5,6-Dihydro-4H-cyclopenta[b]thiophene-3-carboxylic acid CAS 19156-53-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 19156-53-7 |
| Molecular Formula | C8H8O2S |
| Molecular Weight | 168.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dihydro-4H-cyclopenta[b]thiophene-3-carboxylic acid (CAS 19156-53-7) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C8H8O2S. Molecular weight: 168.21 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C8H8O2S |
| Molecular Weight | 168.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 1 |
Related Dihydro Standards
- 5,6-Dihydro-4H-cyclopenta[c]thiophene-1-carboxylic acid (CAS 1369339-87-6)
- 2,3-dihydro-1$l^{6}-benzothiophene-1,1-dione (CAS 14315-13-0)
- 5,6-Dihydro-4H-cyclopenta[c]thiophene-5-carboxylic acid (CAS 160502-05-6)
- 5,6-Dihydro-4H-cyclopenta[b]thiophene-5-carboxylic acid (CAS 185515-12-2)
- 1,3-dihydro-2$l^{6}-benzothiophene-2,2-dione (CAS 2471-91-2)
- 2,3-Dihydro-1,4-benzodioxine-6-thiol (CAS 247228-28-0)
- 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylic acid (CAS 40133-06-0)
- 6,7-Dihydro-4H-thieno[3,2-c]pyran-2-carbaldehyde (CAS 623564-80-7)
Recommended Standards
- (2-Fluoro-5-isopropylphenyl)methanol (CAS 1896410-62-0)
- 6,6-dimethylthieno[2,3-c]furan-4-one (CAS 1951483-73-0)
- 3-Mercapto-2-methylbenzoic acid (CAS 188700-62-1)
- Ethyl 3-(3-fluoropyridin-2-yl)acrylate (CAS 1951451-53-8)
- (porphyrin-5,15-diylbis(4,1-phenylene))diboronicacid (CAS 290356-48-8)
- 9-Isopropyl-3-phenyl-9-azabicyclo[3.3.1]nonan-3-ol (CAS 1211158-75-6)
- 4-Hydroxy-2-methylenebutanoic acid (CAS 24923-76-0)
- Pimavanserin Impurity 18 (CAS 639863-75-5)
- 2,6-Dimethyl-4-phenylpyridine-3,5-dicarboxylic acid (CAS 4446-60-0)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
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