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HS Code |
402867 |
| Product Name | 3-Bromo-5-Cyanobenzoic Acid |
| Molecular Formula | C8H4BrNO2 |
| Molar Mass | 226.03 g/mol |
| Cas Number | 142137-99-5 |
| Appearance | White to off-white solid |
| Melting Point | 210-214°C |
| Solubility | Slightly soluble in water; soluble in organic solvents such as DMSO and DMF |
| Purity | Typically >98% |
| Smiles | C1=CC(=C(C=C1C(=O)O)Br)C#N |
| Inchi | InChI=1S/C8H4BrNO2/c9-6-1-5(8(11)12)3-7(2-6)4-10/h1-3H,(H,11,12) |
| Storage Conditions | Store at 2-8°C, protected from light and moisture |
As an accredited 3-Bromo-5-Cyanobenzoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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| Storage |
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3-Bromo-5-Cyanobenzoic Acid has earned a reputation among experienced chemists who rely on tried-and-true reagents to dig into complex synthesis work. Each bottle holds a white crystalline powder with a purity often above 98%, and you can feel it as soon as you start weighing out a batch—the substance delivers results without too much drama. Whether you're developing pharmaceutical intermediates or diving into more academic exploration, this compound pulls its weight across the board.
Its molecular formula (C8H4BrNO2) sets the stage for high reactivity at specific positions on the benzene ring. That 3-bromo and 5-cyano substitution pattern pushes the chemistry in some useful directions. Working in a lab for years, I've noticed that adding 3-Bromo-5-Cyanobenzoic Acid to a synthesis chain often helps speed up downstream reactions, and that kind of reliability brings relief on a tight timeline.
Many products hit the market with big claims, but genuine performance lies in consistency batch after batch. A typical sample, labeled by most commercial vendors as "analytical grade," stands out from more industrial versions of benzoic acids due to its low moisture content and careful control over trace impurities. Although the melting point usually registers around 245-248°C, what I care about most as a practitioner is the lack of “surprise” contaminants — those can derail both yields and reproducibility.
If you run HPLC or NMR to check your stock, you’ll pick up a strong single peak, clean splits, and almost no background noise. These details matter. Stringent manufacturers ship it in opaque glass vials or lined drums to prevent photodegradation and moisture absorption, and each label reads with clarity — few things undermine confidence faster than deciphering vague batch numbers or ambiguous expiry dates.
Organic chemists, especially in early drug discovery, prize this acid for its ability to act as a pivotal intermediate. The bromo group offers a reliable handle for further functionalization through classic Suzuki or Buchwald-Hartwig coupling, while the cyano group stands tough through harsh conditions. I’ve found that the cyano substitution, thanks to its electron-withdrawing effect, can direct other substitutions with surprising precision, opening new possibilities in aromatic chemistry.
These properties often mean the difference between months of labor and actual breakthroughs. Take one example: in synthesizing kinase inhibitors, replacing the 3-position hydrogen with bromine and planting a cyano on the 5-position streamlines later cross-coupling steps, turning what started in a flask into potential preclinical candidates. Seeing that payoff up close, it becomes clear that not every benzoic acid derivative manages to match the efficiency here.
I’ve stood next to engineers scaling up pilot batches and watched as formulas using 3-Bromo-5-Cyanobenzoic Acid sidestepped bottlenecks that plague less pure acids. It shines in multi-step synthesis: you can build a scaffold, hang side chains, and still return to the core aromatic ring for more manipulation. That’s rare. Researchers also use it as a starting point in synthesizing dyes, advanced agrochemical ingredients, or specialized polymers, where both stability and reactivity play out on milligram and kilogram scales.
Some labs working in fluorescent probe design value this molecule for photophysical tweaks. The acid can form robust bonds with chiral auxiliaries—often a tricky challenge—and integrates seamlessly into peptide or oligonucleotide conjugates when bioconjugate chemists seek durable, predictable linkers. I’ve watched colleagues reach for this compound in cross-coupling screens, where its robustness often reveals unexpected reactivities not seen with others in the benzoic acid family.
Anyone who has spent years in organic labs knows that substituting similar-sounding reagents has a cost. I’ve swapped in 3-bromobenzoic acid or 5-cyanobenzoic acid under pressure, only to find that neither matches the versatility or selectivity of the dual-functionalized ring. Those single substitutions react predictably, sure, but sometimes with sluggish rates or unwanted byproducts that clog the next step in a synthesis. Here, the combination of bromo and cyano gives unique control: you’re not guessworking the best site to attach a boronic acid or searching literature for precedents on rare regioisomers.
Products missing either group may cost less, but short-term savings can vanish in lost purity or repeat synthesis work. Reproducibility stands tall: every time I’ve compared batches from reliable sources, the analytical data stays tight, and the color and texture remain consistent. A researcher doesn't need long to link results back to reagent quality.
University research teams and R&D labs feel the squeeze from timelines and funding constraints. A chemical like 3-Bromo-5-Cyanobenzoic Acid pulls its own weight not only in clean reaction metrics but also in the intangible currency of trust. Knowing reactants are up to spec lets teams focus on creative steps, not quality troubleshooting. Over the years, I’ve missed deadlines waiting for replacement shipments of lower-grade acids or spent late nights running extra TLCs—not once has a properly sourced batch of this product caused those headaches.
In startup ventures and pilot manufacturing, where downtime chews through working capital, dependable input materials draw the line between promising trials and stalled programs. You feel this difference whether you’re stepping through early SAR campaigns, mapping out new chemical space, or bringing modified aromatic compounds closer to scale-up.
Seeing new hires pick up a bottle, weigh their first batch, and nail their reaction feels like building continuity in a field where talent turnover runs high. The compound’s straightforward handling, distinct odor, and easy solubility in many polar organic solvents help undergraduates and seasoned chemists alike gain confidence fast. A product that delivers on accuracy and freshness does more than move molecules—it lays the groundwork for good science. It’s easy to tell in the record books when a project sticks with premium-grade 3-Bromo-5-Cyanobenzoic Acid; the clean spectra and robust yields speak for themselves.
Looking across my years at the bench and in process development, the discussions often circle back to reliability. Labs that never skimp on ingredient quality consistently show more meaningful output, lower waste, and fewer failed batches. Choosing the right benzoic acid derivative isn’t a flashy innovation, but over time, these choices determine the research trajectory. Students trained with the good stuff bring a healthy skepticism and a sharp eye for detail to their next roles.
If you scan through the literature, journals like the Journal of Organic Chemistry and Synthesis have published case studies showing the importance of reagent choice. For example, a team working on new heteroaromatic frameworks documented that switching from a generic benzoic acid to the 3-bromo-5-cyano variant led to product yields jumping by 10-20%, without increased side reactions or laborious purifications. These gains seem small at first glance, but stacked across months and dozens of projects, they add up to real time and money saved.
Best practices suggest storing this compound in a cool, dry place, away from sunlight—simple measures, yet crucial for maintaining high purity. If contamination enters mid-project, not only does it threaten current target molecules, but it can also distort downstream biological testing and affect entire research programs. Every chemist learns to respect the fragility of a synthetic chain. Once a batch of product reaches the shelf at high quality, it builds trust—within teams and between suppliers and buyers.
Costs can rise for high-purity, dual-substituted aromatic acids, especially in regions where supply chains remain tight or tariffs disrupt imports. Labs might feel tempted to cut corners by buying bulk or switching to less expensive single-substituted acids, only to encounter more reruns or unanticipated byproducts down the line. I’ve seen some labs move toward pooling resources or negotiating bulk orders directly with trusted vendors, helping keep price hikes manageable while protecting quality.
Sustainability draws attention as well. Older manufacturing routes for this acid have involved hazardous solvents or reagents tough to handle at scale. Modern advances allow more environmentally conscious processes—greener solvents, milder conditions, and better waste management. I've spoken with manufacturers who adjusted their procedures after recognizing the upfront investment in greener tech means fewer headaches for both them and their customers down the road. As more buyers insist on cleaner production, markets tend to follow suit.
Life at the bench quickly shows the difference between “almost good enough” and “flawless.” Products like 3-Bromo-5-Cyanobenzoic Acid earn loyalty through transparency and performance, not just price. No matter the brand, what counts in daily academic or industrial work is the freedom from troubleshooting unexplained failures. Quality compounds steer projects onto firmer ground, freeing teams to test bold new ideas and trust that their hard work translates to meaningful data, not mishaps.
In the past decade, as research networks stretch across continents and timelines tighten, unanticipated delays from poor-quality materials sting even more. What I’ve seen is that companies and teams sticking with proven, well-vetted compounds stay ahead of the learning curve. Their papers and patents mention fewer “unexpected results” and track more direct progress, largely because they sidestep dead ends created by untrustworthy reagents.
Young researchers keep finding new uses for this compound that didn’t seem obvious years ago. In photochemical studies, the bromo and cyano pairing can adjust emission wavelengths in ways that single substitutions can’t, helping open up new classes of sensors and materials for electronics. Peptide chemists now fix this acid onto backbones looking to optimize water solubility and metabolic stability in preclinical drug candidates. In my own projects, it’s become a workhorse for rapid synthesis of building blocks that can withstand tricky downstream conditions.
Machine learning and AI-driven reaction screening, now common in major pharmaceutical firms, thrive on the high reproducibility and clean reactivity of such benzoic acids. Accurate data generation depends on knowing every mole of starting material matches the literature standards. The future likely holds even more applications, particularly as synthetic biology and advanced polymer research expand into territory where unusual functional groups provide new properties.
Overall, 3-Bromo-5-Cyanobenzoic Acid stands out because it quietly eliminates variables and keeps research moving. Staff and students new to the field quickly learn what “high-quality starting material” means through working with such compounds. Their work flows smoothly, their data come out sharper, and they waste less time running down confusing errors. This shared experience helps organizations build cultures of trust and technical rigor, leaving more room for creative thinking and less room for wasted effort.
Clinical and regulatory deadlines have never been more demanding, particularly as health and safety agencies around the world demand traceable records and clear analytical evidence for every chemical used in early-stage R&D. Choosing the right acid upfront tips the odds in favor of quick approvals and successful handoffs between discovery and manufacturing—a truth that no amount of clever chemistry can sidestep.
As more chemical suppliers recognize these benefits, savvy sourcing teams pay close attention to documentation, country of origin, and customer feedback. Reliable vendors earn repeat business by keeping impurities down and batch records transparent. I’ve seen entire procurement teams switch suppliers after a poor-quality order, and the ripple effect reinforces the importance of sticking to what works.
Many younger chemists bring fresh eyes to classic reagents, applying creative thinking to what once seemed settled. Their constant quest for better selectivity, lower costs, and greater environmental responsibility keeps products like 3-Bromo-5-Cyanobenzoic Acid at the forefront of research supply lists. Seasoned hands weigh in with stories—some successful, some cautionary—making clear that lessons learned at the bench often carry more weight than glossy marketing.
One area where the field can still improve is in information sharing. Cross-industry databases and benchmarking projects mean buyers can spot outlier batches before projects even start, and independent labs keep suppliers honest. Power rests in sharing firsthand experience through preprints, open forums, or professional networks, giving early warning of both standout suppliers and those still catching up.
The movement toward greener chemistry runs parallel. Researchers, students, and vendors push for more transparency around manufacturing impacts and product life cycles. Everyone gains from clear protocols and evidence-based storage guidance—lots of old frustrations vanish as best practices spread. A new generation of chemists, trained on reproducible, high-purity products, will carry high standards into every corner of the scientific community.
As a scientist who has handled benzoic acids for years, I end up respecting the products that quietly solve problems. Watching a reaction run smoothly, a spectrum come up clean, or a student hit yields above expectations—these reminders add up to more than data points. They shape the habits and attitudes that drive research forward, day in and day out.
Students and professionals intending to build careers at the cutting edge benefit from knowing why every bottle, every label, and every certificate of analysis matters. Investing in proven chemistry is no extravagance; it’s the backbone of work that counts in peer review, patent applications, and the training of new minds. 3-Bromo-5-Cyanobenzoic Acid doesn’t attract much fanfare, but among those who know, it anchors projects, eases process handoffs, and underpins the kind of work everyone wants their name associated with.