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HS Code |
547182 |
| Chemical Name | S-(-)-Carbidopa |
| Cas Number | 28860-95-9 |
| Molecular Formula | C10H14N2O4 |
| Molecular Weight | 226.23 |
| Appearance | White to off-white crystalline powder |
| Purity | Typically ≥98% |
| Melting Point | 205-208°C |
| Solubility | Soluble in water |
| Storage Temperature | 2-8°C |
| Optical Rotation | [α]D20 -21° to -25° (c=1, H2O) |
As an accredited S-(-)-Carbidopa factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for S-(-)-Carbidopa, 1 gram, is a sealed amber glass bottle with a secure screw cap and clear labeling. |
| Shipping | **Shipping Description for S-(-)-Carbidopa:** S-(-)-Carbidopa is shipped in tightly sealed, inert containers to protect from moisture and light. It is transported under cool, dry conditions with appropriate labeling for hazardous materials. Ensure compliance with all regulatory and safety guidelines during handling and shipping. Detailed documentation accompanies the shipment for traceability and safety. |
| Storage | S-(-)-Carbidopa should be stored in a tightly closed container, protected from light and moisture. Keep it at a temperature of 2–8°C (refrigerated conditions). Ensure proper labeling and avoid exposure to air and high humidity to maintain its stability. Store in a well-ventilated, secure chemical storage area, away from incompatible substances and direct sources of heat. |
Applications of S-(-)-Carbidopa in Industrial ManufacturingS-(-)-Carbidopa supports critical manufacturing processes within the global pharmaceutical ingredient supply chain. As an experienced producer, we deliver this enantiomer for niche applications that require high purity, full GMP controls, and validated integration into solid and liquid synthesis. The following sectors represent compliant, high-volume end uses of S-(-)-Carbidopa with detailed application pathways. 1. Levodopa Combination Drug Production (Parkinson’s Disease Therapeutics)Pharmaceutical companies use S-(-)-Carbidopa as a peripheral dopa decarboxylase inhibitor in the fixed-dose combination with Levodopa for Parkinson’s disease treatment. In this field, S-(-)-Carbidopa ensures Levodopa can cross the blood-brain barrier without premature conversion, increasing central nervous system availability and reducing peripheral side effects. Manufacturing typically applies direct blending in granulation or film-coating steps for oral solid dosage forms, with rigorous batch tracking and in-process verification for potency and impurity control. Industry compliance standards
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2. Microtableting and Microdosing System ManufacturingProducers of controlled microdosing platforms incorporate S-(-)-Carbidopa as an integral component in precision tableting lines for personalized Parkinson’s treatment. Microtablet manufacturing requires highly pure S-(-)-Carbidopa for uniformity at sub-milligram levels, demanding strictly validated reproducibility and in-line process analytics. The material enters directly at the powder blending stage with innovative microdie filling, followed by laser drilling and automated visual QC to minimize batch variability. Industry compliance standards
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3. Injectable Levodopa/Carbidopa FormulationSpecialty drug manufacturers utilize S-(-)-Carbidopa for injectable levodopa/carbidopa suspension, including intestinal gel products for patients with advanced Parkinson’s disease. This process requires S-(-)-Carbidopa to meet parenteral-grade purity, endotoxin limits, and trace impurity thresholds, with strict aseptic processing and sterile filtration. The material is solubilized under controlled conditions, co-formulated with Levodopa, stabilized, and filled under Class 100 environments before terminal sterilization or validation of aseptic fill-finish. Industry compliance standards
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4. Research-Grade Preclinical Compound SynthesisCROs, pharmaceutical research divisions, and university spin-offs acquire high-purity S-(-)-Carbidopa for in-vitro bioscreening, DDC inhibition assays, and animal modeling studies. The material acts as a key compound in early discovery pipelines for neurodegenerative disorders and acts as a reference standard in establishing analytical and pharmacokinetic models. Users require full traceability to ISO 17034 reference material status and documented absence of cross-contamination with enantiomeric or process-related impurities, supplied in small batches with validated homogeneity. Industry compliance standards
Typical usage ratio
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Competitive S-(-)-Carbidopa prices that fit your budget—flexible terms and customized quotes for every order.
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In the field of pharmaceutical raw materials, consistent quality isn’t just a talking point—it’s the backbone of our reputation. Manufacturing S-(-)-Carbidopa places us right at the intersection of chemistry, human need, and industry accountability. Delivering this vital intermediate, we see every batch as a responsibility tied directly to patient health. Many in the supply chain claim similar dedication, but from where we stand—compounding, filtering, and inspecting every lot—we know the difference is in the detail, and the discipline that goes with it.
A chemist who handles the production of S-(-)-Carbidopa—from weighing the exact grams of starting materials to monitoring reaction conditions through the night—can spot shortcuts a mile away. Our team makes this enantiomer through careful stereoselective synthesis, because medical teams trust it as a building block for drugs such as carbidopa-levodopa combinations that help manage Parkinson’s disease. Unlike the racemic forms, this S-(-) enantiomer delivers targeted pharmacological activity, a crucial difference that comes directly from the manufacturing line and our analytical bench.
Our batches always reflect clear documentation. We produce material to meet current pharmacopeial standards, both in chemical purity (often exceeding 99 percent by HPLC) and enantiomeric excess. Handling this high standard daily, our team has developed proprietary process improvements for yield optimization and impurity control. Specifications are not a formality here—each certificate of analysis is a report card on our process discipline. Years of process refinement have reduced the main impurities below the tightest global thresholds, not only enhancing safety for further processing but providing a stable, predictable raw material to our clients. Those who have spent any length inside a cGMP plant will recognize the difference that emerges from hands-on, vertically integrated manufacturing compared to generic bulk material handling by resellers or traders.
We don’t simply supply S-(-)-Carbidopa as a substance; we support our partners through all stages of drug formulation. Having worked with formulation scientists, our technical team understands the challenges drug developers face. S-(-)-Carbidopa serves as an essential intermediate for carbidopa-levodopa therapy. Precise control over chirality and purity translates to more reliable and reproducible active pharmaceutical ingredient (API) synthesis. We’ve supported validation batches and helped troubleshoot process scaling—our presence doesn’t end with the purchase order.
The people who reach out for S-(-)-Carbidopa typically want more than a molecule—they look for an experienced partner. Over the years, we have learned to anticipate needs that don’t always appear on a spec sheet: long-term stability profiles, batch traceability, customized lot sizes, compliance with changing regulatory regimes, and full transparency on potential genotoxic impurities. It is not rare for customers to ask detailed questions about process controls and reaction solvents, and we answer them directly, without hiding behind bureaucracy.
In this market, many players offer S-(-)-Carbidopa in various grades, from industrial to pharmaceutical. We have invested heavily in cGMP infrastructure, data integrity protocols, and batch-level analytics. A molecule with the same name and CAS number can still differ widely in the impurity profile, stability, and how well it performs in downstream synthesis. With small molecules like this, consistent melting point, moisture content, and residual solvents matter. Our team conducts in-house stability studies and verifies every analytical result with validated equipment.
Having faced regulatory audits—not just in paperwork, but on the plant floor—we have shaped our operations to meet pharmaceutical expectations at every level. Clients receive full access to batch manufacturing records and can request site inspections or detailed process walkthroughs. Many suppliers shy away from this openness. As manufacturers, our pride comes from showing not just the product, but the processes and teams behind it.
We pay attention to global recalls and quality alerts. Too often, a lack of manufacturing traceability or insufficient chiral analysis has resulted in batch failures or worse—contaminated medicines reaching patients. By handling every step ourselves—from chiral resolution to the finished, packaged ingredient—we avoid the uncertainties caused by multi-layered supply chains. Quality failures aren’t abstract for us; they represent wasted resources, lost trust, and, most importantly, risks to patient safety. After witnessing the cost of shortcuts, our company doubled down on internal controls—pre-releasing no batch until it passes parallel internal and third-party verification.
Our chemists work with the understanding that the S-(-)-Carbidopa they create will eventually form part of a drug used by someone dealing with serious illness. Every failed batch is reviewed, not just from a regulatory perspective but as a learning opportunity. Root-cause analysis of any deviation, coupled with open laboratory discussions, pushes our standards continually higher. This practical ethos is something that permeates every level of our operation, from raw material vendor qualification to finished product release.
Anyone sourcing S-(-)-Carbidopa from generic bulk traders will notice the difference immediately when working with a dedicated manufacturer. Our ability to track every lot—down to the batch number of every solvent—provides transparency other channels can’t. Each kilogram leaves our facility with full documentation, including impurity profiles, COAs, retention samples, and analytical trace files. Our customers aren’t left guessing about stability data or batch consistency. If a formulation team encounters a question mid-process, our technical support can walk them through the production history, verify emission controls, or address specific handling requirements without delay.
Those who have felt the frustration of variable impurity profiles or insufficient documentation know the value of manufacturer relationships. Distributors may promise speedy shipments, but seldom offer the technical depth needed when processes require optimization. We remain accessible for dialogue because we believe transparency is the only way to foster real trust in the supply chain.
Chiral intermediates are where a difference of a few percentage points in purity or isomer ratio can fundamentally alter therapeutic outcomes. S-(-)-Carbidopa’s success in downstream synthesis depends on controlling stereochemistry from the first reaction step onward. Our chiral syntheses avoid racemization events through rigorous monitoring and post-synthesis purification sequences. We did not stumble on a robust methodology overnight; it was years of iteration, scale-up failures, and collaborative research with academic partners that brought our process to its current state.
Drug makers using our material report fewer downstream filtration issues, cleaner spectra in final API release, and smoother regulatory submission processes due to our detailed traceability and impurity mapping. These outcomes don’t emerge by accident. Behind each delivered lot are dozens of analytical checks, each calibrated to catch the smallest deviation before it exits our doors.
Having operated both pilot and commercial-scale reactors, we respect the reality that many raw materials can behave differently under scale stress. Temperature gradients, mixing profiles, and even the choice of antisolvent can shift the impurity burden dramatically. In our plant, process control begins with raw material testing—every barrel is fingerprinted with chromatographic and spectrometric validation before entering the production line.
Throughout synthesis, we favor in-process controls with real-time decision-making by experienced chemists. We impose redundant sampling and analytical checks throughout each campaign. Finished S-(-)-Carbidopa receives an extended battery of identity, purity, and chiral excess verifications, with results tracked digitally and verified independently by quality personnel. It’s not enough to meet the release standard once; we pursue repeatability, batch after batch, because every deviation is a potential downstream problem for our customers.
S-(-)-Carbidopa sometimes looks like a commodity when reduced to its technical sheet—CAS number, melting point, purity. But to the people formulating drugs, resolving regulatory queries, or explaining batch discrepancies in a production meeting, the difference between one kilogram and another can fill binders of supporting documentation. Our years in the chemical trenches have taught us to think beyond the next batch order or regulatory filing. We invest in continuous improvement initiatives—cycle time reduction, automation of key synthetic steps, digital batch records—because regulatory requirements evolve, and so do our customers’ expectations.
Staff undergo frequent retraining and certification not because it’s mandated, but because ongoing development helps us match the pace of scientific progress. With each audit and customer feedback session, our technical team updates procedures to close any gaps. Routine isn’t an option when lives can depend on a single impurity not making it into the final product.
Short-term gains and opportunistic sales never built a sustainable chemical business. Over the years, our team has supported research and commercial launches for some of the world’s most demanding pharmaceutical companies. That experience sharpened our awareness of the pain points customers face. Whether adapting batch sizes for preclinical research or creating supply chain redundancy for commercial launches, flexibility and understanding spice up our day-to-day work just as much as technical mastery does.
Customers rarely forget a manufacturer that helps them resolve a regulatory audit or loss of traceability crisis. Rather than cycling through suppliers on a cost basis, our partners usually return because they know their raw materials arrive with complete chain-of-custody records and batch-to-batch consistency. This commitment goes beyond a signature on a COA; it’s present in our approach to everyday decision-making and how we prioritize customer inquiry response time. As the regulatory landscape tightens, this difference becomes more pronounced, setting manufacturers apart from middlemen with only surface-level knowledge.
Every manufacturer faces headwinds, from shifting raw material supplies to evolving international compliance regimes. During periods of global raw material shortages, our investment in multiple approved suppliers and local sourcing initiatives has kept us agile. Internally, we maintain a standing cross-functional task force to pre-empt issues before they ripple downstream. That team doesn’t just issue SOPs from an office; they walk the warehouse, run surprise audits, and trace lot movements daily. In terms of compliance, we continuously harmonize our analytical methodologies with international guidelines, staying aligned with both established and emerging regulatory demands.
Supply chain stability is increasingly fragile, and regulatory shifts mean documentation requirements can evolve unexpectedly. To keep pace, we share regulatory intelligence with our customers and collaborate on documentation updates. By remaining involved through end-use validation and regulatory submission phases, we act as a bridge between raw material synthesis and clinical success. That ethos comes from our background in making—not just selling—chemicals. We’ve succeeded because we adapt the manufacturing line itself to these changes, not just the paperwork.
Every long-term customer relationship reveals friction points. Some clients discover, mid-campaign, that their previous material sources allowed higher-than-expected levels of critical impurities. In response, we often provide technical data, impurity standards, and analytical methodologies tailored to support client validation efforts. This consultative role emerged out of necessity, driven by repeated requests from partners struggling with generic bulk supplies.
Our expertise extends to helping customers identify and solve process impurity issues, optimize their isolation techniques, and supply stability data for regulatory filings. By offering this direct technical engagement, we’ve become more than a vendor; we act as a technical ally. Many process improvements originated from these collaborations, with feedback loops from formulation labs guiding adjustments to our own manufacturing process. This, in turn, delivers material that transitions more efficiently through each development phase and into commercial use.
Each year brings fresh challenges and opportunities to refine our process for S-(-)-Carbidopa. Automation, digital batch tracking, and expanded analytical capabilities have all contributed to tighter process controls and more robust documentation. As we introduce new technology, our team remains focused on translating these advancements into tangible benefits for our partners: shorter lead times, customized lot deliveries, improved process yields, and even higher batch reproducibility.
We recognize that no process is ever finished. We invest in process analytical technology (PAT), inline monitoring, and dashboard-based traceability systems to ensure oversight never lapses. Consultants and regulatory partners audit us regularly, and every finding spurs prompt improvement cycles. Rather than reacting to issues, we favor a preventive approach—linking up analytical laboratories, process teams, and quality units in daily stand-ups, not just quarterly reviews. Through this integration, each batch of S-(-)-Carbidopa incorporates the latest in both chemical and quality science, remaining anchored in the practical realities of pharmaceutical manufacturing.
The chemical industry faces relentless scrutiny, rising regulatory standards, and increasing demand for tailored support. Within this environment, our commitment to manufacturing S-(-)-Carbidopa stands as a testament to hands-on experience, investment in people and technology, and respect for industry partners. The molecule itself serves life-changing therapies, but the process that underpins it reflects decades of learned expertise—chemists refining techniques on the production line, quality specialists dissecting every out-of-spec reading, and a leadership team that re-invests in continual improvement rather than resting on past performance.
We welcome ongoing dialogue with researchers, formulators, regulatory specialists, and all stakeholders who depend on reliable, high-quality S-(-)-Carbidopa. Years of manufacturing have taught us one fundamental truth: genuine value stems not from the cost per kilogram, but from the combined trust, technical support, and assurance that every batch delivered will perform, every time. From our plant floor to your finished formulation, that is a difference only a committed manufacturer can claim.