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Orphenadrine Citrate

    • Product Name Orphenadrine Citrate
    • Alias Norflex
    • Einecs 223-668-7
    • 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

    799992

    Generic Name Orphenadrine Citrate
    Brand Names Norflex, Disipal, others
    Drug Class Skeletal muscle relaxant
    Chemical Formula C18H23NO•C6H8O7
    Route Of Administration Oral, Intramuscular, Intravenous
    Mechanism Of Action Central anticholinergic and analgesic effects
    Indications Muscle spasms, musculoskeletal pain
    Contraindications Glaucoma, urinary retention, myasthenia gravis
    Common Side Effects Dry mouth, dizziness, blurred vision, nausea
    Pregnancy Category Category C (US FDA)
    Half Life 14 hours
    Controlled Substance No
    Storage Conditions Store at room temperature, away from moisture and light

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

    Packing & Storage
    Packing A white and blue labeled bottle containing Orphenadrine Citrate tablets, 100-count, with dosage and caution information clearly printed.
    Shipping Orphenadrine Citrate is securely packaged in sealed, compliant containers to prevent contamination and moisture exposure. It is shipped under standard conditions, avoiding extreme temperatures. Documentation includes safety data sheets and labeling in accordance with regulatory guidelines. Delivery is tracked, ensuring prompt and safe arrival for laboratory or pharmaceutical use.
    Storage Orphenadrine Citrate should be stored at room temperature, typically between 20°C to 25°C (68°F to 77°F). Protect it from light, moisture, and excessive heat. Keep the container tightly closed and store in a dry place. Ensure the chemical is kept out of reach of children and unauthorized personnel. Dispose of in accordance with local regulations.
    Application of Orphenadrine Citrate

    Applications of Orphenadrine Citrate in Industrial Manufacturing

    Orphenadrine citrate is a specialized active pharmaceutical ingredient used primarily in the pharmaceutical sector for production of muscle relaxant preparations and certain pain management formulations. As an API producer with audited facilities, we supply this material to regulated downstream manufacturing environments demanding precise control of quality and traceability.

    1. Prescription Muscle Relaxant Tablet Production

    Orphenadrine citrate is a core component in the manufacturing process for muscle relaxant tablets targeting skeletal muscle pain and spasm, particularly in combination therapies with other analgesics. Licensed drug manufacturers purchase the API to formulate finished dose tablets through direct blending, granulation, and tableting. The process requires careful adjustment of excipient ratios and adherence to high-purity standards, as the API’s physical properties impact flow, compressibility, and stability during production. Each batch undergoes strict release testing, and all stages are aligned with pharmacopeial and regulatory demands specific to this class of medication.

    Industry compliance standards

    • USP (United States Pharmacopeia) Monograph for Orphenadrine Citrate
    • European Pharmacopoeia (Ph. Eur.) specifications
    • Good Manufacturing Practices (GMP – ICH Q7)
    • FDA 21 CFR Part 211 for finished pharmaceuticals

    Typical usage ratio

    • Each tablet commonly contains 100 mg of orphenadrine citrate, with dosage strengths adjusted between 50 mg and 100 mg per unit based on prescription product registration.
    • API to excipient ratio typically ranges from 10% – 25% by weight, varying according to tablet format (film-coated/uncoated, scored/non-scored).

    Downstream process integration

    • Integrated during blending step prior to wet granulation.
    • Dispensing and weighing under controlled humidity and temperature conditions to prevent degradation.
    • Tableting machines calibrated for consistent weight and hardening.
    • Release testing for uniformity, dissolution, and API assay post-compression.

    Final product types

    • Prescription muscle relaxant oral tablets for hospital and pharmacy channels
    • Combination tablets with analgesic APIs (e.g., aspirin, paracetamol)
    • Hospital blister packs

    2. Injectable Solution Formulation for Hospital Use

    Orphenadrine citrate is processed into sterile solution injectables for acute muscle pain or post-operative muscle spasticity management. Downstream manufacturers use aseptic compounding and terminal sterilization with tight control of pH and isotonicity. The manufacturing environment must maintain cleanliness and prevent endotoxin contamination. Validation of fill volume, sterility, and content uniformity is critical, especially for ampoule or vial presentations distributed to healthcare institutions.

    Industry compliance standards

    • USP/EP requirements for injectable APIs
    • GMP (PIC/S, ICH Q7, EU GMP Annex 1 for sterile manufacturing)
    • FDA 21 CFR Parts 210, 211, and 610
    • EMA Guideline on Sterile Product Manufacture (EudraLex, Volume 4)

    Typical usage ratio

    • Finished ampoules typically contain 30 mg/ml or 60 mg/2 ml solution, depending on hospital formularies.
    • Typical batch-scale: Target API accounts for 3–8% of total solution weight (w/v), adjusted for tonicity and buffer.

    Downstream process integration

    • API dissolved and filtered into compounding vessels with carrier solvents and stabilizers.
    • Sterilization by filtration immediately prior to vial or ampoule filling.
    • Terminal sterilization (autoclaving) post-filling for thermal stability lots.
    • In-process controls for particulates, pH, sterility, and pyrogen content.

    Final product types

    • Sterile injectable ampoules (for IV/IM administration)
    • Multi-dose hospital vials
    • Pre-filled disposable syringes (special licensing markets)

    3. Transdermal Patch Manufacturing (Experimental/Clinical Supply)

    R&D divisions at pharmaceutical companies have explored orphenadrine citrate for transdermal patch prototypes targeting chronic pain and musculoskeletal disorders. Integration into pressure-sensitive adhesive matrices requires solubilization and compatibility screening. The compound’s diffusion properties and chemical stability influence release profile design. Pilot-scale batches rely on multilayer lamination and cutting under GMP-pilot standards, mainly for clinical study material supply.

    Industry compliance standards

    • FDA Guidance for Industry: Transdermal and Topical Delivery Systems Pharmaceutical Quality/CMC
    • ICH Q8-Q10 for development, analytical, and quality assurance
    • USP <1663> and <1664> for extractables/leachables in container-closure systems
    • GMP for investigational medicinal products (IMP) – EU Annex 13

    Typical usage ratio

    • Formulated loading between 18 mg and 120 mg per patch, adjusted to deliver 5–10 mg/hr over 8 to 24 hours based on permeation studies.
    • Patch matrix contains 1%–4% active by weight; final ratio based on target release rate, adhesive properties, and stability shelf-life.

    Downstream process integration

    • Dissolved or dispersed in adhesive polymer bulk compound.
    • Cast onto release liner, dried under moderate temperatures to remove solvents.
    • Finished lamination with occlusive backing material.
    • Punched, cut, and packed in sterile blisters or foil pouches.

    Final product types

    • Transdermal patches for Phase I–III clinical trials
    • Experimental pain management patch systems
    • Clinical supply packs for investigator-led studies

    4. Compounded Oral Suspension Production in Hospital Pharmacies

    Specialized hospital pharmacy compounding units prepare orphenadrine citrate oral suspensions for pediatric, geriatric, or dysphagic patient populations. The API integrates into aqueous vehicles via in-house formulation or via pre-prepared compounding kits. Suspension stability depends on particle size control, proper suspending agents, and batchwise pH titration. These preparations comply with prescription and patient-specific requirements, offering flexible dosing and individualized treatment.

    Industry compliance standards

    • USP <795> Pharmaceutical Compounding – Nonsterile Preparations
    • Local regulatory compounding guidelines (e.g., US State Boards of Pharmacy, EU hospital pharmacy best practices)
    • ASHP Guidelines on Compounding Sterile Preparations
    • Internal hospital QA systems

    Typical usage ratio

    • Concentration customized per prescription, commonly from 5 mg/ml to 20 mg/ml suspension.
    • Active percentage in bulk suspension typically 0.5%–2%, tailored to individual patient dosing protocols.

    Downstream process integration

    • API carefully weighed and triturated to fine powder in clean rooms.
    • Wet-mixed with flavoring, sweetening agents, and suspending vehicles in sanitary vessels.
    • Portion-controlled aliquots dispensed into amber bottles.
    • Labeling and QA verification for each patient prescription lot.

    Final product types

    • Patient-specific oral suspensions for hospital use
    • Pediatric oral liquid medications
    • Custom geriatric-dosed bottles for nursing care facilities
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    Certification & Compliance
    More Introduction

    Orphenadrine Citrate: Proven Quality Built on Manufacturing Experience

    Bringing Our Laboratory to Your Production Line

    As long-established manufacturers of active pharmaceutical ingredients, we approach each batch of Orphenadrine Citrate with one goal in mind: consistency our partners can rely on. Lab results can look perfect on paper, but it's the real-life stability and purity on a large scale that carries weight for formulators and patients alike. We have spent years refining our production lines, tuning crystallization steps, filtration, and drying, to produce Orphenadrine Citrate that keeps particulate size within a tight, predictable range. Our technical teams constantly monitor trace level impurities as small deviations affect both downstream process behavior and regulatory documentation.

    Orphenadrine Citrate, with the molecular formula C24H28N2O4, appears as a white to almost white crystalline powder. From a technical standpoint, this material offers reliable solubility in water, fitting well into both oral and injectable pharmaceutical formulations. Chemists who value efficient mixing and quick solution preparation will notice the ease with which our product disperses, which saves steps at scale and contributes to better batch outcomes. Maintaining ascorbate, chloride, and other specific impurities far below published pharmacopeial limits remains a point of pride for our verification lab. HPLC chromatograms from real production runs demonstrate low baseline noise and sharp target peaks, reflecting a mature purification process.

    Clean Inputs, Robust Controls, Transparent Records

    Raw material selection means everything for compounds like Orphenadrine Citrate. Over the years, we have established stable partnerships with raw material suppliers whose molecules perform well under scrutiny — not just at the start of a project, but over repeated lots. That reduces the risk of supply chain turbulence affecting your product. Robustness in synthesis is key to keeping lot-to-lot reproducibility within established specifications. Our process engineers regularly audit internal records, and you'll find batch documentation for every drum shipped. As a finished API, Orphenadrine Citrate from our lines achieves typical purities above 99.5%, verified by independent third-party laboratories. Moisture content, relevant to both cGMP and ICH guidelines, consistently tests below the tightest thresholds.

    We pay close attention to potential cross-contamination. Physical plant design prevents exposure to other substances. Sampling, weighing, and packaging take place in controlled environments, supported by validated cleaning protocols. Internal staff complete recordable training cycles to maintain awareness of both the chemistry and quality expectations.

    Key Differences in Practical Application

    Many generic products share a common name, but processing differences show up in the end result. Users who have switched to our Orphenadrine Citrate often appreciate the reduced caking during storage and improved flow characteristics during blending. These properties aren't the result of luck; they follow years of monitoring, tweaking, and adapting procedures to suit commercial-scale reactors and dryers. In downstream formulation, customers see less sticking to steel surfaces and more uniform powder distribution, especially in high-speed tablet press machinery. For those working with solution-based products, improved wetting and a lack of visible sediment simplifies handling and minimizes hold-ups during transfer.

    We compare closely with other models and grades available around the world. Some products hold higher water or solvent residues, showing up in higher loss-on-drying values. Others may show wider variation in sodium or potassium content, hinting at less controlled synthesis. By focusing our own manufacturing lines on reproducible, well-characterized chemical routes, we've built trust with pharmaceutical developers aiming for rapid batch release and fewer regulatory surprises.

    Backed by Reliable Documentation and Compliance

    Our regulatory documentation covers all the essentials: valid Certificates of Analysis for each lot, supported by detailed chromatograms, full impurity profiles, and batch-specific stability data. We maintain full traceability from raw input to finished drum, compliant with major United States, European, and Asian pharmacopoeia standards. For partners operating with strict local rules or seeking US FDA or EMA registration, our data package covers Investigator Brochure, Drug Master File, and Change Control tracking.

    Shelf-life standards matter to us just as much as to you. Accelerated and real-time stability trial results are routinely updated, not left as static claims. Past experience with long-term storage and transit stresses has encouraged us to invest in double-lined HDPE drums, tamper-evident seals, and desiccant management, all to extend storage windows and minimize disruption from warehouse delays. This reduces your QA costs and helps your planning team work more predictably.

    The Value of Industry Experience

    Orphenadrine Citrate has gained use for years in muscle relaxation applications, most notably in oral and injectable pain management therapies. Through regulatory changes, market disruptions, and shifting drug master file requirements, we have maintained production and adapted specifications to stay aligned with regulatory science. Management has learned, sometimes the hard way, that small shifts in crystal habit or residual solvent content cause downstream challenges with dissolution, uniformity, or regulatory flags. Our continuous process evaluation, feedback from formulation scientists, and routine stress testing have improved not just yield, but also customer satisfaction.

    This ingredient stands apart from other related API material. For example, compared with Orphenadrine Hydrochloride, Orphenadrine Citrate carries a different hydrate profile and solubility curve. Our product demonstrates a less hygroscopic nature and greater stability in finished dosage storage, which can lead to longer shelf life and fewer out-of-spec batches during routine quality inspections. Technicians on tablet lines or solution mix tanks typically notice less dusting and finer particulate control, which reduces cleanup and maintenance time after runs.

    Supporting Large and Small-Scale Manufacturers

    Whether you run high-throughput tablet production or custom compounded therapies, our Orphenadrine Citrate adapts to fit your operation. Bulk availability keeps supply steady, while custom packaging and labeling services are ready on request for clinical trials or low-volume pilot batches. Clients value our willingness to support tech transfer, share practical storage strategies, and answer technical questions on the spot. Our QC teams regularly provide reference samples and supplemental documentation, making it easier for you to audit, validate, and document your own operations with confidence.

    Customers appreciate our agility during market shortfalls. When supply chains tighten or regulatory issues delay alternative sources, we scale output and expedite logistics with minimal lead time impact. Over multiple years, we have provided reliable lifelines for partners who otherwise faced costly line-down situations. Whether integrating into existing formulation protocols or launching novel delivery forms, developers rely on our hands-on problem-solving and willingness to adjust pack sizes or configuration.

    Meeting International Requirements, One Shipment at a Time

    Regulatory standards keep evolving, and so do our procedures. Our documentation addresses the needs of different regions, providing batch records, audit reports, and full change history logs. Routine internal and external audits have shaped us into a manufacturer that not only protects its own processes but also supports its partners well beyond the original purchase order.

    Transport and storage guidance forms part of each pack. Temperature loggers and humidity indicators, added on request, help clients verify conditions throughout transit. We select polyethylene, fiberboard, or steel drums with careful consideration for your warehouse and facility layout. Our logistics partners support clear tracking and comply with posted MSDS guidance for handling and emergency scenarios, so you avoid regulatory headaches down the road.

    Practical Benefits Recognized in the Field

    Many of our customers discover the true value of our Orphenadrine Citrate after transitioning from smaller-scale, variable sources. Experienced production chemists report smoother mixing behavior, with less clumping and faster dissolution – a real advantage during large batch preparations where time directly affects cost. Our stability under hot and humid conditions has been proven during trans-oceanic shipping and in regions with tropical climates.

    Tablet and capsule manufacturers avoid excessive fines generation, seeing improved fill consistency and a reduction in rejected lots. During injection solution preparation, clear solubility aids sterile filtration, with no observable residues after formulation. These field results reflect years of relentless manufacturing refinement, not just theoretical claims. Our teams track customer feedback, adjusting parameters and even minor raw material sources if that means shaving an extra impurity or moisture point from the product.

    Transparency in Supply Chain and Process Controls

    We recognize the risks that can lurk in pharmaceutical ingredient supply chains. Global recalls and adulteration cases have made clear the value of tight control over every step in the process. That’s why we emphasize transparency from input to output. Not only do we audit our own plants, but we hold suppliers to the same level of scrutiny. Ongoing relationships with trusted chemical vendors, established over years of routine high-volume trades, keep input quality uniform and costs predictable.

    During annual reviews and customer audits, our open-book policy gives partners peace of mind. We make available not just batch data, but also in-process control results, process deviations, and equipment maintenance logs. By investing in modern chromatography, spectrometry, and particle analysis, we deliver not just a product but a record of reliability. Every step, from raw chemical handling to final sealing, sees hands-on supervision from trained in-house teams, with clear separation from unrelated product lines. That limits both cross-contamination and confusion during line changeovers.

    Continuous Improvement Drives Our Business

    Staying static in pharmaceutical ingredient manufacturing invites risk and regulatory trouble. We invest each year in process improvement, seeking new technologies that offer better yield, lower solvent use, and tighter property control. Recently, pilot studies on alternative crystallization solvents enabled us to reduce trace aldehyde residues to levels far below industry averages, all without increasing production costs. Routine internal Kaizen sessions encourage plant staff to report issues, suggest new solutions, and keep every step as lean as possible — this attitude ultimately benefits product users by keeping timelines predictable.

    We communicate regularly with regulatory agencies and respond to ever-tightening standards. Where pharmacopoeias tighten impurity thresholds, our teams test well ahead of compliance deadlines to eliminate last-minute surprises. Detailed trend analysis of purity, stability, and dissolution across production lots helps anticipate potential specification drift and close gaps before they impact our partners' products.

    Solving Practical Problems for Formulation Scientists

    No material leaves our plant without being considered in the delicate context of formulation. We listen to concerns from pharmaceutical developers, from repeated filter clogging incidents to out-of-spec dissolution curves. Our hands-on technical experts assist in process troubleshooting and offer tips on dissolving, wetting, and storage based on data from real production runs. That experience comes from scientists who've spent careers both creating and using Orphenadrine Citrate, so our advice addresses the nuanced realities of scale-up.

    Partners have reported lower reject rates for blended APIs and improved repeatability between trials. Our technical support teams gather customer experiences, regularly updating material data sheets and FAQ guides to speed implementation and help new users avoid early missteps. We work directly with R&D teams to fine-tune application-specific parameters, including guidance on excipient compatibility, solution stability, and packaging options for specialty projects.

    Setting the Standard for Orphenadrine Citrate Supply

    A strong Orphenadrine Citrate supply means more than hitting purity numbers. Our team recognizes success involves every department, from sourcing and shipping to regulatory support. After shipping thousands of batches worldwide, we have built a record of on-time delivery and responsiveness, proven in both routine orders and critical rush shipments. Partners rely on the depth and professionalism of our staff—chemists, process engineers, audit teams, and logistics planners who know pharmaceutical manufacturing firsthand.

    With years of cumulative experience distilled into each drum shipped, we have shaped ourselves into more than a chemical source—we become an extension of your development and production team. Whether your challenge involves a new regulatory filing, a complex process scale-up, or navigating a material shortage, we offer practical experience and technical expertise to guide each step.

    Orphenadrine Citrate: Trusted for the Future

    The world of active pharmaceutical ingredients keeps shifting, but some values stay constant. We see our role not just as suppliers, but as stewards of a shared goal—safe, reliable, and effective medication for people everywhere. Through our dedication to quality manufacturing and honest, open communication, our Orphenadrine Citrate remains a preferred choice among leaders in generics, branded pharmaceuticals, and specialty compounding. Every order carries the legacy of our commitment, our name, and the trust developed through direct, long-term relationships with manufacturers who expect the best.

    In the demanding world of pharmaceutical manufacturing, we keep raising the bar for what reliable API supply can mean. We invite formulators, QA managers, and procurement leaders to experience for themselves the difference that experience, dedication, and continuous improvement make in every shipment of Orphenadrine Citrate that leaves our doors.