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HS Code |
996097 |
| Chemical Name | Chloropyrazine |
| Molecular Formula | C4H3ClN2 |
| Molecular Weight | 114.54 g/mol |
| Cas Number | 108-85-0 |
| Appearance | White to light yellow crystalline solid |
| Melting Point | 120-123°C |
| Boiling Point | 210-213°C |
| Density | 1.36 g/cm³ |
| Solubility In Water | Slightly soluble |
| Synonyms | 2-Chloropyrazine |
| Smiles | C1=CN=CC(=N1)Cl |
| Inchi | InChI=1S/C4H3ClN2/c5-4-3-6-2-1-7-4/h1-3H |
As an accredited Chloropyrazine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Chloropyrazine is supplied in a 100-gram amber glass bottle with tamper-evident cap, labeled with hazard pictograms and safety information. |
| Shipping | Chloropyrazine is shipped in tightly sealed containers, typically made of glass or high-density polyethylene, to prevent moisture and contamination. Packages are clearly labeled and conform to hazardous material regulations. During transit, it is protected from heat, direct sunlight, and incompatible substances to ensure safe delivery and chemical stability. |
| Storage | Chloropyrazine should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers. Keep away from direct sunlight, heat, and sources of ignition. Store in a designated chemical storage cabinet, clearly labeled, and follow all relevant safety and regulatory guidelines for hazardous materials. |
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Purity 99%: Chloropyrazine with 99% purity is used in active pharmaceutical ingredient synthesis, where high reaction yield and minimized impurities are ensured. Melting Point 68°C: Chloropyrazine with a melting point of 68°C is used in agrochemical intermediate production, where precise thermal processing enhances product formation. Moisture Content <0.5%: Chloropyrazine with moisture content below 0.5% is used in heterocyclic compound manufacturing, where reduced hydrolysis increases shelf stability. Particle Size 10 µm: Chloropyrazine with a particle size of 10 µm is used in slurry formulations for industrial coatings, where uniform dispersion improves film consistency. Stability Temperature 120°C: Chloropyrazine stable up to 120°C is used in high-temperature catalyst synthesis, where thermal resistance preserves molecular integrity. Molecular Weight 113.54 g/mol: Chloropyrazine with molecular weight 113.54 g/mol is used in custom organic synthesis, where compatibility with stoichiometric calculations streamlines process control. Viscosity Grade Low: Chloropyrazine of low viscosity grade is used in liquid-phase chemical reactions, where enhanced solubility accelerates reaction kinetics. Assay ≥98%: Chloropyrazine with an assay of at least 98% is used in fine chemical production, where consistently high content delivers reliable batch-to-batch quality. |
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Chloropyrazine often slips under the radar for many outside the specialty chemical world, and that’s a real miss. Chemists look for purity, consistency, and performance when choosing building blocks for synthesis, and this molecule delivers on all three fronts. As demand for pharmaceuticals and agricultural improvements ramps up worldwide, a closer look at how distinct chemical intermediates like Chloropyrazine perform becomes more essential. Years ago, starting out in the lab, I learned quickly that some reactants caused more headaches than solutions—chalky solids that refused to dissolve, questionable origins, unpredictable impurities. Chloropyrazine stood out even then for its no-nonsense reliability.
Chloropyrazine, with its characteristic aromatic ring featuring both a chlorine and pyrazine functionality, serves as a trusted intermediate in many synthetic routes. The model most encountered, 2-chloropyrazine, features a chlorine atom at the second position of the pyrazine ring. For me and many colleagues, this compound opens doors to innovative chemistry—not just because of its versatility, but because batch-to-batch quality remains consistent. You quickly notice the difference during reactions: it handles well under a range of temperatures and solvents, and offers a clean path for downstream modifications.
Chemists and technicians spend time scrutinizing reagents, and Chloropyrazine rarely raises concerns on arrival. Standard purity checks line up with expectations; most reputable sources provide product that meets or exceeds pharmaceutical-grade standards, usually above 99% purity. As a low-melting, pale crystalline solid, it avoids the clumping and caking I’ve faced with other heterocycles. Solubility sits at a practical level—easily manageable in common organic solvents, neither fussily hydrophobic nor so soluble it creates downstream workup challenges.
Handling presents no major surprises. Reasonable smell, low volatility, and manageable dust all mean fewer complaints in the lab. Nothing about it reminds me of the sulfurated or sensitizing agents that leave everyone reaching for a mask. This matters in scale-up. Moving from initial bench-scale experiments to multi-kilogram preparations usually tests the patience of every member in R&D. Yet, a drum of Chloropyrazine never turns into a pitfall; consistency emerges as one of its strong suits.
Every researcher encounters situations that call for an agile intermediate. In drug discovery, Chloropyrazine serves as a core template for crafting a range of anti-infectives, cancer therapeutics, and enzyme inhibitors. Over the years, journals have documented routes where substitution around the pyrazine ring—enabled by that chlorine group—sets up scaffolds for the next steps. Medicinal chemists appreciate how this flexibility speeds up molecular design. Early in my career, a project needed a portfolio of heterocyclic compounds for kinase inhibition studies. Using Chloropyrazine reduced synthetic complexity and helped identify promising leads more efficiently.
For agrochemicals, the pyrazine motif shows up across herbicides and crop-protection compounds. Farmers want better options to protect crops against disease and blight, yet regulations keep tightening. By starting with Chloropyrazine, researchers in agricultural chemistry create candidates that balance robust activity with environmental stewardship. In one collaborative project, we traced the difference that a clean batch of Chloropyrazine made: higher yield, fewer side products, and less waste in purification.
Applications stretch beyond pharmaceuticals and fields. Material scientists find value in that reactive site chlorine, too—opening the gate to tailor-made ligands for catalysis or complexation. Analytic chemists explore it as a tag for making standards with clear detection signatures. That diversity of use reflects a kind of workhorse reliability missing from less tested intermediates.
A lab lives or dies by its intermediates, and Chloropyrazine draws clear lines against competitors. Compare it with isomeric compounds—say, 3-chloropyridine or 2-chloropyrimidine—and subtle differences add up to major impacts in practice. Chloropyrazine participates in cross-coupling chemistry with greater efficiency, often because electronic effects around its nitrogen atoms activate it for many transformations. This becomes obvious during Suzuki or Buchwald-Hartwig aminations, where yields and purification profiles are cleaner.
Another edge comes from its production routes. Over the past decade, manufacturers invested in refining purification and crystallization protocols for Chloropyrazine, so buyers deal with fewer residual contaminants. That level of control means analytical chemists often skip a round of chromatography, saving time and money. When you compare that experience to picking up a bottle from less reputable suppliers—where end-of-line testing for residual halides, nitrogens, or trace metals sometimes fails to catch all the outliers—the decision seems obvious.
I remember substituting in a batch of 2-chloropyridine because of a last-minute shortage years ago, only to face sluggish conversions and more byproducts in each step. It slowed down every part of the project. Swapping back to Chloropyrazine cleared the blockage overnight. Differences like that may look like tweaks on paper, but no other substitute that I’ve used brought that same level of problem-free performance, especially as projects scale up.
Medicinal chemistry is never a straight line. Routes shift, targets move, and intermediate choices can make or break an entire campaign. What’s mattered most in my experience has been finding reagents that don’t throw curveballs as conditions change. Chloropyrazine’s functional group sits in a sweet spot. It’s tough enough to survive initial steps, but reactive enough for late-stage substitutions. This consistency puts it in the toolbox for key classes of molecules, from antimicrobial agents to anti-inflammatories.
Even beyond synthesis, analytical traceability grows in importance. Regulatory environments get stricter each year. Pharmaceutical companies must guarantee the purity and provenance of each component across the chain. The ease of tracing batches and verifying origins with Chloropyrazine stands out. Reliable suppliers record every step, which cuts compliance headaches and speeds up regulatory review. Nobody wants to repeat a month’s synthetic work because of ambiguous records.
Anyone who’s worked in a shared laboratory for a few months develops a sense for chemicals that invite trouble. Leaky containers or noxious outgassing can clear a room and stall productivity. Chloropyrazine usually doesn’t cause such disruption. Its manageable toxicity profile and relatively mild environmental footprint support safer handling, both in the lab and through disposal channels. Safety data sheets back this up—no excessive warnings about skin absorbance or persistent metabolites.
On the regulatory front, Chloropyrazine aligns with efforts across industry to minimize accidental exposures and waste. Waste management streams can capture, neutralize, or degrade residues without exotic procedures. In my own lab, standard PPE and good fume hoods suffice—no need for the kind of full containment protocols that some legacy intermediates demand. This not only cuts operational overhead, it also raises confidence for new staff members learning their way around hazardous chemicals.
Years in procurement have taught me how wild the range in intermediate quality can be. With many reagents, especially in the early days of a supply contract, you discover surprises during analysis: off ratios, rude colorations, faint odors signaling instability, or ghost peaks on the HPLC chromatogram. The shift to major manufacturers for Chloropyrazine improved matters. Most suppliers invest in robust quality management systems, with regular, documented process audits and third-party verification. Even during supply chain disruptions, the frequency of off-spec batches remains low compared with more exotic heterocycles.
Trust in the chain of custody becomes especially important for regulated sectors. Consistently verifying purity and identity with each shipment prevents project hiccups. For Chloropyrazine, certificates of analysis are usually accurate and correspond to actual tests, not just batch estimates. My experience with sourcing cheaper alternatives led to more rework than it saved—remediation work, added purifying steps, and a mountain of paperwork. That only underscored the long-term value of sticking with high-assurance channels for this intermediate.
No chemical intermediate comes without trade-offs. Labs operating on tight budgets sometimes struggle to justify the premium for high-purity Chloropyrazine. At the same time, the rise of counterfeit products, especially from minor suppliers, has sharpened the focus on transparency. Authentic Chloropyrazine brings more than purity; it offers a line of defense against costly project delays and failed audits. In a crowded market, that matters more than ever.
Supply resilience remains another area of attention. As global demand for pharmaceuticals and agrochemicals grows, so does competition for precursor materials. Smart purchasing professionals take the long view here—looking upstream in the supply chain and working with vendors who prove their stability and ethical sourcing. Chloropyrazine’s producers who adopt sustainable synthesis practices, like streamlined chlorination processes or solvent recycling, open the way for more robust partnerships with institutional buyers. It’s reassuring to see collaborating companies step up to share best practices.
Industry voices echo the need for standardized, peer-audited sourcing and robust end-user feedback. One area that could help: establishing independent clearinghouses for chemical quality data, much like reference labs do for biological reagents. By sharing third-party analysis transparently, buyers and R&D staff gain confidence and reduce waste. In my own collaborations, direct exchange of quality metrics between labs cut down on redundant testing and built trust—with better downstream science as a result.
For smaller firms, group purchasing cooperatives offer another lever to balance cost and quality. By pooling orders and negotiating actively with leading vendors, even early-stage ventures access top-grade Chloropyrazine at fair prices. These collaborative approaches mirror successes recently seen in the biotech sector, enabling innovation without sacrificing quality. As regulatory burdens grow, mutual assistance between organizations can spread compliance knowledge and distribute risk more evenly across stakeholders.
Experienced chemists often pass along shortcuts for handling classes of chemicals, and Chloropyrazine is no exception. Keeping it dry and protected from strong acids helps maintain shelf life and performance. Opening fresh bottles in low-humidity environments avoids unnecessary hydration, which could slow certain reactions. Freshness counts, too; cataloguing dates on containers supports smarter stock rotation. These small habits, learned hands-on and from seasoned mentors, add up to smoother, less stressful production runs.
For any formulation process or pilot-scale trial, logging each step—weight, solvent, temperature, color changes—helps track down rare issues that might arise. Over the years, my own notes about unusual residue or solvent interactions rescued projects from repeating small but costly missteps. Sharing these logbooks across teams lets less experienced staff build skills without repeating avoidable mistakes.
Working with a consistently reliable intermediate like Chloropyrazine ends up showing just how much experience shapes chemical strategy. Early on, I tried to cut every corner and chase the lowest sticker price, only to lose time and output with reject batches. With each project, it became clearer that investing in precise, proven reagents pays back again and again. Feedback loops—between sourcing, R&D, regulatory, and even environmental health and safety—grow tighter and more effective when the core ingredients cooperate instead of creating new challenges.
Continuous learning keeps process chemistry vibrant. As new methodologies emerge—such as greener synthesis or digital QC tracking—proven workhorses like Chloropyrazine remain core. Not because they are the trendiest, but because reliability and flexibility matter more now than ever. Listening to frontline technicians and end users, who see problems before they spiral, gives real-world context that no product brochure delivers. Their insights about storage, reactivity, and unexpected interactions help the whole field improve, one project at a time.
All signs suggest demand for intermediates like Chloropyrazine will climb as personalized medicine, advanced agriculture, and next-generation materials claim larger shares of the economy. Proven intermediates anchor risk management strategies, enabling scientists and engineers to innovate without uncertainty about their reliable building blocks. The collective wisdom of global chemists—hard-won through decades of hands-on use—serves as a guide through both routine and cutting-edge projects.
As I look back, the case for Chloropyrazine stands anchored in every successful synthesis where timelines held, batches passed QA, and colleagues wrapped up a challenging run with full confidence in their tools. No single product can solve all challenges, but well-characterized, dependable reagents lower hurdles so creative science can thrive. For teams facing new projects, deeper regulatory scrutiny, and unpredictable markets, knowing the difference between a gamble and a proven asset draws a clear line. Chloropyrazine continues to provide that certainty, transforming a technical choice into an operational advantage, one reaction at a time.