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3-Thiopheneacetic Acid

    • Product Name 3-Thiopheneacetic Acid
    • Alias Thiophene-3-acetic acid
    • Einecs 217-993-5
    • 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

    111445

    Product Name 3-Thiopheneacetic Acid
    Synonyms 3-(Thiophen-3-yl)acetic acid
    Cas Number 1918-77-0
    Molecular Formula C6H6O2S
    Molecular Weight 142.18
    Appearance White to light yellow crystalline powder
    Melting Point 78-82°C
    Solubility Slightly soluble in water
    Density 1.33 g/cm3
    Pka 4.3 (carboxylic acid)
    Smiles OC(=O)CC1=CSC=C1
    Inchi InChI=1S/C6H6O2S/c7-6(8)4-5-1-2-9-3-5/h1-3H,4H2,(H,7,8)
    Storage Conditions Store at room temperature, in a tightly closed container

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

    Packing & Storage
    Packing The 100g package of 3-Thiopheneacetic Acid comes in a sealed amber glass bottle with a white screw cap and warning label.
    Shipping 3-Thiopheneacetic Acid is shipped in tightly sealed, chemical-resistant containers to prevent contamination and moisture ingress. The packaging complies with safety regulations for chemical transport. It is typically shipped at ambient temperature with appropriate hazard labels and documentation, ensuring safe handling during transit. Avoid exposure to excessive heat or direct sunlight.
    Storage **3-Thiopheneacetic acid** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizing agents. Protect it from moisture and direct sunlight. Ensure proper labeling and access only to trained personnel. Follow all appropriate safety and handling practices when storing this chemical.
    Application of 3-Thiopheneacetic Acid

    Applications of 3-Thiopheneacetic Acid in Industrial Manufacturing

    3-Thiopheneacetic Acid serves as a synthetic intermediate in several high-value industrial segments. Our manufacturing integrates extensive process experience and industry-specific compliance, enabling downstream customers to achieve precise formulation objectives and consistent production outcomes. Below, we detail the principal real-world application sectors and processing standards relevant to this raw material.

    1. Active Pharmaceutical Ingredient (API) Intermediate for CNS Agents

    Pharmaceutical companies utilize this material as a building block in the synthesis of central nervous system (CNS) active compounds, including certain anticonvulsants and antidepressants. Downstream producers must achieve precise control over purity and reactivity to avoid byproduct formation during drug synthesis. Regulatory compliance begins at the initial step of API manufacture, where this compound forms key side chains linked to the thiophene ring system. Batch records, impurity profiling, and trace-level quantification are essential for GMP validation, given that small variations in starting material quality influence both process yield and the impurity profile of final actives.

    Industry compliance standards

    • ICH Q7 GMP Guidelines for API Manufacturing
    • Current Good Manufacturing Practice (cGMP; FDA 21 CFR Parts 210 & 211)
    • Relevant USP, EP, JP monographs for intermediates
    • REACH Registration, Annex VIII (for substance registration dossier requirements)

    Typical usage ratio

    • 0.7–1.1 molar equivalents in condensation reactions, adjusted based on target purity and yield required for the specific CNS drug candidate synthesis

    Downstream process integration

    • Enters the synthetic route after initial aromatic ring substitution, commonly as a nucleophilic reagent in amide coupling or ring-extension processes
    • Quality-controlled feeding via automated reactors to minimize batch variability in final active substances

    Final product types

    • Pharmaceutical actives in CNS agent classes
    • Isolated advanced pharmaceutical intermediates packaged for subsequent coupling steps

    2. Organic Electronic Materials: OLED and OTFT Synthesis

    Manufacturers in the electronics sector employ this compound as a precursor for the preparation of polythiophene derivatives, which serve as semiconducting and charge-transport layers in organic light-emitting diodes (OLEDs) and organic thin-film transistors (OTFTs). The high-purity requirement targets color purity and efficiency in the final device’s emissive or active layer. Production lines employ rigorous in-process QC to ensure impurity levels remain consistently below specifications that could affect downstream polymerization and electronic performance. Integration protocols require precise timing to match throughput for multi-stage OLED production flows.

    Industry compliance standards

    • RoHS Directive (2011/65/EU) for restricted electronic substances
    • IEC 62474 (Material Declaration for Electronics)
    • Industry-specific SIR (Surface Insulation Resistance) and purity standards as specified by display manufacturers

    Typical usage ratio

    • 5–15% by weight as comonomer or side-chain group in monomer feedstocks for specialty semiconducting polymer synthesis; ratio varies based on desired orbital overlap and device voltage response

    Downstream process integration

    • Added to Grignard or Suzuki coupling reactions in main polymerization units
    • Processed as a monomer precursor in closed-system reactors to maintain moisture-free conditions vital for device-grade material quality

    Final product types

    • OLED display panels for mobile devices and TVs
    • Printable and flexible OTFT backplane arrays
    • Semiconducting inks for organic electronic components

    3. Agrochemical Intermediate for Selective Herbicide Synthesis

    Chemical producers in the agro sector deploy this compound for creating selective herbicides, anchoring thiophene-based molecules that interrupt weed-specific metabolic pathways. The downstream process involves acylation and cyclization steps to form bioactive scaffolds. Control of trace elemental and organic impurities is key; excessive residuals impact both field stability and regulatory clearance. Formulation chemists target compatibility with carrier systems and crop safety adjuvants, fine-tuning blends at the pilot scale before bulk production.

    Industry compliance standards

    • FAO/WHO Specifications for pesticide active ingredients
    • OECD Guidance for Industry Data Submissions on Agrochemical Intermediates
    • REACH SVHC review procedures relevant to environmental fate

    Typical usage ratio

    • 0.9–1.2 equivalents for condensation into target herbicidal actives; adjusted in response to degradation rate and field results during pilot testing

    Downstream process integration

    • Introduced at the initial heterocycle functionalization stage of herbicide active synthesis
    • Blended into batch reactors under controlled temperature and pH to maximize yield of intermediate scaffold

    Final product types

    • Selective broadleaf weed herbicides for cereal and oilseed crops
    • Registered technical concentrates for agrochemical formulators

    4. Dye and Pigment Intermediate for Specialty Colorants

    In the colorant sector, this raw material serves as an essential core for syntheses targeting high-performance dyes and pigments, particularly where electron-rich heterocyclic compounds confer improved lightfastness or solubility. Quality assurance focuses on chromophore integrity and metal impurity suppression, as even trace deviations impact the hue and migration resistance in downstream textile and ink products. Industrial blenders adjust input ratios based on target spectral absorption and batch-to-batch repeatability validated via standardized colorimetry protocols.

    Industry compliance standards

    • EN 71-3 (Safety of Toys: Migration of Certain Elements, as applicable to textile dyes and pigments)
    • REACH Annex XVII (Restrictions on certain dangerous substances for colorants in consumer products)
    • ISO 105-B02 (Color Fastness to Artificial Light for Industrial Dyestuffs)

    Typical usage ratio

    • 20–50% input for specialty dye synthesis; precise ratio adapted based on chromophore design and spectral requirements for the end-use application

    Downstream process integration

    • Charged into azo coupling or Friedel-Crafts acylation during base dye synthesis
    • Blended during final pigmentary state conversion and salt formation steps for enhanced process stability

    Final product types

    • Sulfur dyes and functional textile colorants
    • High-performance inkjet and industrial printing dyes
    • Specialty pigments for plastics and coatings sectors
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    Certification & Compliance
    More Introduction

    3-Thiopheneacetic Acid: Expert Insights from the Production Floor

    Our Approach to Manufacturing 3-Thiopheneacetic Acid

    Working in this industry for years, I see plenty of specialty chemicals come through the plant, but 3-Thiopheneacetic Acid holds a place of interest for a reason. Our process focuses on maintaining a high purity threshold, ensuring a consistent white crystalline powder, and adhering to the structure C6H6O2S. The CAS number matches industry databases, forging a direct line from our synthesis vessels to academic and industrial labs around the globe. We always measure to keep impurities—particularly halogen and heavy metal residue—well below commonly-accepted benchmarks.

    From agitation and temperature stages to specialized cleaning protocols for glassware, precision underpins every shift. Skilled operators keep a detailed record at each step—raw material input, reaction completion, filtration, washing, drying, and grinding. Our model follows standardized procedures, using tried and true reagents coupled with closed-loop temperature controls to limit side reactions. Material consistency comes from experience and tight process controls, not luck.

    Key Physical and Chemical Specifications

    Purity always stands above 98% according to the latest lot analyses, and we monitor water content and residue on ignition at each batch’s close. The acid’s structure features a thiophene ring bonded to an acetic acid group, which imparts distinct reactivity for further transformation. Most of the material leaves our site as fine powder, although certain customers working on pilot or custom syntheses request coarser or slurried forms. Melting point checks confirm batch uniformity; we look for values in the 82–85°C margin, and deviations prompt a full quality review.

    Chromatographic identification and trace impurity monitoring run as routine. For researchers scaling toward biologically active compounds or advanced materials, confirmation at these steps preserves the downstream reliability. While many suppliers promote broad technical specs, we support scientific work by offering detailed batch records, which facilitate troubleshooting in laboratory applications.

    Why 3-Thiopheneacetic Acid Matters

    From a chemical manufacturer’s view, demand for 3-Thiopheneacetic Acid has grown in sync with the rise of materials science and pharmaceutical research. As a core building block, this material finds its way into the synthesis of new agrochemicals, complex organic intermediates, and, most impressively, novel heterocyclic drugs. Its position as a bridge between the aromatic thiophene ring and the carboxylate functionality gives project chemists flexibility for various coupling, halogenation, and substitution strategies.

    Several development projects depend on it—heterocyclic core building for antitumor research, intermediate synthesis for cross-coupling to more elaborate molecules, and as a precursor for fluorescent probes or polymer backbone modification. Our team collaborates with R&D partners in scaling reactions from a few grams in a research flask to multi-kilogram reactor runs. Lessons learned on the small scale translate directly, trimming waste and cutting cycle times.

    Some clients run custom projects involving amide coupling or modifications to the carboxylic acid group. For these applications, side product contamination or unwanted oxidation shortens routes and erodes product yield. We tailor input checks to this, leveraging years of experience, and ensure carefully controlled environments and stainless steel or glass-lined reactors for sensitive transformations. Recognizing how one impurity can affect polymer characteristics or structure–activity relationships in a medicinal chemistry program has shaped how we tune both equipment and process.

    What Sets 3-Thiopheneacetic Acid Apart from Related Acids

    Many customers ask us about similarities and differences between 3-Thiopheneacetic Acid and other chemical acids or thiophene derivatives. Structural analogs—such as 2-thiopheneacetic acid—can shift reactivity and, consequently, the behavior in downstream reactions. The substitution position on the thiophene ring makes an impact: in our product, the attachment at the 3-position means different electronic distribution and steric profile compared to the isomeric 2-acid. That influences coupling efficiency and side reaction profiles in both academic and commercial labs.

    Competitors sometimes propose benzoic or furan acetic acids as alternatives. Our long-term buyers have shown that such substitutions rarely provide the exact properties necessary for electron-rich or aromatic target molecules. The sulfur atom in thiophene modulates both solubility and stability in final compounds—benefits not easily matched by basic aromatic or aliphatic acids. For conjugated polymer or complex organic building blocks, the reactivity of the 3-thiophene moiety stands out. Projects in advanced electronics, OLED screens, and new biological sensors reflect this utility, drawing on the precise physical and chemical attributes our manufacturing delivers.

    Chemists often worry about trace metal contamination or unwanted halide impurities altering catalyst performance or downstream product color. We have developed proprietary filtration and purification steps that consistently restrict these impurities to below recognized research thresholds. During solvent stripping and post-drying, our systems pick up minor residues and physical flaws, pushing consistency to scientific-grade expectations.

    Interaction with Researchers and Process Chemists

    When a research group calls us about a persistent reaction problem or solubility issue, we take it personally. Decades of cumulative dialogue with laboratory chemists and production engineers have shaped our approach. Sharing analytical profiles and keeping communication open speeds troubleshooting and directly improves success rates for customers scaling to pilot or production stages. Many of our staff stay on top of recent developments in synthesis and analysis, bringing an understanding of high-purity needs for solid-state, solution, or in situ applications.

    Material tracing, unique batch records, and secure packaging support compliance and traceability for regulated sectors—pharmaceuticals, advanced agrochemicals, and device manufacturing. Each batch receives core analytics and packing under inert conditions, ensuring stability from loading at the plant through to customer receipt. Buyers often voice relief that their labs do not have to run extra purification cycles, freeing up precious time to push projects forward.

    Operational Experience: Realities of Scaling Up

    Early production used glassware and open reactors, suitable for low volumes. Over time, we invested in larger jacketed reactors, automated feeding, and in-line analytical controls. These upgrades eliminated common bottlenecks—thermal runout, unwanted foaming, or excessive solid formation in transfer lines. Having dealt firsthand with these headaches, we consistently monitor critical variables, pause and recalibrate if variances surface. Making improvements based on real-world plant feedback, rather than abstract modeling, means our operation stays lean and issues are handled before delivery, not after.

    Custom synthesis for industrial users sometimes forces changes in mixing speeds, reactor batch size, and drying times. Adjustment of these parameters directly impacts powder consistency and impurity levels. Bulk orders, for example, test plant capacity, pushing us to maintain clear logistics and build-in contingency steps. Experienced technicians spot trouble signs before they escalate, drawing on pattern recognition honed across countless runs. This human expertise, coupled with advanced digital monitoring, offers a robust backbone for every order that leaves our warehouse.

    Keeping supplies steady takes ongoing supply chain management with trusted partners. Raw thiophene, acetic anhydride, and essential purification solvents remain subject to global market pressure, so we keep stocks healthy and build relationships directly with original chemical producers. Overheads such as solvent recovery, emissions control, and process wastewater routinely get attention, minimizing environmental footprint and staying in line with regulatory standards.

    Advantages for Formulation Scientists and Product Developers

    Specialty acid derivatives, especially 3-Thiopheneacetic Acid, help technical teams overcome bottlenecks when moving from concept to testable prototypes. For OLED and sensor applications, the exacting substitution at the 3-position provides reliable electron-donating characteristics without introducing instability. This means researchers access predictable performance in thin-film experiments or solution-processed devices, especially where minor impurities would disrupt uniform electrical properties.

    For those exploring biological activity, the balance between aromaticity, sulfur presence, and carboxylic acid group offers a launchpad for further derivatization. Experienced medicinal chemists, working across universities and development companies, speak directly about how our product provides cleaner coupling yields and manageable downstream workups. Using our material often means fewer purification steps post-reaction and lower byproduct counts in chromatography. These time savings in a competitive research environment give teams room to dig deeper into SAR studies or scale a promising hit toward preclinical evaluation.

    Polymer synthesis teams benefit from low batch-to-batch variation. Minor changes in acid content, moisture, or physical state can knock an entire copolymerization run off-target. Consistent powdering and packaging practices reduce charge buildup, avoid bridging in feed hoppers, and speed up integration into solvent systems. Our practice of including batch certification reports guarantees confidence for every project, from concept validation to final manufacturing scale-up.

    Addressing Common Production and Quality Challenges

    The market for thiophene derivatives brings challenges. Bulk synthesis increases thermal load, raising side product risk. We’ve refined the process with real operator feedback, reworking coolant flow rates, recrystallization protocols, and introducing inline pH monitoring to flag deviations instantly. Scaling micro-lab syntheses to industrial reactors presents new hurdles—mixing efficiency, solvent partitioning, temperature gradients—all handled through repeated iteration and hands-on oversight.

    Compounding and blending create another challenge. 3-Thiopheneacetic Acid reacts sensitively to pH and strong oxidants; our plant maintains strict zone separation and regular equipment checks to block cross-contamination with basic or oxidative reagents used in nearby lines. Cleaning validation, monitored by trained QA staff, keeps the system running with predictable output. Real solutions result not from theoretical planning, but from day-to-day experience correcting instrument drift, responding to actual deviations, and working closely with partners on concerns ranging from laminar mixing to storage stability.

    Our packaging team inspects each container after filling—nicks, seal strength, and liner integrity get a direct check before loading onto trucks. Humidity and temperature swings in shipping demand robust containment; we use proven materials and test periodically to confirm stability, drawing on feedback from global customers about transit duration, climate, and in-field handling.

    Continuous Improvement through Applied Learning

    Continuous improvement sits at the core of our manufacturing identity. Operator training brings old hands together with new recruits, encouraging knowledge transfer around subtle process details—how powder texture changes with minor humidity shifts, what to do if a batch foams unexpectedly, and how to identify the sweet spot in drying curves for maximum purity recovery. Investments in process automation give us fresh ways to fine-tune batch output, but insights from real production remain critical.

    We encourage open feedback from every customer and internal review. Adding new testing methods or analyzing batch records for patterns has shaped multiple iterations in our process, recommending raw material sources or swapping out underperforming filters. In one instance, identifying recurring trace contamination from a gasket material led us to overhaul a sealing protocol, clearing up an impurity traced back to just a handful of seals—a fix invisible to outsiders, transformative in outcome.

    Quality audits run several times a year, involving everything from incoming chemical ID and stability review to finished product evaluation. Issues raised aren’t set aside—they drive root-cause investigations and often become improvement projects, whether introducing new analytical checkpoints or redesigning storage spaces for peak climate control. Our team doesn’t shy away from tough questions or seek to mask problems; direct engagement with the facts makes us better with every production cycle.

    Supporting the Future of Research and Industry

    Interest in heterocyclic chemistry and sulfur-containing building blocks continues to climb. As material science, pharmaceuticals, and specialty polymers expand, the pressure on suppliers and manufacturers alike sharpens. We understand that reliability and traceability of 3-Thiopheneacetic Acid serve not only today’s research but tomorrow’s industrial scale-up. By controlling every aspect of synthesis, handling, and distribution, our plant lets researchers and process chemists focus on innovation—not troubleshooting material quality.

    We watch trends in green chemistry, reactivity optimization, and product life cycle analysis with a practitioner’s eye. Decisions about solvent replacement, waste mitigation, and packaging design draw on hard-won experience managing both compliance and practical operations on a day-to-day basis. Attention to detail, personal accountability, and a willingness to innovate based on direct evidence combine to give every kilogram of 3-Thiopheneacetic Acid leaving our site the reliability research and industry demand.

    Never content to rest on established practice, we maintain close relationships with scientific collaborators and industrial manufactories. Real dialogue, open records, and responsiveness define our customer service. Our way forward combines solid chemical know-how with hands-on attention to the technical roadblocks our customers face, helping bring ideas off the bench and into practical, industrial use.