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HS Code |
283404 |
| Iupac Name | Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate |
| Molecular Formula | C16H16ClNO2S |
| Molecular Weight | 321.83 g/mol |
| Cas Number | 120202-66-6 |
| Appearance | White to off-white solid |
| Solubility | Soluble in DMSO, methanol |
| Purity | Typically ≥98% |
| Smiles | COC(=O)C(C1=CC=CC=C1Cl)C2CCN3C2=CC=CS3 |
| Storage Conditions | Store at 2-8°C, protected from light and moisture |
| Synonyms | S-Methyl clopidogrel intermediate |
As an accredited Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging is a 25-gram amber glass bottle, tightly sealed, labeled with the chemical name, hazard symbols, and manufacturer details. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Methyl (+)-(S)-alpha-(o-chlorophenyl)...acetate: 10 metric tons, packed in 200kg HDPE drums, export standard pallets. |
| Shipping | Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate is shipped in tightly sealed containers under cool, dry conditions. Packaging complies with all applicable regulations for hazardous chemicals, including labeling and documentation. Appropriate measures are taken to prevent exposure, spills, or contamination during transport, ensuring safe and secure delivery. |
| Storage | Store Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate in a tightly sealed container, protected from light and moisture. Keep in a cool, dry, well-ventilated area away from incompatible substances such as strong oxidizers and acids. Refrigeration (2–8°C) is recommended for extended stability. Properly label all containers and follow standard safety protocols when handling. |
| Shelf Life | Shelf life: Stable for at least 2 years when stored in a tightly sealed container at 2–8°C, protected from moisture. |
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Purity 99.5%: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with purity 99.5% is used in enantioselective synthesis protocols, where high purity ensures optimal yield and selectivity. Molecular Weight 343.85 g/mol: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with molecular weight 343.85 g/mol is used in pharmaceutical research, where precise molecular mass enables accurate formulation calculations. Melting Point 133-135°C: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with a melting point of 133-135°C is used in solid-state analysis, where thermal stability facilitates reliable DSC profiling. Optical Rotation +67° (c=1, CHCl3): Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with optical rotation +67° is used in chiral compound screening, where stereochemical integrity enhances enantiomeric identification. Stability Temperature up to 60°C: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with stability temperature up to 60°C is used in intermediate storage, where maintained chemical integrity supports subsequent processing efficiency. Particle Size <10 μm: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with particle size <10 μm is used in microreactor flow synthesis, where fine particles promote greater reactive surface area and yield consistency. HPLC Purity ≥99%: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with HPLC purity ≥99% is used in analytical method validation, where high chromatographic purity assures reproducible detection and quantification. Residual Solvent <0.05%: Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine -5(4H)-acetate with residual solvent content <0.05% is used in active pharmaceutical ingredient manufacturing, where low solvent levels ensure compliance with regulatory standards. |
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Manufacturing Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate brings together chemistry that demands precision, real-world understanding, and an ongoing commitment to process reliability. This compound, often referred to in research and by pharmaceutical developers for its chiral purity, has a reputation among those who actually compound it. Manufacturing at scale means attention cannot drift from each reaction—moisture levels, temperature windows, timelines—since small lapses show up downstream, in both the performance and cost of the product.
Customers usually think first about product purity and stability, but we see the roots of quality rest in choosing the right starting materials from the outset, and mapping a full process with reproducible batch outcomes. For chemists in the lab, drift in optical rotation or trace impurity spikes make a world of difference to downstream applications. These are not just metrics on a spec sheet: they result directly from reactor handling, solvent selection, even from vigilance during the crystallization or isolation phases. Factories working with less controlled environments introduce risks at every cycle—which becomes especially important for compounds where chiral specificity and low impurity profiles influence physiological research or pharmaceutical synthesis.
Some might list out stereochemistry and melting points, but achieving reliable stereoselectivity for Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate takes long-term investment in actual process control. Enantiomeric purity—often over 99% in our production lines—comes from constant monitoring at critical control points, not just a robust synthetic route. The product is made to have low residual solvent content, minimal heavy metal impurities, and consistent particle size for downstream integration.
For manufacturers, every kilogram shipped reflects hundreds of analytical checks, high frequency sampling, and repetitive small-batch trialing to keep commercial-scale output within strict limits. HPLC analyses, Karl Fischer titration, and comprehensive NMR checks support every production lot, maintaining not only compliance, but real peace of mind for customers focused on pharmaceuticals or advanced R&D projects. These are not marketing slogans; missing a purity spec can lead to whole days of lost productivity when labs downstream discover a product is out of alignment.
What sets a manufacturing site apart is the understanding that this molecule’s structure—rigid with a thienopyridine backbone and o-chlorophenyl group—presents multiple choke points for unwanted side reactions. We design all reaction steps to minimize formation of regioisomers or racemates; we maintain closed reactors to keep oxygen exposure to an absolute minimum. Water ingress poses a constant challenge, not just for hydrolytic stability, but also because trace water can catalyze side formation of undesired byproducts.
Each intervention along the synthesis, not only chromatography but also controlled quenching and workup, drives the long-term reliability of what ultimately arrives in a researcher’s hand. We see, repeatedly, how process drift—often in less carefully maintained plants—leads to slight deviations that go undetected until the product is subjected to higher-end analytical tests. The root causes often turn out to be preventable: loose SOPs, occasional haphazard measurements, lack of routine calibration on analytical equipment. Our teams train for process discipline because consistency here begets confidence for users later.
Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate has become essential in several advanced settings. As manufacturers, we get direct feedback from the labs leveraging the chirality for key intermediates in anti-platelet agent synthesis, or as cornerstones in experimental pharmaceutical research. Chemists request not only a high-purity chiral product, but batch documentation, impurity profiles, and supply continuity.
We see savvy researchers testing each lot side-by-side to confirm reproduced performance. Consistency gives every project a running start; interruptions from source changes slow progress on grant deadlines or regulatory trials. As the producer, ensuring batch-to-batch reproducibility is not just about following a recipe; it’s about constant improvements to process, updating QC technology, and sometimes auditing our underlying raw materials markets to prevent supply hiccups that could ripple into unforeseen delays.
Those outside direct manufacturing often focus only on the compound’s documented properties, yet the real separation between sources often appears under the stress of industrial and academic research. We have seen issues such as unstable degradation products when competitors drop post-synthesis drying steps or ignore low-level impurities appearing on secondary analytical screens. Once, a lab flagged a competitor’s product due to recurring NMR “ghost peaks”—an issue traced back to poor control in the esterification step, solvated material and unseparated regioisomers. Our process has cut this risk to levels below detectable limits.
This attention to detail brings downstream benefits for those scaling up reactions or relying on high-throughput testing. Be it catalyst screening or animal trials, users have expressed that controlled, reproducible properties free experimentation from confusion caused by variable inputs. Many manufacturers cut corners on these late steps, assuming a quick visual check suffices. We hold that only robust, investigative analysis at every stage prevents costly setbacks at user sites. For those working on regulated projects—especially anything approaching IND-enabling studies—sourcing from a manufacturer that can answer questions about micro-impurity evolution builds trust and saves on regulatory rework later.
Manufacturing this molecule outside the small lab bench brings fresh hurdles. Solvent selection influences purity and yield; recycling and handling create their own shadow costs and affect final contamination. Transfer from kilo-lab to multi-hundred kilogram scales requires testing each variable anew. We have sometimes had to reinvent aspects of crystallization protocols, as scale-up factors change mixing dynamics, and product isolation at a few grams does not match behavior at multi-kilo charges. Simple scale translation fails; only iterative, real-world production runs flush out the critical failure points.
From these experiences, we have learned that tracking full life-cycle data on each process variable—actual temperatures, turbidity during quench, particle morphology during drying—gives the clearest route to repeatable, high-quality output. Teams maintain production logs, run batch genealogy tracking, and periodically sample finished lots for out-of-spec signals even if their primary results check out. Over the years, reducing batch-to-batch variability has become almost routine, yet no two runs are truly identical unless management and operators treat every aspect as critical.
Users in both pharmaceutical and research industries press for shorter lead times, better documentation, customizable impurity thresholds, and periodic analytical reports. Our product teams continually revisit analytical methods—enhancing detection for even trace chiral impurities or exploring newer techniques like qNMR for purity benchmarks. This reflects a growing expectation from customers: not just a data sheet, but the capacity to provide answers fast, show batch histories, and tackle non-routine queries about stability under specific storage or process conditions.
Beyond core manufacturing, logistics and packaging matter just as much. Our experience with moisture- and light-sensitive products has taught us to invest in multilayer barriers, inert gas blanketing, and short direct shipping lanes. Small shifts in storage temperature or warehouse airflow can turn a batch suboptimal before it even reaches the lab, so handling protocols stretch all the way from reactor through to delivery dock. Resolving incidents—such as condensation inside a shipment after winter routing—means customers see not just the claim of quality but clear steps and real solutions.
We have seen a shift over recent years among major users, who now demand full chain-of-custody documentation and trace impurity logs for every batch. The lessons from tightening global standards teach manufacturers that true traceability strengthens every customer relationship. By logging each run—and archiving raw data from HPLC, GC, and other methods—responses to audits or after-sale inquiries become factual and fast. Stakeholders gain reassurance from being able to look deep into process decisions, not just at the superficial data. Our team makes these records available proactively for regulated applications, providing certificates that reflect real analysis on each delivered lot.
Handling regulatory inspections for this molecule has made it clear that process knowledge has to be active, not theoretical. Each time the analytical team picks up a micro-level impurity or signs of batch aging, we investigate root causes, adjust SOPs, and update customer communications. Critically, this makes it possible for users to plan long-term studies or manufacturing runs with lower supply chain risk. Partners conducting multi-year programs especially appreciate knowing their supply chain leaves no black holes or hard-to-trace failures.
No process stays perfect. Markets respond to new regulations, evolving pharmacopoeia standards, and changing synthetic strategies on the client side. Our R&D and process engineers update the manufacturing route periodically, not just to optimize cost, but to tighten outcomes when internal or external data flags yield-drifting, byproduct spikes, or supply chain disruption.
Real improvement comes from bringing together feedback from dedicated users, their actual use cases, and frontline production staff. Some process changes—such as adjusted crystallizer geometries or reactor coatings—arose not from speculative science, but from direct observation during production or from recurring customer feedback. Adjusting workflows for tighter chiral purity or even for more manageable downstream formulation brings concrete improvements.
Handling challenges like raw material shortages or energy price spikes has made it clear that robust planning and cross-supplier benchmarking are now as essential as reactor maintenance. Production never follows a straight line, and each shift in regulatory climate or feedstock quality prompts fresh review. By investing in analytical chemistry, audit trails, and plant modernization, we keep pace with changing industry expectations. Our ongoing engagement with both academic and industrial chemists brings in new perspectives and keeps the product competitive in the markets that value full, transparent understanding of each molecule’s journey.
Producing Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate responsibly also brings a focus to emissions, waste management, and personnel well-being. Over the years, process optimization has helped us lower solvent losses, reduce energy consumption through better reactor jacket controls, and recycle mother liquors wherever purity risks are not increased. Employees participate in safety training for handling sensitive intermediates and maintaining strict PPE routines during sampling, reactor charging, and centrifugation.
Incidents do occur in chemical manufacturing, but internal reporting and frequent drills mean that our team reacts swiftly and with purpose. We conduct real-time air and effluent monitoring to flag any exceedances, quashing problems before they escalate. Finding ways to both meet regulatory standards and lower the real-world footprint of production keeps us agile and sustainable in operations, responding both to law and to local community expectations.
Even the world’s most robust process occasionally throws curveballs. Teams supporting researchers and process developers frequently get questions on scale-up, solubility in less common solvents, or crystal habit variations by season. One recent situation saw a research team struggle with filtration times after changing formulation methods; reviewing our in-process analytics, we identified an unplanned polymorph thanks to environmental swings in warehouse temperatures. Because manufacturing teams track these incident patterns, we deliver solutions and collaborate on workaround strategies so R&D cycles minimize delay.
As manufacturers, we recognize that successful product experience goes beyond specifications. Open discussions on failure points, sharing lessons learned, and providing technical support are core to every lasting customer relationship. This comes from experience: those who try to disguise or downplay issues end up with downstream clients doubting every shipment and running their own duplicative tests. By taking on the troubleshooting—whether with on-site technical staff or detailed analytical dossiers—we aim to solidify partnership, foster process innovation, and deliver value beyond the molecule itself.
Throughout our years manufacturing Methyl (+)-(S)-alpha-(o-chlorophenyl)-6,7-dihydrothieno(3,2-c)pyridine-5(4H)-acetate, feedback from industry partners, academic teams, and regulatory inspectors has shaped a deeper practical understanding of what sets this product apart when made with stringent controls. It comes down to rigorous process management, responsive technical support, and a company-wide mentality to keep improving. Each batch, each challenge provides data that folds back into how we work.
As manufacturing continues to evolve, and as customer demand grows worldwide for traceable, reliable chiral building blocks, our commitment to process visibility and quality assurance remains at the center of every kilogram we produce and ship. Our own work experience has shown—time and again—that informed, attentive manufacturing turns molecules into keystones for scientific progress and business success.