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Tetramethylpyrazine Hydrochloride

    • Product Name Tetramethylpyrazine Hydrochloride
    • Alias Ligustrazine hydrochloride
    • Einecs 699-917-8
    • 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

    249333

    Productname Tetramethylpyrazine Hydrochloride
    Casnumber 36052-34-1
    Molecularformula C8H12N2·HCl
    Molecularweight 172.66 g/mol
    Appearance White to off-white crystalline powder
    Solubility Soluble in water
    Meltingpoint 205-210°C (decomposes)
    Storage Store in a cool, dry place, protected from light
    Purity ≥98.0% (by HPLC)
    Application Pharmaceutical intermediate
    Synonyms Ligustrazine hydrochloride
    Ph 4.5-6.5 (1% aqueous solution)
    Stability Stable under recommended storage conditions
    Odor Characteristic, mild

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

    Packing & Storage
    Packing Tetramethylpyrazine Hydrochloride is packaged in a 100g amber glass bottle with a secure screw cap and detailed labeling.
    Shipping Tetramethylpyrazine Hydrochloride is shipped in tightly sealed, clearly labeled containers to prevent moisture and contamination. It is transported under ambient conditions unless specified otherwise and packaged according to regulations for non-hazardous laboratory chemicals. Safety data and relevant documentation accompany each shipment to ensure compliance and safe handling upon arrival.
    Storage Tetramethylpyrazine Hydrochloride should be stored in a tightly sealed container, away from moisture and light, in a cool, dry, and well-ventilated area. It should be kept at room temperature, ideally between 2–8°C. Avoid exposure to incompatible substances such as strong oxidizers. Proper labeling and secure storage are essential to prevent accidental misuse or contamination.
    Application of Tetramethylpyrazine Hydrochloride
    Purity 98%: Tetramethylpyrazine Hydrochloride Purity 98% is used in pharmaceutical synthesis, where it ensures high bioavailability and consistent active ingredient concentration. Melting Point 222°C: Tetramethylpyrazine Hydrochloride Melting Point 222°C is used in drug formulation processes, where it offers reliable thermal stability during manufacturing. Particle Size <10 μm: Tetramethylpyrazine Hydrochloride Particle Size <10 μm is used in injectable preparations, where it provides enhanced dissolution rates and uniform suspension distribution. Stability at 40°C: Tetramethylpyrazine Hydrochloride Stability at 40°C is used in long-term storage applications, where it maintains chemical integrity and potency over extended periods. Water Solubility 20 mg/mL: Tetramethylpyrazine Hydrochloride Water Solubility 20 mg/mL is used in solution-based medicinal products, where it enables rapid and complete formulation without precipitation. Residual Solvent <0.05%: Tetramethylpyrazine Hydrochloride Residual Solvent <0.05% is used in GMP-compliant API production, where it minimizes toxicity risks and meets regulatory requirements. Assay ≥99%: Tetramethylpyrazine Hydrochloride Assay ≥99% is used in quality-controlled pharmaceutical applications, where it guarantees precise dosage and reproducible therapeutic outcomes.
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    Certification & Compliance
    More Introduction

    Tetramethylpyrazine Hydrochloride: From Our Factory Floor to Your Application

    Experience in the Lab and on the Line

    Every batch of Tetramethylpyrazine Hydrochloride leaving our facility has been shaped by years on the production floor. We’ve honed our manufacturing process to deliver a product that meets tight analytical standards, not just the numbers on the certificate but backed by daily quality checks that give confidence during scale-up or downstream processing. Our technical teams run HPLC on every lot to check purity, so each bag performs the same through the last kilo.

    Over the years, we’ve watched the needs of end users shift as product regulations evolve and downstream applications diversify. Research chemists seek reproducible results. Process engineers want dry, free-flowing material with predictable solubility. Product developers—especially in pharmaceutical intermediates or fine chemicals—demand consistent chloride content and low impurities. We've shaped our production line for this. Over time, the best feedback we receive still comes from customers coming back with new challenges, whether that’s achieving tighter residual solvent levels or controlling trace metal content. Walking the factory floor, you see sample after sample carefully tracked and processed, labeled by original batch, ready for your next run.

    Product Overview: Purity and Performance

    In our current offering, the crystalline white Tetramethylpyrazine Hydrochloride stands out for its high assay—typically upwards of 99%—and low moisture content. We apply a proprietary wet-chemistry process and finish with slow, temperature-controlled crystallization to avoid needle-shaped powders and clumping, which most end users in synthesis find both frustrating and wasteful. We understand what a sticky or irregular lot can do for run times and solvent waste, since we've handled those headaches ourselves.

    Each kilogram is manually inspected after packaging to prevent clumping or contamination. We monitor microbial counts, knowing that even low-level bio-burden can throw off bioprocessing or fermentation-based customers. Particle size remains fine and consistent, and we refrain from adding anti-caking agents that might complicate your downstream purification steps.

    Applications Across Industries

    As producers, we see Tetramethylpyrazine Hydrochloride used far beyond a simple intermediate. The compound enters medical synthesis, where a reliable pyrazine backbone is essential for small-molecule drug candidates. For flavor and fragrance manufacturers, purity affects both regulatory reporting and the nuanced notes expected in food-safe blends. In academic labs, reproducibility means more than a number: it means data that can be trusted across semesters and collaborating institutions.

    Knowledge from years of collaborating with different R&D and production teams taught us where small changes in impurity profile or moisture content can have outsized effects, especially in large-scale reactions. Working alongside customers creating anti-thrombotic agents or neuroprotective compounds, we saw firsthand the consequences of impurity drift between lots or storage-related degradation. Because of this, we've focused ongoing resources on long-term stability testing and improved cold-chain packaging solutions.

    The technical teams audit our storage and logistics practices every month, reacting to submissions and suggested handling improvements directly from user feedback. After all, any mistake at our site ripples forward into your QC costs and regulatory audits—we treat your downstream problems like our own.

    Comparing To Other Pyrazine-Based Compounds

    Working at the manufacturer level, we regularly field requests for product comparisons—Tetramethylpyrazine, Trimethylpyrazine, Dimethylpyrazine, and their hydrochloride salts each bring their unique behaviors to lab and plant. The hydrochloride form’s improved solubility helps formulators who work in aqueous systems. It brings gentler handling properties: less static and improved weighability in the open plant environment. Manufacturing with strict control over the hydrochloride ratio reduces batch variability, particularly important for scale-up or transfer from R&D to pilot scale.

    Products like the base Tetramethylpyrazine suit non-polar processes, but in most applications needing water compatibility, the hydrochloride makes downstream steps cleaner and reduces off-odor risks during processing. Early on, we spent significant effort minimizing corrosion in storage and handling—real problems that only come into focus when hundreds of kilos move through a facility—so we designed and maintain our packaging to reduce both moisture uptake and offgassing into shared storage.

    Unlike blended or bulk-purchased lots, our manufacturing control means you receive what you expect each shipment. Over the years, we've encountered the pitfalls of loosely managed sourcing—batch contamination, off-target melting points, or solvents not fully driven off in poorly controlled lots. Our teams have learned how strictly adhering to in-process checks and fresh calibration saves both our customers and us trouble further down the supply chain.

    Why Specifications Matter Beyond the COA

    Real value comes from understanding why a specification exists. We don't set assay standards arbitrarily; decades of batch records demonstrate that the downstream process (especially for API synthesis or specialty materials) demands minimal variability. Take trace metals: even fractions of a percent can alter yields or cause unpredictable coloration in end-products. We keep these levels low and document controls, so customers have data to reference in regulatory submissions.

    Moisture matters, too, not just for stability but for dosing and mixture accuracy. Too much water in the product and you risk changes in physical handling or unexpected reactivity in your formulation. Continuous Karl Fischer titration on the line lets us block batches showing even slight deviations, saving both sides wasted material and time.

    The same logic drives our residual solvent limits. Mass spectrometry picks up low-level residues from our process, and we take action even on readings far below legal thresholds. This discipline saves our team and our customers from regulatory surprises. Whether it’s a cosmetic specification for the food industry or a numerical threshold under drug regulations, our controls start on our own premises long before export paperwork.

    Chemical Structure to Real-World Results

    Production never occurs in a vacuum. We calibrate our plant based on what our downstream users share about their processes. If a shift in the polymorph emerges, we notice through early feedback and adapt our process accordingly. Sharing batch performance data openly with our buyers fosters trust—no one likes surprises three steps down the supply chain.

    A recent project with a pharma partner highlighted why true process stability counts. After switching from a generic, impure source, their process finally passed scale-up audits and regulatory review. The culprit: an untracked isomer in a previous supplier’s lots. By choosing our stable, well-defined material, they resolved both their technical and compliance headaches without endless troubleshooting.

    Every improvement we make traces back to serving real, evolving needs. Stability under varying humidity, confirmed through long-term warehouse studies, improves predictability. Tracking batch-level analytics gives end users confidence when paperwork crosses borders. We take pride in those little things—batch homogeneity, ease of transfer, and complaint-free shipment logs—that don't show up in marketing but are noticed every time a customer comes back with a new project.

    Challenges and Solutions in Production and Supply

    Supply chain disruptions have taught all of us hard lessons about redundancy and consistency. Through the toughest times, we strengthened raw material sourcing, validated multiple process routes, and invested in larger holding capacity. Each change built toward one goal: keeping consistent supply lines open for customers reliant on uninterrupted production.

    In providing Tetramethylpyrazine Hydrochloride, we respond to real-world pressures: regulatory changes, market fluctuations, and, sometimes, rush requirements for urgent development work. Our inventory control ensures finished goods on hand, while feedback from regular users lets us forecast and allocate stocks proactively. Rush shipments and quick re-certification—those didn’t come from a marketing wish list but as a direct result of on-the-ground manufacturing challenges.

    As compliance frameworks tighten around the world—be it in European REACH, US FDA, or China NMPA—we adapt our internal processes for documentation and traceability. Auditors visiting our site see transparent batch records, operator logs, and real-time monitoring. We share these practices with regular users so their own compliance checks run smoothly every time.

    The Manufacturer's View: Tetramethylpyrazine Hydrochloride’s Place Today

    From our side of the supply chain, we see Tetramethylpyrazine Hydrochloride differently than those who only move or trade the product. We know the challenges of scaling up, maintaining consistency across multiple production cycles, and troubleshooting minute changes that show up only after bulk delivery. Each kilo tells a story—raw materials tracked on arrival, process conditions logged, analytical checks repeated.

    What distinguishes real in-house production from simple trading is our control from synthesis through packaging. We update synthesis protocols to keep emission profiles within environmental limits, and track energy use to optimize both cost and sustainability. Waste streams are captured and recycled. These aren’t abstract, feel-good measures; they come from running a responsible operation in today’s chemical industry.

    Keeping the production workforce trained and the equipment state-of-the-art stands as much a part of our product as what’s inside the bag. We’re as transparent with staff about process deviations as we are with customers about batch records. This approach avoids surprises, shortens troubleshooting loops, and translates into reliable Tetramethylpyrazine Hydrochloride, shipment after shipment.

    Innovation and Upgrading the Process

    Looking forward, our investment in both process improvement and user feedback shapes each upgrade. Direct feedback from development chemists and plant managers steers technology upgrades and inspires new process safety systems. Our engineering team draws from actual production data to design process changes, cutting cycle times and reducing risk exposures. No change is made without a clear user benefit or measurable improvement—overengineering serves nobody.

    Continuous flow systems now join batch processes to respond to new environmental and regulatory expectations. These upgrades let us reduce waste generation, open new routes for waste recovery, and deliver more consistent material to market. Batch traceability becomes easier, and deviations can be caught earlier, improving both response time and customer satisfaction.

    Packaging hasn’t remained static either. Our recent adoption of resealable, moisture-impermeable packaging options has shrunk complaints about clumping and loss on transfer. These small changes don’t show up on the product spec, but our regular clients notice the difference in daily operations.

    Working Closely With Users for Better Results

    Relationships with users don’t stop at product delivery. We offer technical support from the people who actually run the process, not just sales reps reading off a datasheet. Regular site visits, virtual troubleshooting, and open data sharing ensure that your problem-solving benefits from our years spent on the manufacturing floor.

    When a new application emerges, our technical team reviews requested adjustments—be it particle size tweaks, impurity reduction, or customized packaging and labeling for global markets. Our scale means R&D innovation can move rapidly from trial batch to production reality. Feedback is actively integrated into the manufacturing workflow, and lessons learned from previous batches feed directly into next week’s runs.

    With each new project, hurdles arise: supply changes, regulatory shifts, or late-stage formulation updates. Fielding those challenges together beats a hands-off supplier relationship. We look for continuous improvement not just for ourselves but for everyone down the line who depends on Tetramethylpyrazine Hydrochloride’s performance and reliability.

    Final Thoughts from the Factory Floor

    Tetramethylpyrazine Hydrochloride presents more than a chemical formula or a COA number; it’s a material story stretching from synthesis vessels, through drying rooms, past QC desks, and into your application. Every order shipped encapsulates our focus on process stability, continuous improvement, and transparent communication.

    Often overlooked are the day-to-day gains that come from a stable supply: less time spent on incoming QC, fewer complaints from the production line, and the assurance that what you receive today will be just as reliable tomorrow. As manufacturers, we welcome ongoing dialogue and new challenges—each drives us to improve Tetramethylpyrazine Hydrochloride for the community that depends on its quality and consistency.