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2,3-Dimethoxy-5-Sulphamoylbenzoic Acid

    • Product Name 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid
    • Alias Methyl Bendrofluazide
    • Einecs 244-943-7
    • 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
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    Specifications

    HS Code

    105089

    Product Name 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid
    Molecular Formula C9H11NO6S
    Molecular Weight 261.25 g/mol
    Cas Number 27277-45-6
    Appearance White to off-white solid
    Melting Point 210-213°C
    Solubility Soluble in water and methanol
    Purity Typically ≥98%
    Storage Conditions Store at 2-8°C, protected from light and moisture
    Boiling Point Decomposes before boiling
    Synonyms 2,3-Dimethoxy-5-sulfamoylbenzoic acid
    Iupac Name 2,3-dimethoxy-5-sulfamoylbenzoic acid
    Hazard Statements May cause irritation to skin, eyes, and respiratory tract

    As an accredited 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White, tightly sealed 100g HDPE bottle with tamper-evident cap; labelled with chemical name, CAS number, hazard symbols, and batch details.
    Shipping 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid is shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. Handle with appropriate safety measures. Packages comply with relevant chemical transport regulations, including labeling and documentation. Typically shipped in small quantities for laboratory use, requiring prompt delivery to maintain stability and quality.
    Storage 2,3-Dimethoxy-5-sulphamoylbenzoic acid should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing agents. Protect from light and moisture. Proper labeling and secondary containment are recommended to avoid accidental exposure or spills. Personal protective equipment should be used when handling this chemical.
    Application of 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid

    Applications of 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid in Industrial Manufacturing

    2,3-Dimethoxy-5-sulphamoylbenzoic acid serves as a specialized intermediate and additive across select industrial verticals. Its molecular structure and chemical stability enable critical roles in synthesis and formulation for key market segments. As a manufacturer, we directly support customer production through integrated supply and technical guidance in established downstream applications.

    1. Pharmaceutical Intermediates for Diuretic Synthesis

    This product functions as a dedicated intermediate in the multi-step synthesis of sulphonamide-based diuretics, especially for high-purity formulations. Pharmaceutical factories utilize it when synthesizing active pharmaceutical ingredients that require precise control of sulphonamide positioning and methoxy protection during structural assembly, supporting both generic and reference listed drug (RLD) productions. Strict route design mandates introduction of this intermediate at a late stage, minimizing hydrolytic degradation and ensuring high final yield.

    Industry compliance standards

    • ICH Q7A Good Manufacturing Practice (GMP) for APIs
    • United States Pharmacopeia (USP) for process intermediates
    • FDA CFR Title 21, Part 210 & 211
    • European Pharmacopoeia Monographs (where applicable)

    Typical usage ratio

    • 0.6–1.2 molar equivalents per synthetic batch, adjusted based on the target yield and stoichiometry of downstream reactions

    Downstream process integration

    • Enters post-condensation stage as a building block for the benzenesulfonamide moiety, before final cyclization or activation
    • Integrated through solvent-phase reaction under controlled temperature (70–110°C)

    Final product types

    • Bulk and finished tablets of thiazide diuretics
    • Injectable formulations containing sulphonamide actives
    • API-grade sulphonamide stocks

    2. API Process Development in Custom Synthesis (CDMO/CMO)

    Custom synthesis providers contract this raw material as a project-specific intermediate for investigational new drugs (INDs) and structural analog synthesis within contract manufacturing (CDMO/CMO) operations. CDMOs leverage batch-to-batch consistency to scale up pilot and commercial production of compounds with sulfonamide backbones. This application involves detailed reaction monitoring and impurity profiling at each sequence to fulfill sponsor requirements.

    Industry compliance standards

    • ICH Q11 Development and Manufacture of Drug Substances
    • GMP Annex 1 (EU) for controlled environments
    • ISO 9001:2015 Quality Management
    • DMF (Drug Master File) support for regulatory submission

    Typical usage ratio

    • 0.5–1.0 equivalent per target intermediate step; levels optimized per process route and impurity tolerance

    Downstream process integration

    • Charged directly to the reaction vessel during controlled sulfonamide coupling reactions
    • Utilized at gram to kilogram scale during process validation, tech transfer, and scale-up

    Final product types

    • Phase I–III clinical trial materials with sulphonamide structures
    • Regulatory submission samples
    • Small molecule API libraries for pharmaceutical R&D

    3. Fine Chemical Synthesis for Dye Intermediate Production

    This material acts as a key functionalized benzene ring substrate in the synthesis of complex aromatic sulfonate intermediates for specialty dye manufacturing. Fine chemical plants apply it in highly regulated aromatic substitution reactions to introduce controlled sulfonamide and methoxy functionalities required for dyefastness and solubility of the end product. The controlled introduction of both methoxy and sulphonamide groups impacts shade depth and fixative properties in the resultant dyes.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for chemical safety
    • ISO 14001 Environmental Management for waste and emission controls
    • Internal product stewardship procedures

    Typical usage ratio

    • 10–20% by weight of total aromatic substrate content, depending on target chromophore complexity

    Downstream process integration

    • Fed into nitration or reduction reactors as a functionalized precursor during early-stage synthesis
    • Supports sequential diazotization or coupling in aqueous and non-aqueous solutions

    Final product types

    • High-performance disperse and reactive dyes for polyester and polyamide textile applications
    • Water-soluble dye intermediates for ink formulations

    4. Specialty Agrochemical Intermediate Manufacturing

    Agrochemical producers utilize this compound as a highly selective intermediate for the synthesis of crop protection agents, primarily those targeting enzymatic pathways in weeds or pests. Its electron-donating methoxy groups and the sulphonamide function form critical ligand sites for later-stage condensation with heterocycles or aliphatic chains. Precise input at specific reaction stages can enhance active ingredient stability and bioavailability, important for meeting regulatory residue specifications.

    Industry compliance standards

    • ISO 9001:2015 for processing quality systems
    • Regulation (EC) No 1107/2009 for Agrochemical Registration (EU)
    • US EPA Pesticide Registration, 40 CFR Part 152
    • OECD Testing Guidelines for agrochemical intermediates

    Typical usage ratio

    • 5–15% w/w in the intermediate synthesis reaction mass, modulated by seasonal batch scale and desired product purity

    Downstream process integration

    • Introduced as a ring-functionalized precursor during early alkylation or acylation stages of synthesis
    • Participates in stepwise formation before final coupling or formulation into technical concentrates

    Final product types

    • Active ingredients for herbicide and fungicide technical concentrates
    • Precursor compounds for patent-protected agrochemical blends

    5. Analytical Reagent and Chemical Reference Material Production

    Specialty chemical firms and reagent kit manufacturers source this compound for developing analytical standards, calibration solutions, and reference materials. Its purity allows trace-level quantification and identification protocols for quality control in pharmaceutical, food, and environmental testing laboratories. Accurate weighing and solution preparation depend on certified impurities and trace element documentation per application needs.

    Industry compliance standards

    • ISO 17025 Laboratory Certification for reference materials
    • ISO Guide 34/ISO 17034 for certified reference material (CRM) production
    • USP and Ph. Eur. for reference substances

    Typical usage ratio

    • 0.01–0.1 mg/mL in calibration solutions, with adjustment for detection method sensitivity and instrumental requirements

    Downstream process integration

    • Diluted into high-purity solvents for calibration curve preparation
    • Packaged as single-use reference vials or bulk standard solutions

    Final product types

    • Certified reference materials for GC/HPLC analysis
    • Analytical reagent kits for laboratory validation
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    Certification & Compliance
    More Introduction

    2,3-Dimethoxy-5-Sulphamoylbenzoic Acid: Our Experience, Applications, and What Sets It Apart

    Grounded Innovation: Developing 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid

    In our decades serving the chemical industry, we’ve seen a fair share of specialty benzoic acids come and go, but few capture the sweet spot between synthetic flexibility and functional specificity like 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid. Our journey with this compound didn’t start out as some high-level R&D directive. We began with a client's stubborn challenge: the need for a benzoic acid derivative that withstands aggressive reaction conditions without falling apart and offers distinct substitution patterns for downstream chemistry. What followed was a series of hands-on development sprints. From small-scale flask trials with stubborn methoxylation yields to perfecting sulphamoylation without excessive byproduct formation, each production run has shaped the efficient and reliable synthesis protocol we use today.

    Reliable Structure: What You Get with Our Grade

    Every batch of 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid we produce reflects the cumulative lessons learned from laboratory exploration and scaling up. The molecular backbone, C9H11NO6S, forms a solid platform for functional group manipulation and process reliability. Each step from raw feedstock selection, controlled temperature profiles for methoxyl addition, to final purification, gets fine-tuned to minimize impurities like incomplete methylation or residual sulfonation reagents. We regularly analyze our product for assay (typically exceeding 99%), moisture (kept below 0.5%), and specific organic impurities that matter most for the processes our customers run. The end result features consistent crystalline appearance, low ash, and high solubility in many polar organic solvents, which users often find makes their own preparation and isolation work move much smoother.

    Built for Synthesis: Why Formulators Turn Here

    For those in pharmaceutical research, agricultural synthesis, and advanced materials, a substituted benzoic acid is more than a raw material—it’s the very foundation upon which target molecules stand or fall. From bench chemists at nimble startups to well-established process development teams, the feedback we’ve heard centers on versatility. The twin methoxy substituents on the 2 and 3 positions contribute steric shielding and electronic modulation, lending the molecule both a measure of oxidative stability and reactivity in esterification, amidation, and cross-coupling reactions. Meanwhile, the 5-sulphamoyl group opens up downstream possibilities for building sulphonamides and related motifs—important for medicinal and crop chemistry. Researchers point out that this pattern of substitution lets them approach reaction design with less worry about regioisomer complications that often plague more symmetrical benzoic acids.

    What Sets It Apart: Not Just Another Benzoic Acid

    Chemically speaking, it’s easy to lump 2,3-Dimethoxy-5-Sulphamoylbenzoic Acid in with a slew of benzoic acid derivatives, but the details make all the difference. In the lab, we’ve run parallel syntheses using isomers and close cousins. Ortho- and para-methoxy variants sometimes fall short, either dissolving sluggishly, leaving more tarry byproducts, or lacking the right balance for functionalization. Swap out sulphamoyl for sulfonic acid and solubility diminishes, sometimes sparking filter plugging or recrystallization headaches. Trimethoxybenzoic acids sometimes over-stabilize the aromatic ring, impeding further reactivity for advanced coupling steps.

    Our direct customers—those responsible for designing and executing multistep syntheses—tell us they stick with our 2,3-dimethoxy-5-sulphamoyl variant precisely because it threads this needle. Its selective reactivity helps avoid side-reactions that can balloon raw material costs and timeline overruns when scaling up. Medicinal chemists using it as a precursor for targeted enzyme inhibitors have documented fewer late-stage ‘dead ends’ compared to more heavily substituted benzoic acids. In agricultural chemistry, the sulphamoyl group offers a springboard to design more water-compatible intermediates, which can trim solvent usage or simplify purification downstream. All these day-in, day-out details matter far more to actual business outcomes than abstract performance claims.

    Real-World Challenges: Quality, Reproducibility, and Safety

    Many of the day-to-day challenges we face as a manufacturer arrive not in the glassware, but through email or the shipping dock. Customers’ biggest questions almost never touch on the theoretical; it’s about batch-to-batch consistency, long-term storage, and safe, predictable process integration. Our own chemists understand that a single batch with offspec color or unusually high residual solvent can grind whole pilot plant runs to a halt. Because of that, we don’t just ship based on lot numbers and certificates of analysis. Instead, every kilogram goes through additional spot checks: melt point confirmation, HPLC purity, water content, and—typically overlooked by many processors—micro particulate examination to prevent downstream filtration fouling.

    On the safety end, we maintain direct oversight from raw material check-in at our facility through to final packaging. We manage everything under strict exposure and containment standards to protect our own staff and, by extension, your operators. Handling 2,3-dimethoxy-5-sulphamoylbenzoic acid presents fewer hazards than some more volatile or dust-prone benzoic acid relatives, but we still ensure the dust fraction stays minimal and labeling remains clear so that users face no surprises handling solid or dissolved product forms.

    Comparison to Other Substituted Benzoic Acids: Experience from the Bench

    Stack 2,3-dimethoxy-5-sulphamoylbenzoic acid side-by-side with typical options like simple benzoic acid, isophthalic acid, or p-aminobenzoic acid, and the operational differences soon appear. Plain benzoic acid puts up little functional resistance; as a result, selectivity during derivatization falls short, and downstream chemistry gets bogged down managing side-products. Conventional p-aminobenzoic acid offers access to classic amide coupling, but its increased reactivity toward oxidation or acylation can mean more protection and deprotection steps, ultimately driving up cost and shrinking yields.

    What we see from regular users is that our product often offers a happy midpoint. It’s more robust through oxidative conditions, responds predictably to both acidic and basic workups, and lets reaction optimization focus on yield and purity, not just suppressing byproducts. Its unique pattern of electron-donating and electron-withdrawing groups helps create more manageable reactivity when building out more complex scaffolds. Instead of chasing after per-reaction workarounds for poor solubility or ambiguous selectivity, formulators who lean into our 2,3-dimethoxy-5-sulphamoyl version spend their time improving real process efficiency.

    Supply-Chain Certainty: In-House Production, Local Sourcing

    Manufacturing specialty chemicals isn’t a matter of ordering some off-the-shelf intermediary and relabeling it for export. Our team sources all key raw materials directly, then manages every step: process scale-up, quality benchmarking, and continuous review of waste minimization. We don’t rely on contract producers or external tollers, so every client who’s responded in post-delivery surveys mentions both reduced specification drift and lower uncertainty during procurement cycles. Our production runs happen under local regulatory oversight with open doors for customer audits—providing deep traceability and data-backed confidence at every step from initial batch to packaged shipment. That’s something we view as an ethical baseline, not a bonus marketing point.

    Regulatory Confidence, Scientific Understanding

    Recent years have brought heightened scrutiny to specialty benzoic acid derivatives, both in terms of purity benchmarks and their role in targeted chemical processes (pharmaceuticals, crop science). We closely monitor not only global purity regulations but also evolving guidance on byproducts, solvent residues, and worker exposure limits. We actively participate in relevant industry meetings and supply the full analytical dossiers required for clients under strict regulatory compliance regimes. These responsibilities come from a basic truth: a poorly controlled intermediate can undermine not just a single synthesis, but entire regulatory submissions if unrecognized impurities slip through.

    Process Insights: From Flasks to Kilograms

    Small-scale synthesis in a fume hood looks very different than a full-batch process in our main plant. Early on, our technicians struggled with getting the final product to crystallize smoothly after sulphamoylation—yielding waxy residues and inconsistent particle size. Through a series of pilot runs, we tuned up solvent choices, agitation rates, and purification conditions until the product’s filterability fell in line without losing overall yield. We now rely on solvent recovery and closed filtration systems to minimize operator exposure and keep environmental impact in check.

    In actual use, we’ve worked alongside customers at both R&D and plant scales as they introduce 2,3-dimethoxy-5-sulphamoylbenzoic acid into new synthetic schemes. Teams running stepwise functionalization projects highlight improvements in both time and material use. Final stepcrystallizations produce cleaner endpoints, batch yields improve because of reduced byproduct formation, and, on some occasions, waste and effluent are trimmed by avoiding excessive washing or neutralization steps. From our vantage point, these are tangible ways our direct involvement with making, testing, and supplying this compound pays off for clients on the ground.

    End-Use Stories: Practical Chemistry, Not Just Possibility

    Feedback direct from users shapes how we think about product value. Pharmaceutical companies experimenting with new anti-inflammatory molecules report that our 2,3-dimethoxy-5-sulphamoylbenzoic acid allows for high-purity active intermediates right from early-stage medchem through process development. Agricultural chemists cite improvements in their pipeline of selective herbicide active ingredients, noting fewer complications during heterocycle-forming steps and product workup. For every theoretical application, a half-dozen real-world users log in with comments on how an ease in filtration, less solvent load, or more predictable behavior during scale-up meant the difference between months lost troubleshooting and rapid next-phase approvals.

    Potential Improvements and Ongoing Problem-Solving

    Despite our dedication to process fine-tuning, each feedback loop from pilot plant to final application teaches us new lessons. Some users encounter issues with solid handling in high-throughput automated systems. We’re currently working to fine-adjust our granulation methods and packaging options to better align with bulk handling requirements. A few large-scale users share concerns over fines causing dusting—prompting us to explore antistatic treatments and reconsider drum liner materials for long-haul shipments.

    Another active area involves supporting life cycle analyses for customers who need to demonstrate the environmental profile of the specialty chemicals used in their products. We’re piloting work on alternative greener solvents for key methylation steps, backed by internal and third-party validation to ensure neither yield nor purity take a hit. This step aims to reduce both emissions and operator risk.

    Value Through Direct Partnership

    The most substantial difference between sourcing 2,3-dimethoxy-5-sulphamoylbenzoic acid from our facility rather than through indirect channels comes down to partner-level support. Chemical manufacturing at this level is still as much about trust and feedback as about analytical chemistry. By engaging directly with those actually running the end chemistry, we can reformulate, repack, or tweak process parameters tightly in response to data—not simply leave customers to adapt or risk product drop-ins.

    Many suppliers offer broad technical data but little follow-through. Our staff include veteran process chemists who join video calls or even travel for troubleshooting when a customer’s process dev or pilot plant gets tripped up by a subtle variable (crystallization kinetics, filtration, or a solvent effect). Our experience is that most recurring production headaches actually stem from small lapses in specification or packaging detail, not from flashy issues like synthesis design. That on-the-ground support means customers get not just a chemical, but a full-spectrum solution ready for rigorous, evolving development needs.

    Lessons From Real Users: Turning Feedback Into Progress

    Our habit of soliciting and carefully reviewing every feedback report goes beyond customer relations. With benzoic acid derivatives, small changes in process water, solubility, or trace impurity profile can cascade down an entire project timeline. Clients make it clear they care less about theoretical maximum yield and more about practical, reproducible performance under pressure. We’ve implemented real-time tracking for delivery and order status, direct-to-chemist hotline support, and batch reservation for project-based clients. These details often spell the difference between a run-of-the-mill chemical order and a long-term client partnership.

    We’ve seen projects in pharmaceutical ingredient development cut weeks off development cycles by leveraging our in-house analytical infrastructure, rapid sample turnaround, and willingness to resequence deliveries to match accelerated timelines. Agricultural formulation projects have reduced scale-up hurdles through custom particle grading and assistance incorporating product seamlessly into their pilot and manufacturing lines.

    Conclusion: Clarity Through Expertise

    Producing 2,3-dimethoxy-5-sulphamoylbenzoic acid in a way that supports both innovation and reliability requires more than the right lab notebook protocol. It calls for persistent attention to handling, reproducibility, batch testing, and a steady dialogue with those who make use of it on the ground. In our experience, keeping chemists and plant operators in the loop at every stage helps both us and the end user. This compound’s broad role in intermediates for pharmaceuticals, crop science, and materials means any advantage in reactivity, solubility, or ease of purification carries straight through into real process gains. With each new project, our team aims to turn this well-earned hands-on knowledge into better solutions and lasting industry partnerships.