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Flunarizine Dihydrochloride

    • Product Name Flunarizine Dihydrochloride
    • Alias Sibelium
    • Einecs NA
    • 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

    697840

    Generic Name Flunarizine Dihydrochloride
    Chemical Formula C26H28F2N2·2HCl
    Molecular Weight 482.44 g/mol
    Appearance White to off-white crystalline powder
    Solubility Soluble in water and ethanol
    Therapeutic Class Calcium channel blocker
    Indications Migraine prophylaxis, vertigo, vestibular disorders
    Route Of Administration Oral
    Storage Temperature Store below 25°C
    Cas Number 52468-60-7

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

    Packing & Storage
    Packing Flunarizine Dihydrochloride, 10g, is packaged in a sealed amber glass bottle with a secure screw cap, labeled with safety instructions.
    Shipping **Flunarizine Dihydrochloride** is shipped in tightly sealed containers, protected from light and moisture. It is handled as a non-hazardous material under ambient conditions unless otherwise specified. All shipments comply with relevant regulations to ensure safe, secure delivery, and come with appropriate documentation and labeling for laboratory or research purposes.
    Storage Flunarizine Dihydrochloride should be stored in a tightly sealed container, protected from light, moisture, and incompatible substances. It is recommended to keep it at room temperature, typically between 20°C to 25°C (68°F to 77°F). The storage area should be dry, well-ventilated, and away from sources of heat or ignition to maintain the chemical's stability and potency.
    Application of Flunarizine Dihydrochloride

    Applications of Flunarizine Dihydrochloride in Industrial Manufacturing

    Our production of Flunarizine Dihydrochloride supports multiple advanced pharmaceutical manufacturing segments, ensuring precise integration into downstream formulations. Our dedicated focus remains on consistent quality, reliable supply, and alignment with real-world industrial application requirements.

    1. Pharmaceutical Finished Dosage Form Manufacturing

    We deliver Flunarizine Dihydrochloride as an active pharmaceutical ingredient (API) primarily for the production of oral migraine prophylactic drugs. Pharmaceutical manufacturers incorporate this compound during the blending process to achieve targeted pharmacological profiles in compliant finished tablets and capsules. Dosage uniformity, particle size, and purity play critical roles throughout quality-controlled processing lines, primarily under GMP-regulated environments serving specialist neurology markets. Our API supports industrial-scale batch production via validated protocols that ensure consistent dispersion and stability within excipient matrices.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia (Ph. Eur.) monographs for APIs
    • United States Pharmacopeia (USP) requirements for Flunarizine
    • WHO Prequalification Programme for finished dosage form manufacturers

    Typical usage ratio

    • Industrial batch formulations use Flunarizine Dihydrochloride at 5–10 mg per tablet or capsule, adjusted based on target release profile and therapeutic regulatory submission; API typically forms 1–10% w/w of the total blend, depending on excipients and dosage strength.

    Downstream process integration

    • API enters during blending/granulation after initial sifting, followed by compression into core tablets or encapsulation. Producers monitor uniformity and loss-on-drying for every manufactured lot.

    Final product types

    • Oral solid tablets for migraine prevention
    • Hard gelatine capsules for neurological indications
    • Blister-packed retail tablet units for pharmaceutical distribution

    2. Contract Manufacturing of Generic Neurology Drug Products

    Outsourced contract development and manufacturing organizations (CDMOs) source Flunarizine Dihydrochloride from us to produce generic versions of original neurology products after patent expiry. These bulk purchasers require batch-consistent, traceable lots suitable for direct integration in their validated oral solid dose manufacturing platforms. Regulatory inspection and strict change control measures define this sector, with emphasis on meeting multinational marketing authorization approvals across regulated regions.

    Industry compliance standards

    • US FDA cGMP (21 CFR Parts 210 and 211)
    • EU EudraLex: Volume 4 — GMP Guidelines for Medicinal Products
    • ANVISA (Brazil) and PMDA (Japan) international GMP requirements
    • ISO 9001:2015 Quality Management Systems for pharmaceutical suppliers

    Typical usage ratio

    • Contract manufacturers set the API-to-excipient ratio to support standard marketed dosing; typically, 10-30 kg API per 1 million tablet batch, with the ratio refined according to market-specific bioequivalence submissions.

    Downstream process integration

    • API received as double-polybagged bulk drums for direct weighing and blending, proceeding through wet or dry granulation lines before tablet pressing and film-coating workshops. CDMOs track source lot numbers through every manufacturing step for regulatory audits.

    Final product types

    • Generic Flunarizine 5 mg and 10 mg tablet brands
    • Market-ready tablet bottles and blisters for contract clients
    • Multi-language carton-packed finished products for parallel export and market launches

    3. Research and Development for Neurological Drug Formulation

    R&D divisions of pharmaceutical enterprises order Flunarizine Dihydrochloride for both pilot-scale studies and early-stage clinical supply manufacture. This segment prioritizes small-batch but highly controlled synthesis and analysis steps, with material undergoing preformulation testing for polymorphism, compatibility, and stability. Downstream, scientists tune dosage forms to model release rates and improve patient adherence, often preparing clinical trial materials for phase I–III studies.

    Industry compliance standards

    • Good Laboratory Practice (GLP) for preclinical studies
    • ICH Q11 Development and Manufacture of Drug Substances
    • ICH Q2(R1) Validation of Analytical Procedures
    • Clinical trial supply chain protocols (GMP for Investigational Medicinal Products)

    Typical usage ratio

    • R&D units use 0.5 g to 10 g per prototype formulation batch, typically at 0.5–3% w/w for formulating clinical trial samples, with ratios iteratively optimized for dissolution, taste-masking, and bioavailability targets.

    Downstream process integration

    • Lab-scale blending, experimental granulation, direct-to-tablet compression, or microencapsulation for pharmacokinetic evaluation; R&D tracks every formulation for intellectual property and process transfer records.

    Final product types

    • Clinical trial tablets for human pharmacokinetics/dynamics
    • Experimental immediate/extended-release oral dosage prototypes
    • Analytical reference standards for internal QC and method development

    4. Veterinary Pharmaceuticals Manufacturing

    Global veterinary pharmaceutical manufacturers incorporate Flunarizine Dihydrochloride as an adjunct therapeutic agent in specialized animal neurological products, particularly for companion animals. These niche producers require strictly controlled quality, non-cross-contaminated material to comply with veterinary-specific Good Manufacturing Practice and regional animal drug registration frameworks. Dosing criteria differ from human formulations, and veterinary adaptation trends often require smaller production runs with detailed lot traceability.

    Industry compliance standards

    • VICH GL9 Good Manufacturing Practices (GMP) for Veterinary Medicinal Products
    • EMA CVMP Guidelines for Active Substances in Animal Products
    • National animal drug registration systems (e.g., USDA Center for Veterinary Biologics, China MARA)
    • ISO 22442 for medical substances of animal origin

    Typical usage ratio

    • Typical veterinary oral formulations use 2.5–10 mg per unit dose, often diluted to <1% w/w given animal body mass adjustment; formulating veterinarians adjust dosing based on species and indication.

    Downstream process integration

    • Material is introduced during small-batch blending for medicated feed premixes, direct tableting, or compounded suspension production tailored to animal administration and palatability testing.

    Final product types

    • Oral tablets for companion animal neurology
    • Powdered feed premixes for specialized veterinary use
    • Veterinary sachets or oral suspensions packed for clinical prescription
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    Certification & Compliance
    More Introduction

    Introducing Flunarizine Dihydrochloride: A Vital Product Born From Decades of Substance Expertise

    Shaping Our Approach Through Real-World Manufacturing Experience

    Focusing on the practical requirements of technicians, formulation chemists, and production supervisors, flunarizine dihydrochloride represents much more than another raw material on a shelf. Our team in the plant, through years of refining active pharmaceutical ingredient (API) synthesis, views each lot of flunarizine dihydrochloride as the result of close handling, precise process control, and ongoing quality checks backed by human intuition as much as analytical equipment. We stand behind the fact that small deviations in reactant conditions or subtle impurities can dictate the outcome of a batch. That knowledge shapes every update to our methods, and we oversee every step to guarantee that what ends up in the drum or bottle meets both our standards and the needs of end users.

    Only by working directly with the synthesis, not simply repackaging or reselling from elsewhere, do we gain the perspective to identify where particular characteristics and fine tolerances truly make a difference. Every improvement, whether in filtration, crystallization, or the humidity during packaging, brings an outcome felt in the next laboratory or formulation line. Our lab conversations bridge the gap—not just asking what’s needed in theory, but what will solve a concrete problem at the bench.

    Understanding Flunarizine Dihydrochloride: Its Place and Purpose

    Flunarizine dihydrochloride has long served as a selective calcium entry blocker, a role well established in clinical migraine prophylaxis and management of certain vestibular disorders. Working with this compound, we witness a demand that involves both scientific innovation and regulatory expectations. Pharmacological research values consistent particle size and purity, since even marginal off-specification can throw off downstream formulation and stability. Our production lines run with strict oversight to yield flunarizine dihydrochloride meeting key thresholds—most crucially, regarding chemical purity, moisture content, and polymorphic consistency. Without these controls, process variability creates headaches and troubleshooting down the supply chain.

    Our teams routinely consult with partners in QC and R&D, sharing spectroscopy data and batch records, so we don’t leave surprises for scientists later down the pipeline. That openness, and our proximity to actual manufacturing, puts our staff in a position to tweak operating conditions and to document every deviation. It is rare for a project to avoid every challenge, but years of batch history and real evidence allow us to respond without delay if an outlier appears.

    Model, Specifications, and Batch Consistency

    Each batch of flunarizine dihydrochloride receives direct attention from both manufacturing staff and quality assurance experts. Typical output specifications align with high API-grade benchmarks: assay by HPLC not less than 99.0%, water content below stringent thresholds, and finely controlled particle size distribution. These metrics do not appear from thin air. Technicians monitor solvents and temperature during each stage, and every small change—down to drying time or granulation method—can leave an imprint on the outcome. When there is a shift, even a fractional rise in impurity or trace residual solvents, our internal systems flag it for follow-up. The result: batches that do not simply meet a printed range, but follow a fingerprinted consistency that only experience-driven control can achieve.

    Some formulation customers, especially those producing oral dosage forms, often voice concern over polymorphic variation. Our response has been to tune both crystallization temperature profiles and solvent filtration routines. Only through understanding the behavior of the API in both laboratory and scaled manufacture have we found the recipes that lock in the preferred polymorph. This reduces rework and minimizes lot-to-lot variability for our downstream partners.

    We always consider the feedback from API purchasers and manufacturing teams who see changes in powder flow, color, or micronization. Our site implements batch-specific reports and retains samples for years, so any question about a prior delivery can be backed up with data—rather than apologies.

    End Uses and Formulation Notes: Drawing the Line Between Lab and Line

    Flunarizine dihydrochloride finds critical use in pharmaceutical products developed for central nervous system therapeutic areas, particularly for the prevention of migraines. Formulators working on solid dose forms—tablets, capsules, or granules—count on this API to deliver not only therapeutic effect, but also ease of processing. Particle size, moisture content, and stability all feed into practical decisions about how to blend, compress, or coat final dosage forms. Years of production have revealed exactly where differences in supplier material translate into smoother operations or, conversely, persistent headaches at the tableting press.

    Having direct lines of communication with end users allows us to adapt process parameters when reports of unexpected challenges—such as capping, lamination, or dissolution lag—surface in formulation runs. Process modifications in our plant, such as finer micronization, moisture reduction, or extended sieving, often start from such frontline reports. These adjustments, though they may seem slight, improve downstream yields and time-to-market for our partners.

    For injectable development, strict attention to residual solvents and bacterial endotoxin load comes to the forefront. We never take shortcuts, as a trace contaminant or slow-release impurity turns into significant regulatory and clinical risk. Often, we field onsite audits by pharmaceutical clients, showing in detail the extra steps we have instituted to preempt these problems. No distributor or trader has that level of transparency, since they never walk the shop floor.

    One thing frequently observed in collaboration: while most users start with standard specification sheets provided by reference compendia, those numbers tell only half the story. The reality of full-scale pharmaceutical manufacture requires a product that not only fits written standards but also behaves predictably in blended and compressed forms. Years of dialogue and formulation troubleshooting with development pharmacists inform both our quality design and our continuous improvement measures.

    What Sets Our Flunarizine Dihydrochloride Apart

    Manufacturers sometimes mention the same basic points—meeting pharmacopeia standards and batch-to-batch reproducibility—but lived experience in the plant shows the importance of differences that look minor in a spreadsheet. Every operator on our team knows that a slight shift in particle morphology or an uptick in moisture could cause hours of lost production time, upwards of tens of thousands in wasted excipients, and deep regulatory headaches if not caught promptly. We maintain constant calibration of monitoring equipment and double-check batch records precisely for this reason.

    By producing our own material and retaining full control over synthesis and finishing, instead of simply buying from an external vendor, we adjust and improve in response to client experience. This level of control becomes crucial for specialty markets or clinical trial manufacturing, where small lots and unique requirements matter as much as the larger scale commercial runs. Unlike bulk traders, we thrive on close technical collaboration. If a client reports trouble with tableting or notices shifts in impurity profiles, our technical teams initiate root cause analysis supported by retained batch samples and manufacturing logs.

    Modern analytical laboratories—ours included—employ a suite of advanced testing including LC-MS, NMR, and even solid-state analysis to verify critical quality attributes beyond the limited requirements published in national pharmacopeia. Our in-plant inspectors don't hesitate to flag concerns outside the written spec, as their reputation depends on supporting reliable end-user results, not just clearing a regulatory bar. Over the years, this self-imposed scrutiny has led to refinements including improved crystallization, more efficient drying, and measures to block batch cross-contamination.

    Working directly at the source provides better access to trend analysis. Our internal digital record system allows review of years of production, highlighting even gradual shifts in process performance. Such attention to long-term trend management gives us the edge in managing process drift, minimizing unanticipated out-of-spec situations, and supporting the zero-defect philosophy valued by stringent pharmaceutical partners.

    Meeting Quality Challenges Head-On—Not Just Through Paperwork

    Many customers seeking assurance of product quality rely on certificates of analysis and regulatory documents. While these are fundamental, our experience shows that quality problems almost always reveal themselves first in the plant—not in documentation. Pressure swings, temporary power loss, or even fluctuations in solvent supply teach us to create redundant controls on top of regulatory requirements. Over our years manufacturing flunarizine dihydrochloride, we've learned to anticipate laboratory needs before samples are ever shipped.

    During the COVID pandemic, for instance, global logistics disruption led to erratic supply for crucial chemical precursors. Direct manufacturing experience allowed us to validate alternative sourcing and altered process windows quickly, maintaining consistent output without sacrificing compliance or final quality. We acted decisively because our teams already handled every critical variable themselves—we didn’t depend on a shifting landscape of third-party suppliers or intermediaries with limited process visibility.

    One frequently misunderstood area is stability under varied storage conditions. Our in-house long-term stability studies extend across typical ranges—variable temperature, high humidity, and exposure to light—ensuring that flunarizine dihydrochloride remains within specification beyond the minimum shelf life. Formulators and packaging engineers use this information to drive decisions on lot acceptance and packaging changes. This kind of data comes only from a genuine manufacturer, not from entities simply passing on someone else’s report.

    Collaboration: How Manufacturer-Partner Relationships Drive Better Outcomes

    Working directly with pharmaceutical development teams brings a constant flow of feedback that would never appear on a distributor’s order form. We invest in ongoing training for production and QC staff—so they not only meet the required tests but also anticipate likely points of weakness for typical applications. In several cases, proactive material modification, based on repeated customer reports, helped reduce production downtimes and improve process predictability.

    PR&D teams at formulation companies sometimes require minor batch customization: higher purity for preclinical research, tighter moisture targets for hygroscopic ingredient blends, or pre-milled material for high-shear granulation. Because we understand our own equipment and chemistry from the ground up, making such adjustments is practical and reliable. We trace every change directly back to the plant, keeping documentation both for regulatory compliance and client assurance.

    Some large bulk buyers indicate primary concern about cost per kilo, but our best partnerships develop where both parties care about quality measured not only in terms of acceptance rates, but also by headache-free downstream production. These relationships have resulted in collaborations that, over time, bring valuable process insights to both sides, enabling shared growth rather than mere transactional sales.

    Addressing Production and Regulatory Challenges: Lessons Learned

    Strict adherence to evolving regulatory frameworks has kept us vigilant not just for internal compliance, but for supporting clients through their own audits and regulatory submissions. With tightening global standards, our staff undergoes recurrent training on good manufacturing practice and data integrity. Contamination control, cross-batch validation, and meticulous batch record keeping serve as the backbone for defensible quality assurance.

    In many instances, increased pharmacopoeial scrutiny or changes in impurity profile requirements have demanded process retrofit. Our in-house R&D team, working alongside manufacturing engineers, trial new methods that boost both production reliability and safety, such as greener solvent systems or safer reaction controls. These trials start small, with dedicated pilot lines, then scale only after rigorous verification. This pace avoids risk, ensuring that the material supplied for pharmaceutical development remains a trusted, stable base for global drug makers.

    Data-driven alarm management flags even subtle deviations—process drift, changing raw input quality, or mechanical degradation. Instead of waiting for a failure, our teams investigate alerts immediately. Over years of operation, this vigilance enables rapid corrective action, increasing on-time batch delivery and reducing downtime.

    Supporting a Broader Mission: Ensuring Safe, Reliable, and Accessible Treatments

    The impact of our work stretches beyond the gates of our manufacturing facility. Every high-quality batch of flunarizine dihydrochloride supports a global network of pharmaceutical formulators and, by extension, end users seeking better health outcomes. By keeping costs stable through efficient batch processing and rigorous maintenance of critical equipment, we enable sustainable access to this important medication. Every improvement—be it incremental or transformative—ripples out into broader access and improved treatment comfort for patients.

    A strong supply begins not with broad marketing, but with real accountability and consistency from the source. This business is not simply about matching a chemical name to a template specification, but about delivering substance, accountability, and human attention. Long-term reliability takes on heightened importance for supply chains involved in migraine and vestibular disorder therapies, where sudden supply interruption harms not just companies, but individuals depending on routine treatment.

    Our facility recognizes its role bridging scientific rigor and practical output. Every batch sends a message—one of confidence—to our partners, who expect both high standards and the willingness to adapt those standards for tomorrow’s demands. We measure our success through feedback from users, consistent product performance, and the ability to accommodate both routine needs and one-off requirements.

    Concluding View: Why Source Directly From The Manufacturer

    Working from the ground up, in daily contact with materials and machinery, gives insight unavailable to those who simply broker or trade from afar. The difference rests in direct control over every variable—sourcing, synthesis, filtration, drying, milling, and final packaging. With flunarizine dihydrochloride, narrow tolerances matter; small errors create cascading problems for pharmaceutical producers and, ultimately, affect the quality and reliability of released medications.

    Rather than relying on standardized brochure language or generic statements, we choose to reflect the intricacies and lessons of the factory floor. Every improvement in process or QC brings the end user closer to a product that delivers not only the pharmacological benefit desired, but also the consistency demanded by regulators and patients alike. The next time someone opens a drum or vial of our flunarizine dihydrochloride, they tap into a supply chain defined by careful human oversight, technical skill, and the ongoing drive for better results—from process chemistry through to final therapy.