5-Ethynylthiophene-3-carboxylic acid CAS 1849280-96-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1849280-96-1 |
| Molecular Formula | C7H4O2S |
| Molecular Weight | 152.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Ethynylthiophene-3-carboxylic acid (CAS 1849280-96-1) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C7H4O2S. Molecular weight: 152.17 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
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.) | 1995 |
| Sulfur Atoms | 1 |
Related Ethynylthiophene Standards
- 5-Ethynylthiophene-2-carboxylic acid (CAS 174672-58-3)
- 3-Ethynylthiophene-2-carboxylic acid (CAS 1849196-26-4)
- 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-fluoro-3-(2-methoxyethenyl)benzene (CAS 188400-90-0)
- 5-Fluoroisochroman (CAS 182949-87-7)
- 3-Cyclopropyl-4-fluorophenol (CAS 1887175-94-1)
- 3-Fluorocyclohexan-1-one (CAS 107409-00-7)
- 4-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenethyl)morpholine (CAS 364794-81-0)
- 2-Fluoro-5-methyl-3-(tributylstannyl)pyridine (CAS 1025745-87-2)
- Lincomycin Impurity 20 (CAS CATO-C4X-134220)
- (3R,5S)-5-((R)-1,2-dihydroxyethyl)-3-hydroxydihydrofuran-2(3H)-one (CAS 499-87-6)
- 1,2-Dimethylimidazole-5-carbaldehyde (CAS 24134-12-1)
- Mast Cell Degranulating Peptide HR-1 (CAS 80533-94-4)
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