4-Methyl-3-thienylboronic acid
4-Methyl-3-thienylboronic acid (CAS 177735-11-4), molecular formula C5H7BO2S, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- (4-Methylthien-3-yl)boronic acid,(4-Methylthiophen-3-yl)boronic acid,(4-Methylthiophen-3-yl)dihydroxyborane,4-Methyl-3-thiopheneboronic acid

| Molecular weight | 141.98 |
|---|---|
| Empirical formula | C5H7BO2S |
| Assay | ≥95% |
| Storage temperature | 2-8°C |
| Application | Reactant for preparation of biologically active molecules:• Selective sphingosine phosphate receptor antagonists1• Biarylimidazole derivatives as H+/K+ ATPase inhibitors2• Benzothienopyrimidinones as inhibitors of human protooncogene proviral insertion site in moloney murine leukemia virus kinases3Used in:• Synthesis of arene-functionalized fullerenes via rhodium-catalyzed hydroarylation4• Suzuki cross-coupling reactions5 |
| Melting point | 138-144 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Methyl-3-thienylboronic acid?
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4-Methyl-3-thienylboronic acid (CAS 177735-11-4), molecular formula C5H7BO2S, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 4-Methyl-3-thienylboronic acid does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Methyl-3-thienylboronic acid in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 4-Methyl-3-thienylboronic acid?
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4-Methyl-3-thienylboronic acid has CAS number 177735-11-4 and molecular formula C5H7BO2S. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 4-Methyl-3-thienylboronic acid?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 4-Methyl-3-thienylboronic acid ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 4-Methyl-3-thienylboronic acid be stored?
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Store 4-Methyl-3-thienylboronic acid in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 4-Methyl-3-thienylboronic acid used for?
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4-Methyl-3-thienylboronic acid is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 4-Methyl-3-thienylboronic acid?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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