5-hydroxythiophene-2-carboxylic acid CAS 1881320-94-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1881320-94-0 |
| Molecular Formula | C5H4O3S |
| Molecular Weight | 144.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-hydroxythiophene-2-carboxylic acid (CAS 1881320-94-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C5H4O3S. Molecular weight: 144.15 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C5H4O3S |
| Molecular Weight | 144.15 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 |
| CAS Registry Year (est.) | 1995 |
| Sulfur Atoms | 1 |
Related hydroxythiophene Standards
- 3-Hydroxythiophene-2-carboxylic acid (CAS 5118-07-0)
- 4-Hydroxythiophene-2-carboxylic acid (CAS 40748-90-1)
- 4-Hydroxythiophene-3-carboxylic acid (CAS 50624-50-5)
- 3-Hydroxythiophene-2-carboxamide (CAS 57059-24-2)
- 2-Acetyl-3-hydroxythiophene (CAS 5556-07-0)
- N-Hydroxythiophene-2-carboximidamide (CAS 53370-51-7)
- Methyl 5-hydroxythiophene-2-carboxylate (CAS 107433-27-2)
- Methyl 4-hydroxythiophene-3-carboxylate (CAS 65369-21-3)
Recommended Standards
- 6-Ethyl-5-fluoro-3,4-dihydropyrimidin-4-ol (CAS 1841081-48-8)
- 1,2-Diethynyl-3-fluorobenzene (CAS 412041-38-4)
- (5-Fluoro-1,3-dimethyl-1H-pyrazol-4-yl)methanol (CAS 1823403-65-1)
- 4-Aminooctahydro-1H-isoindole-4-carboxylic acid (CAS 1334147-84-0)
- 7,7-Difluoro-2-azaspiro[4.4]nonan-1-one (CAS 1936354-48-1)
- N1,N1,N6,N6-Tetramethyl-N1,N6-bis(6,10,14-trimethylpentadecan-2-yl)hexane-1,6-diaminium bromide (CAS 66967-76-8)
- 2-Tosylbenzaldehyde (CAS 171503-27-8)
- 1-(3-((Benzyl(isopropyl)amino)methyl)pyrrolidin-1-yl)-2-chloroethanone (CAS 1353963-67-3)
- 4-(4-Carboethoxyphenyl)-2-chloro-1-butene (CAS 731772-90-0)
- Tau Peptide (337-368) (Repeat 4 Domain) trifluoroacetate salt (CAS 330456-27-4)
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