4-Methoxythiophene-2-carboxylic Acid CAS 77133-27-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 77133-27-8 |
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Methoxythiophene-2-carboxylic Acid (CAS 77133-27-8) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H6O3S. Molecular weight: 158.18 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H6O3S |
| Molecular Weight | 158.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Sulfur Atoms | 1 |
Related Methoxythiophene Standards
- 2-Methoxythiophene-3-carboxylic acid (CAS 71154-29-5)
- 3-Methoxythiophene-2-carboxylic acid (CAS 60166-83-8)
- 4-Methoxythiophene-3-carboxylic Acid (CAS 71050-40-3)
- 4-Methoxythiophene-2-boronic acid (CAS 1321901-82-9)
- 3-Methoxythiophene-2-boronic acid (CAS 162607-22-9)
- (E)-3-methoxythiophene-2-carbaldehyde oxime (CAS 1824827-05-5)
- 3-Methoxythiophene-2-carboxamide (CAS 78031-17-1)
- 4-Methoxythiophene-3-carboxamide (CAS 65369-29-1)
Recommended Standards
- 4-Mercapto-1H-imidazole-5-carbohydrazide (CAS 58413-35-7)
- 4-HYdroxy-thiophene-2-carboxylic acid methyl ester (CAS 5118-04-7)
- 4-Methyl-1,2,3-thiadiazole-5-carbohydrazide (CAS 75423-15-3)
- (S)-Benzyl 2-((2-chloro-N-ethylacetamido)methyl)pyrrolidine-1-carboxylate (CAS 1354016-80-0)
- 2-(Methylthio)-3H-imidazo[4,5-c]pyridine (CAS 7397-69-5)
- 1-Bromo-4-(4-(trifluoromethyl)phenoxy)benzene (CAS 137736-26-6)
- 2,2'-Diiodo-9,9'-spirobi[fluorene] (CAS 790674-48-5)
- (1E)-1-{6-chloroimidazo[2,1-b][1,3]thiazol-5-yl}-N-(3-chlorophenyl)methanimine (CAS 241132-45-6)
- 4-Bromo-3-methylpicolinaldehyde (CAS 886372-15-2)
- Semaglutide impurity 193 (CAS CATO-C4X-2226193)
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