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HS Code |
728840 |
| Chemicalname | 3-(3-Bromophenyl)propionic acid |
| Casnumber | 21136-42-5 |
| Molecularformula | C9H9BrO2 |
| Molecularweight | 229.07 |
| Appearance | White to off-white solid |
| Meltingpoint | 88-92°C |
| Boilingpoint | 335.3°C at 760 mmHg |
| Purity | Typically ≥98% |
| Solubility | Slightly soluble in water, soluble in organic solvents |
| Density | 1.512 g/cm³ |
| Smiles | C1=CC(=CC(=C1)Br)CCC(=O)O |
| Inchikey | QOYNVVYERDPOPC-UHFFFAOYSA-N |
| Storagetemperature | 2-8°C |
| Synonyms | 3-(3-Bromophenyl)propanoic acid |
As an accredited 3-(3-Bromophenyl)Propionic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The 25g bottle of 3-(3-Bromophenyl)propionic acid arrives in a sealed, amber glass container with a tamper-evident cap. |
| Shipping | 3-(3-Bromophenyl)propionic acid is shipped in tightly sealed, chemically-resistant containers to prevent leaks and contamination. The package is labeled according to regulatory requirements, indicating the chemical name and hazard information. It is transported under ambient conditions, away from heat, moisture, and incompatible substances, ensuring safe and compliant delivery. |
| Storage | 3-(3-Bromophenyl)propionic acid should be stored in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents. Keep the container tightly closed and protected from direct sunlight and moisture. Store at room temperature and avoid excessive heat. Use appropriate safety measures, including gloves and eye protection, when handling the chemical to prevent exposure. |
Applications of 3-(3-Bromophenyl)Propionic Acid in Industrial ManufacturingAs a direct manufacturer of 3-(3-Bromophenyl)Propionic Acid, we support several established downstream sectors where this compound offers critical value in intermediates and specialized synthesis. Our application knowledge derives from close collaboration with industrial and R&D users for precise process integration, strict regulatory adherence, and optimization of production yields. 1. Pharmaceutical Intermediates – Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)3-(3-Bromophenyl)Propionic Acid serves as a key building block for API manufacturers, particularly in producing nonsteroidal anti-inflammatory drug intermediates. Its bromoaromatic structure streamlines targeted halogenation and side-chain modifications, allowing for highly specific active compound synthesis. Leading pharmachemical companies use it in selective coupling steps, benefiting from its defined reactivity and purity profile, with full regulatory traceability for finished drug molecules. Industry compliance standards
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2. Agrochemical Synthesis – Herbicide and Pesticide IntermediatesThis compound enters agrochemical synthesis lines as an aromatic precursor for developing new classes of selective herbicides and insecticides. It’s leveraged for the creation of proprietary bromoaromatic moieties, which confer both biological selectivity and metabolic stability in plant protection products. Agrochemical process engineers specify defined purity and lot-to-lot reproducibility for pilot and commercial scale runs. Industry compliance standards
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3. Liquid Crystal Organic Synthesis – Display Industry3-(3-Bromophenyl)Propionic Acid is included in advanced liquid crystal compound synthesis for use in display panel manufacturing. Specialty chemical groups exploit its para-substituted bromo position to generate high-purity intermediates for nematic and smectic liquid crystal mixtures, facilitating desirable dielectric anisotropy and viscosity properties needed for LCD and OLED technologies. Industry compliance standards
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4. Specialty Polymers – Engineering and Performance PlasticsPolymer manufacturers incorporate this compound to introduce controlled aromatic bromine into polymer backbones or side chains, imparting flame-retardant properties and molecular tunability. The controlled reactivity supports synthesis of polyesters, polyamides, and copolymers for automotive, electronics, and building industries. Consistent lot-to-lot quality is critical for reproducible polymer modification, especially when used in high-value engineering plastics or specialty films. Industry compliance standards
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At our plant, the job doesn’t end at mixing reagents and meeting numbers on quality sheets. Products like 3-(3-Bromophenyl)propionic acid aren’t just codes or inventory – they’re the output of genuine hands-on development and daily real-world problem solving in our reactors. This compound, which many know from the model label CAS 1459-94-3, shows up in a niche spot, yet fills a genuine and recurring need for both research and synthesis industries. The production of this acid calls for careful control of every reaction step, and it’s the details in this process that shape both product reliability and how easily customers can work with our batches.
The chemical structure – a bromine atom locked on the meta position of a phenyl ring, joined to a propionic acid side chain – lays a solid groundwork for both direct use and for building up more complex molecules downstream. In practice, the meta-bromo functional group stands out for the distinct reactivity it lends, setting it apart from its ortho- or para-bromo cousins. Synthesis teams turn to this compound when they want to introduce a handle for further reactions: especially Suzuki and Heck couplings, Grignard reactions, and even more niche custom tetracyclic architectures. The propionic acid moiety doesn’t just change the solubility profile, it gives formulators a direct way to link into esters, amides, and a host of specialty derivatives.
Scaling up 3-(3-Bromophenyl)propionic acid can turn into a tricky game, especially if the bromination phase isn’t dialed in tightly. Impurities easily sneak in, and carry-over from partial halogenation or side-chain isomerization shows up in end-user tests. We avoid those headaches because our in-house process has evolved past textbook reactions. Many years on the production line have confirmed that getting the right bromine activity means more than matching temperatures – it involves agitation rates, solvent quality, and continuous sampling.
Feedback from one of our polymer clients provided the final nudge: we needed our acid to have both tight melting point range and a low enough residual halide content for their catalytic systems. After several rounds of tweaks, we fixed a protocol that minimizes unwanted byproducts and gives a white, free-flowing crystalline powder with a melting point reproducible within a single degree every batch. Customers say this takes some guesswork out of their purification and formulation steps.
What makes this brominated propionic acid stand apart isn’t all found in theoretical property charts. We see repeat buyers who rely on our material as a robust building block for new life science intermediates and bench-scale active pharmaceutical ingredients. In the performance materials sector, our acid supports work in liquid crystal work and tailored specialty polymers—places where trace impurity levels can make or break a process and product consistency keeps lines running.
In our own development lab, we routinely take a sample from the same tonne-size lots that go out in shipping totes. Our team requests these samples for actual synthetic tests—forms of Suzuki cross-coupling, direct acylation, even simple hydrolysis. This hands-on approach helps us catch strange lots early and gives us the facts to back up claims, not just hope on paper. Once, a custom synthesizer team flagged some ‘oily streaks’ showing up during their coupling experiments, but after tracking the issue we found the root in their solvent line—our batch stayed consistent during the troubleshooting with independent confirmation from their technical team.
In daily use, some buyers compare meta–bromo to para- or ortho–bromo derivatives for flexibility. Truth is, the meta–bromo handles downstream routes for unique substitution patterns that simply don’t work with the other isomers. Para derivatives might open up handles for simple substitution, but the selectivity in meta often leads to clear yield benefits when pushing beyond basic steps. Those running aromatic couplings with palladium or nickel catalysts see this every day: the meta isomer gives less steric congestion, which plays out in overall reaction efficiency.
On the physical side, our batches come in a manageable crystalline powder suitable for bulk handling and straightforward weighing, as contrasted with some sticky or poorly crystallized alternatives. Clean filtration and rapid drying are achievable at modest scales, so customers don’t need to reprocess unless their formulation calls for specialty techniques. From our own records, shelf life remains predictable under standard storage, and container caking or fluidity drops only occurred after long hot shipment seasons far outside of our standard warehousing.
We engineer every lot to stay within a melting point of 120–124°C and an assay level minimum of 98%, both proven by HPLC and NMR confirmation. We don’t dress up these numbers; only practical measurements, routinely observed in both our in-process labs and third-party confirmations. We never push batches out that skirt the minimums, because if our chemists wouldn’t use it with confidence, we don’t expect others to. Solubility checks in key solvents like methanol, acetonitrile and even basic aqueous media allow customers to shift between preparative and analytical workflows. Trace residual bromide levels consistently drop below 0.05%, well within range for both classic bench chemistry and scaling up in pilot plants.
Packing choices remain geared for hands-on use. We fill and seal our acid in multi-layer polyethylene drums or custom barrier pouches, all confirmed to protect against moisture uptake and light-induced changes. The packaging isn’t just a formality – one lost shipment early in our business taught us that proper drum lining prevents caking that otherwise causes real production delays on the client’s end.
Most buyers approach us ready to use 3-(3-Bromophenyl)propionic acid in downstream syntheses, especially for generating intermediates like hydroxy or alkyl-substituted phenylpropionates, advanced pharmaceutical candidates, or specialty ligands for metal complex work. Many reference published coupling routes—our technical staff regularly supports protocols calling for palladium-catalyzed coupling, selective hydrogenation, or functional group exchange.
For new users, we recommend running a quick solubility screening in the solvent of their choice and drying the solid in vacuum if high-purity esterification, amidation, or salt-forming steps are planned. This cuts out traces of water that could otherwise block catalysts or promote unwanted side reactions. Our in-house test protocols, meant for scale-up guidance, often help avoid wasted reagents or low yields, and we are open about these tips when asked for technical support.
No plant process runs without hiccups, especially with aromatic bromination. Over the years, we’ve found three recurring trouble spots that matter for end users: inconsistent melting range, trace colored impurities, and container caking during humid shipping. While these seem unrelated to direct chemistry, they play a real role in how batches handle and behave at the receiving site.
We addressed melting range issues by tightening bromine dosing rates and using spectral analysis of in-process intermediates. Colored impurities, once a persistent issue, finally were solved by employing an additional recrystallization from an optimized solvent blend that had to be trialed over several months. Caking during transit was trickier—our solution is now double-sealing all containers with both inner liners and outer drums, which keeps the material free-flowing even after long sea journeys.
Customers looking to substitute 3-(3-Bromophenyl)propionic acid with structurally similar products sometimes report process drift or unexpected byproducts. This connects directly to the compound's unique electronic profile, which shifts reactivity away from ortho and para isomers. Buyers scaling from hundreds of grams to kilos find process transfer simple with our acid, as lot-to-lot consistency stays high both on purity and melt-point.
We support contract manufacturers focused on new generic APIs, academic groups exploring modified aromatic acids, and fine chemical companies needing reliable intermediates. The acid’s compatibility with both classical coupling and modern cross-coupling methods has been confirmed both internally and by clients. In one recent specialty materials project, the product provided a controllable path toward high-purity phenylpropionic monomers for resin modifications, after extensive testing for trace heavy metals and halogen scavenging capacity.
Researchers synthetizing rare analogs often run up against supply chain hurdles – so we commit to both sustained production and direct solution of logistics and documentation bottlenecks. Every container ships with a product-specific CoA and spectral data set, with extra reference spectra available for regulatory or analytical validation. Our packaging team works closely with the customer service department to manage special labeling or delivery requests, especially for those working in GMP-compliant or export-controlled environments.
Company priorities hinge on practical reliability rather than the abstract. Our chemists sit just steps from the reactors—so the experience of troubleshooting, improving, and delivering 3-(3-Bromophenyl)propionic acid travels straight from the development bench to the loading dock. We know our product lines inside out, and that knowledge means we quickly resolve supply or technical questions rather than routing through distant sales office networks.
Commitment to direct production also brings us into the custom route and toll-manufacturing sector. Our technical staff frequently offers on-the-floor perspectives about raw material shifts or necessary process tweaks to accommodate evolving customer requirements or regulatory frameworks. Having a manufacturing mindset means staying responsive—delays or issues get handled right where and when they occur, and this shows up in delivery reliability and repeat orders.
Some ask about using their existing stocks of 2- or 4-bromophenylpropionic acid for reactions written up under the meta version. This usually brings headaches. The stereo-electronic features of the meta compound allow for selective reactions or catalysis that stumbles when using ortho or para versions. Repeated customer experience shows the meta acid delivers better yield or selectivity across Suzuki and Buchwald-Hartwig protocols that underpin active pharma and agrochemical syntheses.
Another area involves post-coupling functionalization or the generation of ring-substituted analogs. Subtle shifts in electronic impact from the bromine position change reaction routes, especially for those relying on template-driven cyclizations or assembling specific biological targets. The meta acid keeps the synthetic window open for more complex structures without introducing unexpected blocking or ortho/para reactivity problems.
Physical properties matter too—for many buyers, the ability to dry, weigh, and dissolve without drift from caking or unwanted polymorphic transitions keeps downstream steps efficient and predictable. This is not just a lab curiosity: time spent grinding or re-purifying low-quality intermediates translates into real cost and deadline issues in active manufacturing environments.
We treat each shipment as more than an order number. The people producing and packaging this acid look for new issues and improvements every batch. Regular communication with users brings up requests for novel packaging or options for larger and smaller containers, and we implement meaningful changes without red tape. Many requests now center on scaling from pilot to commercial volumes, where intellectual property or cost management drive decisions. Our plant invests in flexible production capacity to answer these shifts in demand, having seen repeated swings in global pharmaceutical and fine chemical cycles.
Raw material shifts and supply disruptions, especially in halogenated intermediates, have occurred regularly. Experience proves that having extended relationships with bromine suppliers, and keeping emergency inventory, reduces risk for customers relying on downstream fulfillment. Long-term process tweaks evolve as new analytical tools arrive; for instance, recent installation of higher resolution spectrometers now lets us trace impurities down to part-per-million levels, which users pursuing drug substances appreciate.
Most improvements in process and quality control originated from user experience rather than theoretical optimization. Our engineering team responds daily to feedback on filtration or harvest times, residue problems, or specific packaging leaks. We do not see this as a burden but as the main reason our acid holds up across industries. Critically, sharing best practices across research and manufacturing clients lets us identify problems early and adapt quickly, keeping our product both competitive and sustainable.
Every batch shipped carries the history of these collective changes. From process tweaks to reduce byproducts, to packaging upgrades that eliminate caking or moisture pickup, our acid line reflects more than written specifications, it stands for continuous, plant-driven improvement.
Shifts in green chemistry and more complex target molecules keep challenging both our process and how customers use 3-(3-Bromophenyl)propionic acid. Our response has trended toward cleaner process cycles, tighter raw material controls, and added transparency in documentation for those needing regulatory or purity assurances. Focusing production close to our core team means maintaining oversight from raw intake to packed drum, allowing faster response to specific or custom synthesis needs.
In the real world, this chemical’s consistency and reliable reactivity support a long track record of successful downstream syntheses and keep costs in line for customers committed to scale-up. As new projects and regulatory requirements emerge, our production and technical staff remain visible and present, lowering barriers for custom formulations, documentation, or direct cooperative workflow development.
Drawing on honest production experience and direct customer feedback, we see 3-(3-Bromophenyl)propionic acid as more than a commodity. This compound, with a meta-bromo group on a propionic acid backbone, offers distinct advantages for both research and process synthesis—yielding predictable, clean results where other isomers or generic substitutes often fall short.
Years of internal development, hands-on troubleshooting, and open collaboration with global users have shaped our product line. The acid delivers consistent melting, reliable solubility, and clean spectral characteristics batch to batch. Open lines with chemists, process engineers, and formulators have led to practical packaging, easy handling, and a feedback-driven development path that extends well past what’s written in textbooks or on certificates of analysis.
Chemical manufacturing always presents new headaches and opportunities for improvement, and the ongoing partnership between our team and the worldwide community of synthetic chemists, formulators, and process operators keeps our 3-(3-Bromophenyl)propionic acid offering not just competitive, but trusted, batch after batch.