Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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Tizanidine

    • Product Name Tizanidine
    • Alias Zanaflex
    • Einecs 223-147-2
    • 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
    VTB
    Specifications

    HS Code

    145610

    generic_name Tizanidine
    brand_names Zanaflex
    drug_class Muscle relaxant
    mechanism_of_action Alpha-2 adrenergic agonist
    primary_use Treatment of muscle spasticity
    route_of_administration Oral
    dosage_forms Tablets, capsules
    common_side_effects Drowsiness, dry mouth, dizziness
    prescription_status Prescription only
    half_life Approximately 2.5 hours
    metabolism Hepatic (liver, mainly CYP1A2 enzyme)
    excretion Renal (urine)

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

    Packing & Storage
    Packing Tizanidine packaging: A white plastic bottle containing 100 tablets, labeled with dosage, batch number, expiry date, and manufacturer details.
    Shipping Tizanidine should be shipped in tightly sealed containers, protected from light and moisture, and stored at controlled room temperature (20–25°C). Packages must comply with local regulations for pharmaceuticals, including labeling and safety documentation. Handle with care to prevent damage, and ensure secure packaging to avoid contamination or spillage during transit.
    Storage Tizanidine should be stored at room temperature, typically between 20°C to 25°C (68°F to 77°F), in a tightly closed container away from moisture and direct light. It should be kept out of reach of children and pets. Avoid storing it in bathrooms or areas with high humidity to maintain its stability and effectiveness.
    Application of Tizanidine

    Applications of Tizanidine in Industrial Manufacturing

    Tizanidine serves as a critical active ingredient in several regulated downstream sectors. Our manufacturing expertise ensures reliable quality and traceable supply for pharmaceutical producers, custom synthesis partners, and intermediate formulators. Below, we detail verified end-use applications with regulatory, formulation, process, and product guidance for each scenario.

    1. Active Pharmaceutical Ingredient for Muscle Relaxant Tablets

    Pharmaceutical manufacturers incorporate Tizanidine as an API in prescription muscle relaxant tablets targeting spasticity management. Formulation teams adjust content based on regulatory dossier specifications and bioequivalence data. Our standardized crystalline grade meets validated manufacturing protocols, allowing integration into both direct compression and wet granulation lines. Finished products are batched in accordance with region-specific marketing authorizations and clinical indications.

    Industry compliance standards

    • Current Good Manufacturing Practice (cGMP, ICH Q7)
    • United States Pharmacopeia (USP)
    • European Pharmacopoeia (Ph. Eur.)
    • China National Medical Products Administration (NMPA) filings

    Typical usage ratio

    • 1 mg to 8 mg per tablet (varies by final dosage strength and region-specific MA)
    • API content between 1% and 5% w/w in typical solid oral formulations

    Downstream process integration

    • Direct blending with fillers, binders, and disintegrants during premix
    • Pre-granulation dissolution for uniform distribution
    • Inline QC for API assay and content uniformity before compression

    Final product types

    • Prescription oral tablets (various strengths)
    • Film-coated solid forms
    • Physician-supplied compounding bases

    2. Custom Compounded Oral Suspensions for Hospital Formulations

    Hospital and specialty compounding centers utilize pure-grade Tizanidine in liquid oral suspensions designed for precise patient titration. Formulators calibrate dosage on a per-patient basis, considering patient weight, comorbidities, and prescribing protocol. We supply shipper-verified lots with documentation for end-stage traceability and stability. Final suspensions align with compounding pharmacy guidelines and local medication order systems.

    Industry compliance standards

    • United States Pharmacopeia Chapter <797> (Sterile Compounding)
    • USP <795> (Nonsterile Compounding Quality)
    • FDA 503A and 503B Outsourcing Facility standards
    • European Good Distribution Practice (GDP)

    Typical usage ratio

    • 0.2 mg/mL to 2 mg/mL concentration in compounded suspensions
    • Suspension base volume varies by single or multi-dose prescription

    Downstream process integration

    • API weighed, measured, and dispersed with excipients in pharmacy lab
    • Stirring, pH adjustment, and preservative addition after primary dissolution
    • Bottling and label verification under batch records

    Final product types

    • Customized oral liquid suspensions
    • Pediatric titration preparations
    • Hospital-specific specialty compounded dosages

    3. Reference Standard for Analytical Method Validation Laboratories

    Contract laboratories and pharmaceutical QA/QC teams employ Tizanidine as a primary reference standard while validating and calibrating analytical equipment. This process ensures assay accuracy and batch release approval in finished dose manufacturing. We supply analytical-verified, certificate-backed lots to align with regulatory filings and standard operating procedures. All documentation follows local and international certification traceability.

    Industry compliance standards

    • ISO/IEC 17025 Laboratory Accreditation
    • USP Reference Standard requirements
    • ICH Q2(R1) Validation of Analytical Procedures
    • FDA 21 CFR Part 211 (cGMP for Finished Pharmaceuticals)

    Typical usage ratio

    • 1 mg to 10 mg reference standard per calibration batch
    • Actual mass adjusted according to LOD/LOQ curves and instrument method

    Downstream process integration

    • Preparation of HPLC, GC, or UV standard solutions using assay-grade Tizanidine
    • Integration into daily, weekly, or per-batch analytical runs
    • Cross-referencing with system suitability tests prior to sample release

    Final product types

    • Certified reference solutions for in-house and contract lab use
    • System suitability controls
    • Retrospective batch validation archives

    4. Chemical Intermediate for Synthesis of Bulk API Salts

    Bulk API producers process Tizanidine to synthesize regulatory-compliant salt forms for downstream formulation. The conversion process involves precise stoichiometric calculation and stringent reaction condition controls, often in dedicated cGMP cleanrooms. Suppliers must deliver USP- or Ph. Eur.-grade lots for high-yield, low-impurity transformation. Documentation aligns with DMF (Drug Master File) and complete batch traceability for global API markets.

    Industry compliance standards

    • cGMP (ICH Q7) for active pharmaceutical ingredient production
    • FDA DMF registration for salt manufacturing
    • European Pharmacopoeia monograph requirements
    • Regulatory authority inspection (FDA, EMA, NMPA)

    Typical usage ratio

    • 1:1 molar ratio with relevant counterion (e.g., Tizanidine to hydrochloric acid)
    • Adjustments based on target API salt yield and impurity removal efficiency

    Downstream process integration

    • Charge into reactor for controlled acid-base reaction
    • Monitoring for endpoint and requisite pH/temperature profiles
    • Filtration, washing, and drying prior to micronization

    Final product types

    • Tizanidine hydrochloride API
    • Salt intermediates for direct-press tablet lines
    • Chemically stable storage API for export

    5. Research and Development Workflows in Pharmaceutical Discovery

    Drug discovery organizations and preclinical research institutions use calibrated lots of Tizanidine to evaluate new delivery forms and explore novel indications. Researchers dose single-compound panels to validate pharmacodynamics, stability, and compatibility in experimental settings. We fulfill detailed batch documentation and supply micro-scale lots with precise COA and MSDS for lab notebooks and regulatory submissions.

    Industry compliance standards

    • GLP (Good Laboratory Practice)
    • OECD Guidelines for Chemical Testing
    • Institutional Animal Care and Use Committee (IACUC) oversight
    • Local IRB and research ethics approvals

    Typical usage ratio

    • 10 µg/mL to 100 µg/mL in preclinical formulation prototypes
    • Small-scale reaction vessels: 1 mg to 500 mg per batch experiment

    Downstream process integration

    • Dissolution into model excipients or novel delivery carriers
    • Stability testing in simulated matrices
    • Pharmacokinetic studies in animal or cell models

    Final product types

    • R&D prototype tablets, capsules, or suspensions
    • Screening samples for preclinical studies
    • Analytical method development kits
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    Certification & Compliance
    More Introduction

    Tizanidine: Reliable Muscle Relaxant Directly from the Manufacturer

    Understanding Our Tizanidine Production

    At our facility, producing Tizanidine isn’t just a routine task—it’s a responsibility. Our chemists and technicians handle each batch, watching carefully for precision in synthesis and purity in output. Years of practical experience have shaped the way we approach manufacturing. Tizanidine hydrochloride, known for its role in managing spasticity and muscle tightness, demands close attention to detail. We craft it in several specifications, responding to the needs of both research and pharmaceutical-grade clients.

    How Our Tizanidine Differs from Bulk Commodities

    One thing we notice in the market is how poorly some products stack up in consistency and traceability. We stand apart from distributors and traders by controlling every aspect—raw material sourcing, process development, and quality assurance stay in our own hands. Rather than fighting for low prices, we focus on predictability and batch-to-batch uniformity. Our integrated workflow means that we track all input chemicals, monitor each production stage, and pull samples for analysis at critical points. We don’t shortcut critical steps; that’s how we maintain quality.

    Specification Choices and Their Impact

    We offer Tizanidine most commonly as the hydrochloride salt, which appears as a fine white to off-white powder. Over years of operations, we’ve observed that requests for pharmaceutical intermediates or synthesis-scale material typically target two main grades: standard and high-purity. Standard batches satisfy most research labs and intermediate processors. High-purity lots, which undergo extra purification and tighter analytical controls, go to finished dosage facilities. Our in-house retention samples and certificate histories show that tighter purity limits have real, measurable effects on the final tableting stages. Any shortcut at this stage generally causes downstream issues, like unexpected impurities or filtration clogs. Over time, this feedback loop from our customers—mainly manufacturers, not traders—keeps pushing us to raise the bar for quality.

    Daily Practice: Production Details and Handling Challenges

    Technicians on our floor adjust operating parameters based on humidity, temperature variation, and batch scale. Seasonal shifts matter—dry winter air vs. summer humidity both impact crystal formation and drying times. Many outside the industry don’t appreciate how finicky this process can be. If ambient conditions slip out of tolerance ranges, the final powder can clump or alter its particle size. We run environmental controls to avoid these issues, because minor inconsistencies can ripple through to later production steps. Our QA steps catch most out-of-specification lots before they ever leave the plant, and we maintain clear logs and batch histories.

    Packaging: Usability and Storage

    Product integrity doesn’t end when the synthesis wraps up. We focus on keeping Tizanidine stable and free from contamination, so we use double-layer packaging for bulk material. Our operations team learned over the years that simple single bags never cut it—too many opportunities for water ingress, especially in transit. Drums get labeled not just for compliance, but to keep batch information transparent for our clients. Every packaging lot has an attached analytical report, linking back to our in-house test records. This has helped clients quickly track any questions about origin or analytical values. While traders swap bulk sacks without scrutiny, we document every container as it leaves our warehouse.

    Quality Control and Transparency

    Clients often ask what makes our Tizanidine stand out. Most manufacturers claim purity, but few will discuss the steps behind the claim. In our lab, high-performance liquid chromatography (HPLC) and thin-layer chromatography (TLC) run as routine tests to confirm active assay, impurity profile, and residual solvents. We keep all original chromatograms and spectra, not just the summary values. GMP-trained staff calibrate instruments and sign off all paperwork. Our QC team oversees random audits, and results are always ready if customers request a full lot history. Certificates mean more when they’re not separated from the facility and staff involved; that’s an advantage of manufacturing on-site rather than importing from sources that shift over time.

    Why We See Consistency as Essential

    Years of customer feedback have proven how essential repeatability is. One client in the tablet industry noted how minor solubility or impurity shifts can upend an entire formulation run, causing unexpected out-of-spec batches. We support both formulation houses and researchers, so every lot receives careful attention. Our on-site analytical work helps us adjust processes quickly, rather than waiting weeks for off-site results—this closes the loop faster and drives improvements. Our history in scale-up work has shaped practical habits: verify critical points, document aggressively, and never assume yesterday’s success guarantees today’s result.

    Comparing with Other Products

    We manufacture additional muscle relaxants and related intermediates—Baclofen, Methocarbamol, and Tolperisone pass through adjacent lines sometimes. Each substance carries its own quirks. Baclofen, for instance, handles easily but requires different solvent systems. Tolperisone synthesis responds poorly to temperature dips, where Tizanidine’s stability window is a little wider. These close comparisons, drawn from years of parallel runs, help us refine methods. We resist shifting platforms between unrelated products, as mixing equipment or staff between drug classes introduces cross-contamination risks and traceability headaches.

    Environmental and Safety Practices

    Working with active pharmaceutical ingredients demands a grounded safety culture. Our crews wear full PPE, and air handling units filter dust and extract solvent vapors. Spill control protocols aren’t optional, because minor lapses invite both product loss and personnel danger. Over time, we’ve invested in solvent recovery systems—recovering and purifying used solvents both saves costs and reduces waste streams. We meet local and national regulatory requirements, but our experience says that keeping operators healthy and focused always pays off. Training refreshers happen each quarter, and process modifications receive careful review before implementation.

    Supply Chain Resilience and Customer Support

    Direct manufacturing means we carry supply chain responsibilities past our own gate. Clients ran into supply problems during global transport disruptions. We learned from those events and now forecast raw material needs several quarters ahead, diversifying suppliers for our starting materials when possible. If shipping lanes shift or container shortages pop up, early warnings inside our chain let us buffer inventory accordingly. We also keep a reserved stock for key accounts who build our Tizanidine into their finished goods pipelines. This tight working relationship avoids the anxiety seen with distributor-driven “just in time” resupply.

    Client Feedback: Building Products that Meet Real Needs

    Unlike distant resellers who relay feedback in email chains, our technical managers handle inquiries directly. This gives us a clear sense of where our products work—and where they don’t. Some customers have pushed for extra analytical data, such as specific chiral purity or extended stability reports. We respond with full disclosure, including raw instrument files if needed. Other times, unusual physical handling requirements force us to rework packaging or formulation. A client running a pilot production line started seeing static cling issues with dried Tizanidine; we tweaked our drying profile on the fly, documented the changes, and adjusted process sheets moving forward. These everyday problem-solving sessions shape the way our operation develops.

    Regulatory Alignment and Compliance

    Complying with regulatory demands isn’t just about paperwork. We interpret regulatory shifts as signals to upgrade documentation systems, batch records, or analytical libraries. Inspections by health authorities focus on traceability, and our integrated records provide a seamless paper trail from batch raw material to export shipment. Our regulatory team stays updated on evolving standards in target markets, so our certificates align with local expectations. This alignment saves our customers time—and, as many have told us, offers peace of mind compared to distant or non-transparent supply chains.

    Shared Learning Across Applications

    Our customer base ranges from small research outfits to large-volume formulation shops. This diversity brings practical knowledge: some labs push for early-stage material with looser specs for synthesis work, while others press for pharmaceutical-grade batches with extended impurity screening. We reflect those requests in our production planning and process validation. Every request pushes us to refine something—be it a test method, a packaging tweak, or environmental controls on the production floor. Decades of operation have shown that “just good enough” never lasts long; the market rewards attention to both detail and service.

    Raw Material Sourcing: Why It Matters

    Tizanidine synthesis depends on critical starting substances—each source shows variability in both quality and consistency. Sourcing directly from certified and audited suppliers matters for predictable outcomes. Over time, we’ve built relationships with key suppliers, investing in site audits and periodic lab checks. Lower-grade alternatives routinely show up on the market, but using them risks introducing unwanted process contaminants. We’ve collected enough out-of-spec samples from third-party traders to spot these risks early. Our approach stays practical: verify suppliers, test incoming lots, and reject anything that falls short. These habits reduce waste during production and keep downstream users protected.

    Problem Solving: Everyday Manufacturing Surprises

    On the shop floor, no two weeks play out the same. A power fluctuation can throw off reactor timing; a shift in raw material moisture changes reaction rates without warning. Our operations teams meet daily, reviewing logs and tracking each batch. If we see drifting assay or particle properties, we pause and troubleshoot—sometimes reworking, sometimes scrapping a batch to prevent future issues. Many of the best improvements come straight from operators who see problems up close each day. Their input feeds directly into our annual process reviews, catching issues before they escalate or repeat.

    Long-Term Perspective: Stability and Shelf Life

    Tizanidine holds up well in standard storage when kept dry and protected from light. We confirm shelf life for every batch, regularly pulling retention samples and running stability tests far past minimum regulatory requirements. An expired batch means lost value and extra work, so we work to ensure only freshly tested goods ship out. We keep detailed sample histories, so if a client requests stability trends, we can provide month-by-month breakdowns. Older reports have taught us which packaging formats hold up and which let in slow leaks or humidity creep. These results translate into direct improvements, like shifting to upgraded liner materials as soon as issues arise.

    Packaging Innovation: Beyond Standard Bulk

    Transport resilience counts for a lot. Years ago, we used generic bulk sacks and basic liners; now, customer claims about broken seals, split linings, or shipment exposure motivated us to upgrade. Today, we seal each batch in specialized barrier films, using moisture scavengers and tamper-evident closures. This shift didn’t come from market trends, but from tracking damaged goods and acting directly. Downstream, clients notice fewer dissolution or flowability problems—small changes on our side translate into fewer formulation challenges for theirs. We maintain ongoing reviews, looking for better ways to ship both kilogram-scale and larger industrial orders.

    Process Improvements and Analytical Evolution

    Not all advances are dramatic. Behind the scenes, we’ve improved filtration steps, changed drying cycle times, and updated HPLC methods for impurity quantification. A recent shift to more sensitive columns uncovered trace impurities unseen by older instruments—feedback from this data lets us modify both reaction and workup stages. We view analytical upgrades as investments, not costs; early detection of outliers avoids reputational damage and regulatory risk. On the production side, minor changes—like recalibrating mixers or adjusting solvent flow rates—have saved more material than larger equipment purchases ever did.

    Traceability: Keeping Supply Chains Accountable

    We trace every batch, from raw material intake through finished packaging. Maintaining this continuity isn’t about checking a box; it’s the backbone of defensible quality. On site, all operators sign batch records and analytical logs, making it clear who worked on what stage. If a downstream partner ever encounters a problem, full origin details avoid finger-pointing and speed up resolution. This practice also keeps our own vendors in line; if an analytical outlier comes up, we trace back to the incoming lot and push for improvement. While this level of detail takes effort, it sets us apart from hands-off supply models.

    Listening: Voice of the Customer

    Every client, whether a national company or an academic researcher, feeds ideas back into our plant. Some push for smaller, custom-packed lots; others want regular re-validation of impurity tests or direct confirmation of stability claims. We approach these requests as opportunities rather than burdens, using them to refine everything from paperwork to process settings. Our experience says that technical customers expect more than a catalog product—they rely on consistent, responsive support. Fostering this feedback culture demands flexibility and humility, but the reward is growth in both capability and reputation.

    Building Better Tizanidine for Real-World Demands

    Drawing from years of hands-on manufacturing, we’ve built up Tizanidine production as a practical, resilient operation—one that answers real market needs rather than just theoretical standards. Direct control of every step, transparent records, and open technical support mean less guesswork and fewer surprises for our partners. Clients benefit from clean traceability, prompt documentation, and stable supply built for the long haul—not just short-term transactions. Over time, we’ve learned that open doors, practical shop-floor improvements, and clear accountability do more to ensure product quality than slogans or distant badge claims ever could.