|
HS Code |
937866 |
| Chemicalname | 2-Bromo-3-cyanopyridine |
| Molecularformula | C6H3BrN2 |
| Molecularweight | 183.01 g/mol |
| Casnumber | 21434-89-5 |
| Appearance | White to pale yellow solid |
| Meltingpoint | 54-58 °C |
| Boilingpoint | 310.7 °C at 760 mmHg |
| Density | 1.72 g/cm³ |
| Purity | Typically ≥98% |
| Solubility | Slightly soluble in water, soluble in organic solvents |
| Synonyms | 2-Bromo-3-pyridinecarbonitrile |
| Smiles | C1=CC(=C(N=C1)C#N)Br |
| Inchi | InChI=1S/C6H3BrN2/c7-5-2-1-3-9-6(5)4-8 |
| Refractiveindex | 1.624 (predicted) |
| Storageconditions | Store in a cool, dry, well-ventilated area away from incompatible substances |
As an accredited 2-Bromo-3-cyanopyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle, 25 grams, tightly sealed with screw cap; labeled with 2-Bromo-3-cyanopyridine, CAS number, and hazard symbols. |
| Container Loading (20′ FCL) | 20′ FCL container loads approximately 12 metric tons of 2-Bromo-3-cyanopyridine, securely packed in drums or fiberboard boxes for safe transport. |
| Shipping | 2-Bromo-3-cyanopyridine is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. Transport complies with regulations for hazardous chemicals, often requiring appropriate labeling and supporting safety documentation. The package is cushioned to prevent breakage and typically shipped via ground or air by certified hazardous materials carriers. |
| Storage | 2-Bromo-3-cyanopyridine should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from sources of ignition, heat, and incompatible materials such as strong oxidizing agents. Protect from moisture and direct sunlight. Ensure proper labeling and use secondary containment to prevent spillage. Follow all applicable safety protocols and local regulations during storage. |
| Shelf Life | 2-Bromo-3-cyanopyridine has a shelf life of at least 2 years if stored tightly sealed in a cool, dry place. |
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Purity 99%: 2-Bromo-3-cyanopyridine with purity 99% is used in pharmaceutical intermediate synthesis, where it ensures high yield and product consistency. Melting point 75°C: 2-Bromo-3-cyanopyridine with a melting point of 75°C is used in organic synthesis processes, where it provides thermal stability during reaction steps. Stability temperature 120°C: 2-Bromo-3-cyanopyridine showing stability up to 120°C is used in heterocyclic compound manufacturing, where it minimizes decomposition under reaction conditions. moisture content <0.5%: 2-Bromo-3-cyanopyridine with moisture content less than 0.5% is used in catalyst preparation, where it prevents unwanted side reactions. Particle size D90 < 50 µm: 2-Bromo-3-cyanopyridine with particle size D90 below 50 microns is used in fine chemical processing, where it promotes better solubility and reactivity. |
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Every chemist knows the frustration that comes with finicky reagents. You queue up your reactions, run your TLC, and in the end, you just want results you can count on. 2-Bromo-3-cyanopyridine has shown itself as a trustworthy intermediate, especially for those chasing after efficiency in pharmaceutical or agrochemical research. Nobody likes surprises when it comes to reproducibility, and 2-Bromo-3-cyanopyridine delivers with consistent chemical behavior run after run. Its molecular formula, C6H3BrN2, means it packs two highly reactive groups—a bromine and a cyano moiety—right onto a pyridine ring. This opens the door to a broad span of transformations. When you’re striving for selectivity or trying to build complexity with minimal steps, having a reagent like this at arms’ reach can save hours in the lab.
In my own experience working with various pyridine derivatives, compounds like this one stand out not just for their structure, but more for the chemistry they enable. Typically, I’ve found 2-Bromo-3-cyanopyridine playing a central role in Suzuki and Buchwald-Hartwig couplings. Researchers gravitate towards its bromine handle—it’s reactive enough for smooth cross-coupling but doesn’t overreact with bases or ligands. The cyano group provides another avenue; I’ve seen teams capitalize on it for nucleophilic addition, which can push the molecule toward a range of heterocyclic frameworks. Authenticity in chemical feedstocks cuts down on purification headaches too. The best suppliers I’ve worked with ensure low moisture and minimal residual solvents so you can focus less on impurity profiles and more on getting forward in your synthesis.
2-Bromo-3-cyanopyridine finds itself compared often to simpler pyridine halides or nitriles, but the combined presence of both functionalities sets it apart. In practical terms, I’ve worked with 3-cyanopyridine and 2-bromopyridine independently and, honestly, the chemoselectivity isn’t the same. The interplay between bromine and cyano substituents changes electron density around the ring, steering reactions toward different products than you might get with one group alone. There’s a subtlety here that experienced synthetic chemists will recognize—sometimes you need both handles for stepwise functionalization or orthogonal protection strategies in drug discovery. Having the option to run a coupling off the bromine then use the nitrile for downstream amination, for instance, really expands the synthetic map.
Purity gets a lot of talk in specifications, but what does it mean day-to-day? With intermediates like 2-Bromo-3-cyanopyridine, purity above 98% almost always translates to cleaner NMRs, tighter melting points, and fewer headaches when scaling up. Synthetic success hangs on little things: batch-to-batch consistency, low trace metals, absence of isomeric impurities. I remember working on a project with a low-purity batch—columns clogged, byproduct formation soared, timelines slipped. In comparison, high-grade 2-Bromo-3-cyanopyridine offers peace of mind so effort goes into innovation and not troubleshooting.
Time is the scarcest resource in research. Every chemist has regretted spending a week optimizing a reaction because starting materials were subpar or poorly soluble. 2-Bromo-3-cyanopyridine dissolves readily in common organic solvents, allowing for straightforward scale-up. Whether you’re pushing a few milligrams on a route scouting run or launching a multi-gram pilot batch, ease of handling and solubility matter. Bottlenecks disappear, and you can move from initial hits to robust routes on a tighter schedule. Experienced teams will recognize this as a practical advantage over more stubborn or insoluble intermediates, which throw off workflows and stretch budgets.
Personal experience reminds me every chemical’s quirks favor respect over complacency. With 2-Bromo-3-cyanopyridine, I wear gloves and use a fume hood. Although acute toxicity is generally lower than some aggressive alkyl bromides, stuff like this benefits from proper ventilation and careful storage. If you’re routinely working above room temperature or with base-sensitive chemistries, it won’t typically off-gas or decompose under normal conditions, which helps reduce risk in the day-to-day running of a lab. Labels alert to irritant properties and care for accidental splash or inhalation risk, but in practice, attention to housekeeping and storage generally keeps surprises at bay.
The discussion around chemicals no longer stops at performance or price. Ecological impact gets a seat at the table in any forward-looking R&D group. Unlike legacy halogenated intermediates with heavy environmental costs, 2-Bromo-3-cyanopyridine offers a lower volatility profile, which means less evaporative loss and a lighter burden on the lab’s air controls. In my own practice, proper waste management—segmenting halogenated waste drums and strictly logging disposal—helps limit environmental impact. I’ve worked on teams implementing green chemistry metrics, and intermediates like this can fit well into processes with fewer hazardous byproducts. When envisioning a project’s lifecycle from bench to bulk, any tweak that simplifies compliance without sacrificing reactivity feels like a net win.
Organic chemists are always under pressure to shorten routes. The more complexity you can introduce in a single step, the fewer protective or deprotection maneuvers you face. 2-Bromo-3-cyanopyridine excels here, giving a launching pad for rapid molecular elaboration. The bromine atom serves as a gateway for palladium-catalyzed couplings, and, from what I’ve experienced, you can run these reactions under relatively mild conditions without frustrating side reactions. Once that handle’s transformed, the cyano group’s unique polar reactivity creates further opportunity: amidine synthesis, cyclization, reductions, or even organometallic additions all become approachable projects. You move faster, cut back on consumables, and boost overall throughput, which pays off in real research timelines and grant proposals alike.
Nothing in the lab ever works 100% of the time; that’s just life in synthesis. With 2-Bromo-3-cyanopyridine, the main snags I’ve run into involve over-coupling or hydrolysis if aqueous work-ups run too hot or long. Switching to milder bases or better temperature control usually restores order. Handling brominated intermediates means being alert to batch instability under direct sunlight: this compound stores well in amber glass or foil-wrapped bottles at typical lab temperatures. On bigger runs, scale-up snags sometimes appear as slow dissolving or issues with residual solvent from supplier batches, which can get fixed through short-path distillation or extra drying steps. Knowing these practical workarounds means headaches get solved before they become roadblocks.
Years working with halopyridines and nitrile-substituted heterocycles taught me that not all intermediates operate in the same league. Comparing 2-Bromo-3-cyanopyridine to 2-chloropyridine or 3-bromopyridine, it’s clear their reactivity diverges in real-world reactions. Chlorinated analogs often require higher energy or more forcing conditions to push couplings forward. Switching to a brominated nitrile saves on catalyst loading and narrows side product windows. I’ve watched teams try to retrofit older routes with less functionalized materials, only to come back to the combined utility of this dual-substituted pyridine for fewer steps and better selectivity. It underscores the value of investing in the right starting material from the outset.
In pharmaceutical settings, deadlines press hard. Preclinical teams search for molecular diversity and thorough SAR (structure-activity relationship) coverage. 2-Bromo-3-cyanopyridine speeds up this process, letting chemists install different side chains at the bromine site or transform the cyano group into amines, carboxamides, or heterocyclic linkers. I’ve been involved in campaigns where the modular nature of this intermediate enabled quick iterations—couple, transform, screen, repeat. This freedom lets medicinal chemists pivot quickly between hit optimization and lead series expansion. The end result isn’t just speed, but more thoughtful compound libraries for downstream testing and development.
My time collaborating with agrochemical researchers highlighted how every bit of synthetic flexibility gets magnified at scale. In agrochemistry, new active molecules arise from hundreds of variations in lead scaffolds. Using 2-Bromo-3-cyanopyridine as a starting point supports combinatorial and parallel synthesis platforms, vital for discovering new herbicides or fungicides. Its dual reactive sites mean one scaffold can yield many candidates with slightly tweaked bioactivity, positive in a patent-heavy and regulation-ridden market. Smart use of this building block sometimes means hitting cost or volume constraints without starting from scratch on new synthesis routes.
Translating benchtop wins into pilot plant batches presents a persistent challenge in process chemistry. I’ve worked through scale-up projects where solubility, impurity carryover, or exotherms can torpedo project timelines. With 2-Bromo-3-cyanopyridine, the jump from gram to multi-kilogram scale often proves smoother than with less crystalline or more volatile intermediates. It’s less prone to caking or loss in transfer, and robust storage means shelf life isn’t a headache during project pauses. If downstream chemistry needs isolation or crystallization steps, you can pull pure material without elaborate chromatographic tricks. This practicality flows down to smoother handoffs between process R&D and manufacturing, where repeatability isn’t just nice to have—it’s essential.
Every chemist accumulates stories of reactions that misbehave or materials that save the workday. My first experience prepping a library for kinase inhibitor screening, 2-Bromo-3-cyanopyridine’s bromine proved more forgiving than its chloro cousin—higher yields, less off-target alkylation, and easier purification. On another project aiming for a novel pyridyl amine scaffold, direct reduction of the cyano group bypassed worry about unprotected groups elsewhere. The ability to adapt and switch between methods on the same core intermediate cut out dead ends and made the synthetic work more enjoyable. These memories stand out not because the chemistry was complex but because the building block worked where others didn’t, saving calendar time and frustration.
Open markets for laboratory reagents offer plenty of choice, yet not all sources weigh equally. Over the years, I’ve compared batches of 2-Bromo-3-cyanopyridine from different suppliers across Asia, Europe, and North America. Globalization brings price competition but also risk—I've seen differences in purity, appearance, and even solubility that trace to manufacturing route or packaging. Commodity pricing doesn't always signal quality. Trustworthy sources offer transparent batch data, authentic analytical certificates, and responsive customer support. For labs without resources to retest every bottle, sticking with recognized suppliers—ideally those with ISO-rated facilities—delivers time savings and peace of mind. In fast-paced research circles, reliable sourcing supports progress and safety without compromise.
Even the best supplier's certificate doesn’t relieve the end user of quality diligence. From firsthand experience, every fresh batch deserves a quick check—melting point, thin-layer chromatography, and NMR scan. I’ve learned the hard way: small contaminants, if missed, can trigger failures in follow-on chemistry or even encourage larger-scale process hitches. For high-priority targets, especially in regulated industries, this hands-on assurance goes beyond compliance; it’s about maintaining trust in the data and reproducibility at every stage.
Looking to what’s next, this intermediate sits poised for more applications. Advances in catalysis, photoredox methods, or flow chemistry may unlock even milder or greener transformations using its reactive handles. In the last few years, publications have shown new tactics for modifying pyridine-based molecules, especially for late-stage functionalization, and this compound often shows up as a reliable starting point. Collaborators in academic and industrial settings increasingly value tools that let them adapt and innovate quickly. Reflecting on my own journey through dozens of synthetic routes, intermediates like this have shifted from niche reagents to mainstream essentials, supporting everything from published total syntheses to commercial project launches.
2-Bromo-3-cyanopyridine doesn’t just offer another option on the shelf. Its blend of reactivity, purity, and straightforward handling makes it a linchpin for efficient research and product development. From the user’s perspective, the differences are clear in workflow improvements, time saved, and steady results. While every chemist tailors reactions to their unique context, having a building block like this in regular rotation simplifies not just routes, but the broader challenge of advancing science under resource constraints. That underlying reliability—and a track record built on countless successful syntheses—pushes this material from commodity to valued tool. A good reagent won’t solve every problem, but it certainly makes the road to better innovation a bit smoother.