5-Ethynylthiophene-2-carboxylic acid CAS 174672-58-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 174672-58-3 |
| Molecular Formula | C7H4O2S |
| Molecular Weight | 152.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 5-Ethynylthiophene-2-carboxylic acid (CAS 174672-58-3) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C7H4O2S. Molecular weight: 152.17 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C7H4O2S |
| Molecular Weight | 152.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Sulfur Atoms | 1 |
Related Ethynylthiophene Standards
- 3-Ethynylthiophene-2-carboxylic acid (CAS 1849196-26-4)
- 5-Ethynylthiophene-3-carboxylic acid (CAS 1849280-96-1)
- 4-Ethynylthiophene-2-carboxylic acid (CAS 1935990-01-4)
- Methyl 4-ethynylthiophene-2-carboxylate (CAS 1448423-03-7)
- Methyl 5-ethynylthiophene-2-carboxylate (CAS 177575-26-7)
- Methyl 3-ethynylthiophene-2-carboxylate (CAS 1800082-83-0)
- 3-Ethynylthiophene-2-carbaldehyde (CAS 221103-69-1)
- 4-Ethynylthiophene-2-carbaldehyde (CAS 913828-75-8)
Recommended Standards
- 1-fluoranyl-1-phenyl-propan-2-one 1-fluoro-1-phenyl-2-propanone 1737-19-5 A811558 (CAS 1737-19-5)
- 1-(3-Fluoro-2-methylphenyl)ethan-1-one (CAS 177942-47-1)
- Oxazolo[5,4-b]pyridine-2(1H)-thione (CAS 169205-99-6)
- Ethyl 1-amino-3-oxocyclobutane-1-carboxylate (CAS 1314961-81-3)
- 4-Cbz-2-methylmorpholine (CAS 1217098-31-1)
- 4-[(4-Amino-1-piperidyl)methyl]benzonitrile Dihydrochloride (CAS 1158365-82-2)
- 3-Cyclopropylpropanenitrile (CAS 5266-72-8)
- Dibutyl Carbonate (CAS 542-52-9)
- 1-Dehydroxy-1-Dehyro-Fexofenadine-d6 Methyl Ester (CAS 1795031-46-7)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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