4-ethoxythiophene-3-carboxylic acid CAS 70438-00-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 70438-00-5 |
| Molecular Formula | C7H12O3S |
| Molecular Weight | 176.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-ethoxythiophene-3-carboxylic acid (CAS 70438-00-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C7H12O3S. Molecular weight: 176.23 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C7H12O3S |
| Molecular Weight | 176.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1977 |
| Sulfur Atoms | 1 |
Related ethoxythiophene Standards
- 3-Ethoxythiophene-2-carboxylic acid (CAS 139926-23-1)
- 4-Ethoxythiophene-2-carboxylic acid (CAS 917980-53-1)
- 4-Ethoxythiophene-3-carboxamide (CAS 71050-41-4)
- Methyl 3-Ethoxythiophene-2-carboxylate (CAS 139926-22-0)
- Methyl 4-ethoxythiophene-2-carboxylate (CAS 1707391-85-2)
- 3-Ethoxythiophene-2-carbohydrazide (CAS 175137-40-3)
- Methyl 4-ethoxythiophene-3-carboxylate (CAS 1823338-68-6)
- 3-Ethoxythiophene-2-carbonyl chloride (CAS 139926-24-2)
Recommended Standards
- 4-acetyl-1λ⁶-thiane-1,1-dione (CAS 473254-30-7)
- 4-Methyl-2H-chromene-2-thione (CAS 25624-32-2)
- 4-(Thiophen-3-yl)phenol (CAS 29886-67-7)
- 1-benzyl-1,9-diazaspiro[5.5]undecane (CAS 1100748-68-2)
- 4-Chlorophenol-d4 (CAS 344298-84-6)
- 28788-62-7 Benzoyl chloride, 4-butyl- 4-Butylbenzoyl chloride EINECS 249-224-2 (CAS 28788-62-7)
- 4-Amino-5-iodo-2-(trifluoromethyl)benzonitrile (CAS 852569-35-8)
- (E)-Ethyl 3-(4-bromo-2-fluorophenyl)acrylate (CAS 581778-88-3)
- Rocuronium Impurity 32 (CAS CATO-C4X-124232)
- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com