Close Look at 3-Bromophenylethanol

    Seeing Beyond a Label: What 3-Bromophenylethanol Means in Practice

    Working in a laboratory or on the manufacturing floor, anyone who has dealt with specialty chemicals understands how often a small tweak in a molecule turns into a big change in how things behave. I have spent years around bench tops where reliable intermediates make all the difference for both researchers and industrial teams. 3-Bromophenylethanol sits in a unique spot because of the range of transformations it supports and the consistent quality it can offer, especially for teams focused on building more complex molecules. It never struck me as a luxury to ask about the place your starting materials come from—I've learned that what goes into the flask shapes every stage after.

    Identity and Structure That Matters

    3-Bromophenylethanol, often referenced as 2-(3-Bromophenyl)ethanol by chemists, catches the eye for its simple structure with a twist. It holds a two-carbon side chain with a hydroxyl group attached to a 3-bromophenyl ring, giving the molecule both polarity and a handle for further chemical modification. As much as we celebrate creativity in synthesis, tight control over reactivity and functional group placement still rules nearly every decision at the bench. The bromine atom in the meta position—attached to the aromatic ring’s third carbon—opens doors for constructing pharmaceuticals, advanced organic materials, and agrochemical intermediates.

    Comparing my experience experimenting with both para- and ortho- brominated phenylethanol compounds, it quickly becomes clear that the position of bromine changes the kind of chemistry you can do next. The meta product brings selective cross-coupling options and predictable handling. Clear documentation and a history of stable analytical profiles for batches ensure this product keeps running on reliable, reproducible tradition.

    Specifications That Build Confidence

    Working with 3-Bromophenylethanol, you recognize straight away how purity and traceability bear on an experiment’s fate. Every bottle worth its salt includes a clear statement of purity—modern sources consistently land at 98% or higher by GC, with impurity levels strictly controlled. In my experience, this matters less for appearance and more for how it allows for efficient downstream chemistry. 3-Bromophenylethanol’s character as an oily to semi-solid material means you’re rarely surprised in daily work; it blends well with common organic solvents like ethanol, dichloromethane, or acetonitrile, making weighing and mixing feel almost routine. Melting and boiling point ranges hover dependably, tracking between 70-80°C for melting and 145-155°C for boiling, which brings dependability to temperature-sensitive processes compared to some other halogenated intermediates.

    Handling fragrance-grade or pharma-grade precursors brings extra attention to trace impurities. From what I’ve seen, 3-Bromophenylethanol gives an edge over some isomeric forms because the bromine sits further from the alcohol. That separation reduces the risk of troublesome side reactions, especially in reduction or coupling chemistry, leaving fewer headaches about off-notes or by-product contamination—something that can’t always be said for the 2-bromo or 4-bromo analogs.

    Documentation kicks in here, not just papers in the bottle but up-to-date certificates, chromatograms, and NMR traces that prove no corners were cut in production. Anyone who’s had to run re-tests on a misbehaving batch, or chase a contaminant back to a supplier, knows how much time clear records can save you. The top brands make transparency a regular feature—batch histories, storage info, chain of custody—far beyond what you’d expect at first glance.

    What Sets 3-Bromophenylethanol Apart in Day-to-Day Chemistry

    Talking to colleagues in pharmaceutical R&D, I’ve seen 3-Bromophenylethanol preferred not out of habit, but because it builds confidence across project stages. Its role as an intermediate in the synthesis of beta-blockers, fungicides, or veterinary drugs doesn’t push it into the limelight. Still, those who use it know the difference a reliable supply can make. The meta-bromo substitution tailors the molecule for Suzuki-Miyaura and Heck coupling reactions, where unanticipated side products from ortho-objects can derail the whole route.

    Beyond pharma, it supports the creation of specialty polymers and performance materials. Its ability to act as a starting point for modified aromatic resins or to support custom small-molecule libraries means fewer delays sourcing different starting points. By not introducing the reactivity quirks of ortho- or para-positioned bromines, results tend to become more predictable, batch after batch.

    Some suppliers highlight micron-scale uniformity or “granular architecture.” From my own work, that sells short what matters. Instead, knowing how the substance handles moisture, shelf stability, and re-sealing under normal lab conditions helps researchers plan for both short and long sprints. The best material keeps its profile over months, resisting oxidation or hydrolysis under careful storage in amber glass at low humidity.

    Environmental and Safety Considerations in a Modern Lab

    My time running and supporting green chemistry initiatives confirmed something simple: choice of intermediate has ripple effects far beyond the first reaction. 3-Bromophenylethanol offers several positives in terms of safety and waste minimization. Unlike many polyhalogenated aromatics or volatile halides, it steers clear of acute toxicity and persistent environmental buildup, though careful waste handling remains standard.

    Its ease of handling under routine fume-hood conditions saves labs from rolling out special gear or backup containment plans. Compared to more toxic bromo-acetophenones or heavier halogenated solvents, risk of acute inhalational or dermal toxicity stays lower. I once compared workup times between this compound and several alternatives, and the difference in required washing and ventilating stages was striking, letting teams get product safely into storage without lengthy post-process.

    Problems and Practical Solutions for Real-World Workflows

    Not all challenges around brominated intermediates get solved in textbooks. Over the years, many labs burn hours fixing solubility, crystallization, or trace by-product issues. Even predictable contaminants like trace dibrominated analogs or unreacted bromobenzene can trip up a project. For 3-Bromophenylethanol, sources that stand behind regular analytical testing dodge many headaches by flagging and correcting for off-spec material before it arrives in your lab.

    For labs working on tight margins, the cost Per mole often becomes secondary to the value of avoided rework. Less time spent filtering out colored by-products or recalculating reaction yields means more headspace to focus on developing active compounds and fine-tuning protocols. From personal use, maintaining a small, safety-stock batch of 3-Bromophenylethanol makes last-minute synthesis changes easier, unclogging bottlenecks that sometimes appear late in a campaign.

    Waste management in mid- to large-scale research also improves with fewer halogen-heavy by-products. By focusing on single-bromo intermediates and sticking with tightly sourced material, the knock-on effect is less regulatory scrutiny and, often, lower downstream disposal fees—never a glamorous discussion point, but critical in regulated and cost-conscious industries.

    Regulatory Context and Market Dynamics

    A quiet but important factor stems from traceability when dealing with regulated sectors. Even on simple routes, pharmaceutical and agri-tech projects increasingly call for documentation every step, from chemical origin to fate in the waste stream. 3-Bromophenylethanol’s consistent make and tested identity have set it apart in audit trails, smoothing approval processes as regulations become stricter around both purity and source verification.

    Fellow project managers and regulatory compliance leads have told me the relief they feel knowing their chosen intermediates match up with batch-level paperwork and trace impurity histories. Over the years, as supply chains got more complex, 3-Bromophenylethanol’s checkable lineage made cross-border shipping of final products smoother. This does more than prevent hold-ups—it helps retain earned trust with end-users.

    Looking at recent industry data, sourcing patterns for brominated intermediates show demand cycling upward in both pharma and fine chemical sectors. Labs that faced long lead times or surging costs in the last few years leaned harder toward reliable, mid-complexity starting points. Access to a robust pool of 3-Bromophenylethanol suppliers, with overlapping standards for purity and shipping safety, brings more room for negotiation without pressure to compromise on batch uniformity or regulatory history.

    Insights Gained from Long-Term Use

    Working with the same starting materials across different projects builds up a bank of trust—or reveals gaps quickly. My hands-on work with 3-Bromophenylethanol, both in academic projects and in pilot-scale industry syntheses, taught me two main points. First, sticking with a well-characterized intermediate matters more than minor savings on raw material costs; avoiding downtime and repeat analysis always pays off. Second, sharing learnings and batch histories with other teams, even if you’re not required, stops small problems from growing large.

    These days, regular updates from suppliers on any process tweaks, or alerts about upstream raw material shifts, help avoid being caught off guard. Several times, batch-to-batch inconsistencies from lesser-known sources caused headaches—especially in complex multi-step syntheses aimed at medicinal chemistry or custom materials. The best experiences came from sticking with long-term, transparent suppliers who delivered a product closely matching previously validated lots.

    Comparing 3-Bromophenylethanol to Related Compounds

    Working with phenylethanol derivatives throws off new questions with every compound swap. While some researchers opt for 2-bromo- or 4-bromo- isomers, these often present their own quirks. The 2-bromo form, with bromine closer to the alcohol group, can spark steric complications or prompt alternative reactivity—sometimes a benefit, but often a risk in multi-step syntheses. The 4-bromo analog supplies different selectivity options for cross-coupling, but I’ve observed more frequent impurity spikes in real-world batches, requiring added workup steps.

    3-Bromophenylethanol emerges as a kind of “just right” middle ground: bromine poised far enough from the alcohol to reduce side problems, but still close enough to drive functionalization where needed. Its reactivity sits in the sweet spot for predictable transformations, especially on alkylation, oxidation, or palladium-catalyzed reactions. In performance, the consistency matters more than any single spec line. Repeated comparative trials in the lab found that 3-Bromophenylethanol reacted more cleanly than several substitutes, resulting in higher overall yields and easier purification runs.

    Cost matters to every buyer, and while some para- or ortho- equivalents show up cheaper by weight, the real price reveals itself in wasted bench hours, re-analysis, or extended cleanup. Extra time means lost opportunity elsewhere—a lesson I learned one tough quarter managing overlapping programs in a pressured pipeline.

    Paving Better Paths for Research and Application

    Getting the best value from 3-Bromophenylethanol means treating it as a partner in the broader synthesis workflow, not just a commodity. I’ve learned to integrate regular supplier feedback, batch-quality comparisons, and practical in-lab trialing into the acquisition process, keeping both short- and long-term costs away from avoidable surprises. Open communication channels with suppliers—asking about planned batch changes, storage advice, or shipping improvements—often turns up small tweaks that save time and resources down the line.

    Professional communities also benefit from sharing real-world pain points with manufacturers. Flagging batch issues, unusual impurity profiles, or handling drawbacks leads to more robust production runs and fewer problems for downstream researchers. Collaborating between purchasing, regulatory, and R&D helps keep trust high and administrative headaches low, securing the supply pipeline for critical intermediates.

    For expanding labs or startups, partnering with suppliers who can guarantee consistent analytical support changes the game: methods like routine NMR, mass spec, and IR analyses, included with every lot, prevent mystery contaminants or off-spec batches from reaching critical work stages. In my own group, we devised quick check procedures for incoming stock, charting supplier data against in-house outcomes—a proactive move that reduced wasted runs and flagged unknown issues earlier.

    A Look to the Future: Resilience, Reliability, and Innovation

    Even as technology accelerates and regulatory landscapes shift, the demand for simple, robust, and highly flexible intermediates grows. My time following the transition from old-school sourcing to digitally tracked, rigorously documented products highlighted a truth: upstream choices still shape project success downstream. 3-Bromophenylethanol stands as an example of reliability in action. From the bench scientist who needs predictable chemistry, to the operations lead navigating scale-up, to the regulatory specialist checking off documentation, every stage sees benefits from a material that “just works” without surprises.

    With sustainability and process efficiency topping modern R&D priorities, the less-visible impact of trust in intermediates shouldn’t get overlooked. The more I reflect on years spent fine-tuning syntheses, the more clear it becomes that material quality, traceability, and a proactive relationship with suppliers drive both competitive edge and day-to-day peace of mind.

    Bringing in 3-Bromophenylethanol isn’t about chasing the latest trend. It’s about returning to the fundamentals—deliver quality, support trust, demand clarity, and share what you learn. These pillars keep labs moving, projects finishing, and teams collaborating long past today’s experiment. Anyone who’s taken pride in a well-run synthesis or a successful product launch knows the value embedded in every bottle—a point that matters more now, as both science and business move forward faster every year.