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Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate

    • Product Name Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate
    • Alias Methyl 5-benzo[c][1,2,5]thiadiazolecarboxylate
    • Einecs 410-310-8
    • 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
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    Specifications

    HS Code

    492232

    Iupac Name Methyl benzo[2,1,3]thiadiazole-5-carboxylate
    Molecular Formula C9H6N2O2S
    Molecular Weight 206.22 g/mol
    Cas Number 39753-53-4
    Appearance Off-white to yellow solid
    Melting Point 98-102 °C
    Solubility In Water Slightly soluble
    Smiles COC(=O)c1ccc2nsnc2c1
    Purity Typically ≥98%
    Storage Conditions Store at room temperature, dry, away from light
    Synonyms Methyl 1,2,3-benzothiadiazole-5-carboxylate

    As an accredited Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 25-gram amber glass bottle with a tight-seal cap, labeled "Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate, 98% purity, CAS No."
    Shipping Methyl Benzo-2,1,3-thiadiazole-5-carboxylate is shipped in sealed, clearly labeled containers, protected from light and moisture. Transport is conducted according to standard chemical safety procedures, with supporting documentation, and in compliance with local, national, and international regulations for hazardous chemicals. Ensure appropriate personal protective equipment upon receipt and handling.
    Storage Store **Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate** in a tightly sealed container, away from moisture, heat, and direct sunlight. Keep in a cool, dry, and well-ventilated area, separate from incompatible substances such as strong oxidizing agents. Proper labeling and secondary containment are recommended to prevent accidental spillage or exposure. Handle while wearing appropriate personal protective equipment (PPE).
    Application of Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate

    Applications of Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate in Industrial Manufacturing

    Our direct production facilities supply Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate to a range of industrial customers. This specialty intermediate supports a series of chemical manufacturing flows, primarily in advanced material synthesis and specialty active ingredient preparations. Below, we outline core, compliant application scenarios from existing downstream sectors in the global market.

    1. Pharmaceutical Intermediate for Benzothiadiazole-Based Drug Synthesis

    Pharmaceutical manufacturers use this compound as a building block when assembling benzothiadiazole-based APIs for antihypertensive and diuretic medications. The material participates in multi-stage synthetic routes, where strict impurity control and reproducibility are required. Regulatory bodies set protocols for quality assurance throughout process scale-up, with traceability from raw material intake to final formulation. This intermediate must meet stringent trace impurity profiles, handled within validated chemical synthesis suites in compliance with cGMP mandates.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • EU GMP Volume 4 – Part II
    • U.S. FDA 21 CFR Part 211 (Finished Pharmaceuticals)
    • Ph. Eur., USP monographs for finished substances

    Typical usage ratio

    • 0.5% – 3% in the final stepwise synthesis route, adjusted according to the active moiety loading and process yield targets

    Downstream process integration

    • Introduced at the heterocyclization or ester hydrolysis stage as a key intermediate prior to core structure cyclization
    • Subjected to in-process controls for residual solvent and elemental impurities
    • QC-tested for pharmacopoeia compliance before release for further synthesis or formulation

    Final product types

    • Benzothiadiazole-class diuretics (e.g., hydrochlorothiazide precursors)
    • Cardiovascular therapeutics containing benzothiadiazole moieties
    • Synthesized active pharmaceutical ingredients

    2. Crop Protection Intermediary for Agrochemical Synthesis

    Major agrochemical formulators employ this molecule within synthetic routes for advanced benzothiadiazole-based fungicides and plant defense activators. The compound acts as a core skeleton provider, imparting systemic acquired resistance traits in plant protection agents. Its use supports tight control of active ingredient identity, necessary for regulatory registration and routine quality checks in high-purity pesticide manufacturing lines.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • ISO 9001 Quality Management (agrochemical supply)
    • REACH Registration (EC/1907/2006) for substance use in agriculture
    • OECD guidelines for pesticide manufacturing and impurity profiles

    Typical usage ratio

    • Typically 1.2% – 4.5% in the active ingredient synthetic sequence, depending on the crop protection agent design

    Downstream process integration

    • Charged during multi-step synthesis for construction of the benzothiadiazole nucleus
    • Controlled reaction under inert atmospheres for stable intermediates
    • Final purification aligns with regulatory limits for by-products and impurities

    Final product types

    • Benzothiadiazole-based fungicides
    • Plant resistance inducers
    • Precursor stocks for field-ready plant protection formulations

    3. Electronic Chemicals for Photoresist and Dye Intermediate Preparation

    IDesignated firms in electronic materials apply this compound as a substructure in the synthesis of functional dyes and photoresist components. It introduces specific electronic properties required for high-precision lithography and thin film technologies. Material inputs must conform to rigorous semiconductor and electronic grade impurity thresholds, matching the reliability standards set by advanced manufacturing QC systems.

    Industry compliance standards

    • IEC 60747-1 for semiconductor-grade material purity
    • JEITA standards for chemical contamination in electronic manufacturing
    • ISO 9001:2015 for electronic specialty chemicals
    • RoHS Directive (EU) 2011/65/EU for restricted substances

    Typical usage ratio

    • Used at 0.6%–2.8% in the functional component formulation, adjustable depending on targeted optical density and conductivity properties of the final film

    Downstream process integration

    • Integrates as a core intermediate in dye coupling reactions or photoactive compound formation
    • Added prior to solvent casting for uniform molecular loading
    • Monitored for trace level metals and solvents to prevent device-level failures

    Final product types

    • Photoresist compounds for photolithography
    • Functional dyes for display technologies
    • Chemical precursors for conductive polymer coatings

    4. Specialty Polymer Additive for Advanced Material Engineering

    Polymer and specialty materials manufacturers introduce this raw material during the synthesis of engineering polymers incorporating benzothiadiazole units. These units enhance UV resistance, flame retardance, and stability in specialty resins and coatings. The additive must pass compounding and aging validation under standard test protocols, and manufacturers adjust ratios according to final product requirements for mechanical and environmental resilience.

    Industry compliance standards

    • ASTM D638 / D790 mechanical test standards
    • UL 94 for flammability ratings in polymeric materials
    • ISO 11357 for polymer thermal analysis
    • REACH compliance for specialty polymer additives

    Typical usage ratio

    • 0.3%–1.0% by mass in polymer blends, adjusted during pilot trials to meet final durability and hazard rating specifications

    Downstream process integration

    • Introduced during the polymerization or compounding stage
    • Blended with monomers or resins under controlled temperature conditions
    • Tested for dispersion, compatibility, and property stability post-processing

    Final product types

    • UV-stabilized polymer films and sheets
    • Flame-retardant engineering plastics
    • Performance coatings with enhanced longevity
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    Certification & Compliance
    More Introduction

    Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate: Performance and Practical Value from the Manufacturer’s Bench

    Direct Insight Into a Proven Synthesis Asset

    Our journey with Methyl Benzo-2,1,3-Thiadiazole-5-Carboxylate (MBTDC) goes back more than a decade, spanning countless reaction runs and finished batches for both pilot and commercial scale. Watching this molecule move from flask to drum, we see daily how its chemical reliability and purity make a real difference for formulators, especially when purity cuts down trouble at later stages of synthesis or formulation.

    Each batch of MBTDC we produce lands at a tightly controlled specification for assay, water content, and critical impurities, measured with in-house high-performance liquid chromatography and GC. We maintain a standard content above 99.0%. The product appears as an off-white crystalline powder, a subtle hue that says a lot – trace impurities can shift color, so decades of lab experience have taught us to trust our methods and eyes alike.

    The Science and Hands-On Application

    MBTDC is not a bulk commodity, and that’s a strength. Its selective substitution on the benzothiadiazole ring allows downstream chemists to leverage both aromatic and heterocyclic reactivity. Methyl ester at the 5-position opens up straightforward ester hydrolysis and amidation, supporting the preparation of high-performance herbicides and small active ingredients in life sciences. As a manufacturer frequently supporting contract synthesis projects, we notice most end-users appreciate how MBTDC’s functional groups provide stable handles for further derivatization.

    Compare MBTDC’s value to a standard benzothiadiazole or more basic methyl benzoate. The specificity of the 2,1,3-thiadiazole core changes electron density compared to simple benzoates, enabling different reactivity profiles with nucleophiles or electrophiles. This feature’s not just theoretical: the improved selectivity and stability show up every time we ship samples for library-building in agrochemical R&D, and our technical service team fields questions that only come with true hands-on use.

    Traceability and Quality Assurance

    From the chemist’s perspective, traceability starts in the tank: MBTDC is never just a CAS number, it’s a real material with measurable quality markers and a documented process chain. Each step, from raw material selection—often monitored down to ppm metallic contaminants—to crystallization finishing, has clear records. Auditors and long-term clients often visit our plant precisely because consistency in fine chemicals isn’t achieved through paperwork alone. Regular method validation and calibration ensure every GC or HPLC trace matches the method books our process chemists use on the floor.

    Impurities matter. We run impurity fingerprinting on every campaign, since trace hydrolyzed acid or unreacted starting materials complicate purification for API or pesticide synthesis. This attention reduces costs and the risk of performance issues downstream. It keeps our MBTDC reliable for even the longest-running customers, some of whom have used the same grade in dozens of scale-ups.

    MBTDC in Real-World Synthesis: Feedback from Our Partners

    MBTDC supports innovation in agrochemical, fine chemical, and sometimes specialty polymer development. From our point of view, the big advantage comes when a customer’s process engineer can plug MBTDC directly into a step that previously needed extra protection or deprotection chemistry when using less specific esters. Saving a step in synthesis can trim weeks from development timelines in practice.

    Several clients told us that substituting MBTDC for phenyl methyl ester or simpler thiadiazole derivatives allowed for higher conversion rates and more consistent yields, especially at plant scale. That feedback is grounded in technicians watching for color changes or off-odors during run-up, not just in theoretical yields from lab notebooks. Our technical support team routinely works side-by-side with customer teams to troubleshoot or optimize these real-world scenarios.

    For custom syntheses, our process team has repeatedly seen that MBTDC withstands more aggressive heating and solvents than some similar esters. This thermal robustness helps reduce unwanted side-reactions when running multi-hour batch processes; many ester substrates degrade or hydrolyze in basic or acidic media, but our MBTDC retains chemical integrity in conditions that would challenge most methyl esters.

    Trace by-products, especially methyl benzoates, can wreak havoc in downstream purification, and our purification process narrows that risk. When our QC chemists spot an out-of-spec impurity, they halt the batch and rerun the crystallization. This direct approach cultivates trust with contract partners.

    The Practical Differences: MBTDC Stands Apart from Commodity Esters

    The main difference running MBTDC compared to lower-grade or alternate esters appears in its chemical selectivity. Having the 2,1,3-thiadiazole ring makes for different resonance stabilization, so reactivity under classic ester hydrolysis or amidation steps changes. For formulators, this means you don’t fight para- or ortho-isomer issues that complicate benzothiadiazole chemistry from less specific routes.

    Cost isn’t the only factor. Cheap commodity esters can slow things down if they require additional purification or bring in trace metals from less-controlled manufacturing, forcing repeat work and extra analytical testing. Our long-standing production know-how ensures batch-to-batch consistency: we have lab books from over a hundred campaigns, and we’ve invested in extra filtration and drying stages for MBTDC to deliver tight moisture and impurity specs. Incoming audits focus on this aspect, and external labs routinely confirm our analysis.

    Another core difference lies in shelf life and packaging stability. MBTDC is sensitive to ambient humidity if left in open trays, because the carboxylate groups can hydrate and form small amounts of acid in high moisture. Years of packaging practice led us to vacuum-sealed, low-permeability bags, tested across temperature cycles, and we draw on real field data from end users who return unused product for testing. The material stays chemically stable for years in climate-controlled storage, with no drop in purity or handling performance.

    We respond to many requests from labs that had ordered generic methyl esters for small-scale reaction runs, only to discover inconsistent spectra or variable conversion in product testing. MBTDC brings certainty back to the bench—the targeted synthesis and in-process control built into every batch help avoid the classic headaches of re-washing, re-crystallizing, or re-running reactions due to poor input quality.

    The Manufacturer’s View on Environment and Compliance

    We have followed the evolving environmental and compliance standards for specialty chemicals. Manufacturing MBTDC means paying attention to not only finished product purity, but also to solvent recovery, safe handling of process waste, and emissions from chlorinated or sulfur-containing intermediates. Over time, we invested in on-site solvent recycling units and have built up a closed-loop process for sulfur management, ensuring our site meets or exceeds regional discharge guidelines.

    Maintaining compliance means our technical files and material trace history are always up to date. During site audits, we allow partners to review everything from batch records to operator logbooks. Regulators and clients alike often ask to see retention samples tracked to the production lot—such transparency helps lower risk throughout the value chain, especially when MBTDC serves as a starting material for synthesis of regulated actives in crop protection or medicines.

    Our plant engineers designed reaction blocks with thorough fail-safes: pressure and temperature sensors trip automated shutdowns before any exothermic event could spiral. This risk mitigation is not academic—it comes from rounds of hazard analysis on every process, an approach that keeps our teams safe and our finished product batch records spotless over long campaigns.

    Supporting Sustainable Supply Chains

    Sustainability extends beyond a one-off change in production. We minimized energy consumption in the synthesis of MBTDC by optimizing reaction temperatures and batch loading protocols based on actual energy audits, not just theoretical heat balances. Where we source feedstocks, we demand full traceability for any aromatic or sulfur-containing input, and we screen potential suppliers annually for compliance with environmental and social standards.

    In response to growing customer scrutiny about chemical origins, we’ve partnered with logistics providers who understand specialty chemical handling safety and offer real-time shipment tracking for all MBTDC consignments. This helps keep our partners in the loop, reduces transit delays, and avoids unnecessary exposure of the product to environmental fluctuations during shipment.

    Years of managing lean inventories and just-in-time delivery have taught us that resilience in the supply chain remains essential. We maintain reserve capacity in our reactor sets and keep raw material buffers in climate-controlled buildings, so disruptions elsewhere don’t lead to MBTDC shortages. Our clients appreciate clear communication—when a sector experiences global supply crunches, our advanced planning and transparent status updates minimize buyer risk.

    Real Production Stories from the Shop Floor

    Producing MBTDC at scale isn’t about pushing buttons on a digital interface. It pulls together a web of hands-on decisions, from raw material thaw times to adjusting crystallization rates on winter nights. Our senior operators, working side-by-side with chemists, have adapted the same batch recipe over the years to weather changes in raw material purity, new safety rules, and even shifts in utility steam pressure. Mistakes happen on the floor—what matters is our culture of immediate reporting and cross-shift troubleshooting.

    A few years ago, a minor change in upstream methyl benzoate supplier introduced an unanticipated impurity, impacting a run mid-campaign. Drawing on our in-house analytical know-how, we identified and isolated the culprit within hours, and production only resumed after filters and reactor lines had been deep-cleaned and a full impurity reprofile completed. Having technical staff invested in both the day-to-day operation and longer-term improvement projects lets our MBTDC stand out in an increasingly automated industry.

    Process evolution happens as much in the maintenance shop as in the lab. Pump selection, gasket choices, and solvent transfer hoses affect MBTDC purity and batch reproducibility; each operator logs trends, and monthly improvement meetings ensure best practices spread across shifts. These granular details keep every batch consistent—not just in purity, but in physical handling, so our MBTDC doesn’t cake, bridge, or segregate in bins.

    Experience-Driven Solutions to Common Challenges

    Feedback from our clients drives process improvements. A major formulation partner reported difficulty dissolving generic MBTDC from another producer, especially at higher concentrations. We traced the problem to particle size and surface area distribution, so we retooled our milling operations and now produce MBTDC with controlled particle size, tailored for rapid dissolution in standard process solvents.

    Handling hazards matter. We invested in local exhaust hoods and temperature-monitored reactors, not just to comply with regulation but to keep operators safe. Close attention to powder transfer and minimal handling in enclosed systems protect our team and maintain low levels of airborne dust, reducing occupational risk. Unlike automated systems, long years on the floor mean our operators recognize process upsets early—be it from noise, vibration, or subtle odor shifts.

    On the user end, MBTDC sometimes faces long-distance shipment through heat or humidity swings. Learning from feedback where caking or clumping appeared, our packing team trialed new liner and box combinations; subsequent field testing showed a marked improvement in free-flowing product under tropical transport. These are small victories, but they build quality into every shipment.

    Documentation and transparency differentiate our approach. Shipping MBTDC with a complete batch file—covering synthesis, milling, packaging, and QC—gives the customer confidence in tracking and regulatory reviews. Feedback consistently highlights the value of live support when troubleshooting or compliance questions arise, and our team remains directly accessible for these needs.

    Application Highlights from R&D to Plant Floor

    Lab-based R&D and full-scale production both benefit from the selectivity and purity MBTDC offers. During iterative discovery chemistry, the clean reactions it enables support the rapid screening and confirmation of newly synthesized actives, reducing background noise and off-target by-products. In plant-scale operations, process engineers tell us the same features streamline scale-ups and reduce waste streams.

    Some large customers supply MBTDC to hands-on formulators who praise its compatibility with catalytic systems or polymer-bound reagents—feedback we take seriously in our own ongoing process improvement. Other end-users have reported fewer troubles with product shelf stability and fewer call-backs for trouble-shooting, which saves overhead and reduces time to market. These small reductions in operational friction add up over years.

    For research teams working on next-generation herbicides, MBTDC’s combination of heterocyclic reactivity and robust stability favors late-stage functionalization and high-purity actives. The same features matter for fine chemical applications, such as dye intermediates, where impurity content can visibly affect end-user product quality.

    In polymer modification or specialty surfactant work, MBTDC’s functional handle and consistent physical appearance ensure predictable downstream chemistry. Over years of manufacturing, shipping, and follow-up technical support, we’ve seen new uses for MBTDC emerge as process engineers and chemists realize its potential in steps beyond its original design, expanding its impact across multiple sectors.

    Continuous Improvement and Looking Ahead

    We invest time and effort in process optimization because long experience shows that a high-quality intermediate like MBTDC repays close control at every stage. Regular feedback loops—from shop floor to lab to field—sustain improvements in everything from analytical methods to equipment maintenance.

    Technical advances, such as introducing in-line process analytics or optimizing phase transfer catalysts, sharpen our control over yield and impurity profiles. Our chemists test modifications on pilot lines before transfer to full-scale tanks, and batch reviews after each campaign capture lessons for future runs. The culture of improvement supports both product reliability and our reputation as a supplier invested in customer success.

    Change in upstream chemical manufacturing, such as new environmental regulations or shifts in feedstock pricing, sometimes challenges our standard costs or raw material routes. We address these risks by qualifying alternates well before disruptions reach the market, relying on both data and sense from the most experienced hands on our team.

    The next few years stand to see MBTDC deployed in even more demanding regulatory environments and new molecule discovery programs. We’re prepared to keep adapting, focusing on the same hands-on rigor that kept our MBTDC a reliable piece of the modern chemical toolkit.

    Conclusion: Value Through Experience, Not Hype

    From our point of view as the actual manufacturer, MBTDC has earned its place through years of consistent feedback, lab testing, and daily plant operation. Its real practical value emerges not only from measured specs or a product data sheet, but from the experience-driven improvements, problem-solving, and continuous engagement with customers and regulators.

    Every drum, every lot, carries the stamp of hands-on chemical proficiency, built on real-world practice and a commitment to transparent, reliable supply. We don’t see MBTDC as just another chemical, but as an ongoing demonstration that close attention to process, people, and quality assurance delivers industry-leading results day after day.