4-Hydroxythiophene-2-carbonitrile CAS 256495-21-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 256495-21-3 |
| Molecular Formula | C5H3NOS |
| Molecular Weight | 125.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4-Hydroxythiophene-2-carbonitrile (CAS 256495-21-3) pharmaceutical standards reference standard. Molecular formula: C5H3NOS. Molecular weight: 125.15 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C5H3NOS |
| Molecular Weight | 125.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Hydroxythiophene Standards
- 3-Hydroxythiophene-2-carbonitrile (CAS 57059-19-5)
- 5-Hydroxythiophene-2-carbonitrile (CAS 550379-22-1)
- 5-Hydroxythiophene-2-carbaldehyde (CAS 144876-23-3)
- 3-Hydroxythiophene-2-carbaldehyde (CAS 5118-08-1)
- 4-Hydroxythiophene-2-carbaldehyde (CAS 293742-29-7)
- 2-Acetyl-3-hydroxythiophene (CAS 5556-07-0)
- N-Hydroxythiophene-2-carboximidamide (CAS 53370-51-7)
- 3-Hydroxythiophene-2-carboxamide (CAS 57059-24-2)
Recommended Standards
- 3-Thienyl isocyanate (CAS 76536-95-3)
- 5-Amino-1,3-thiazole-4-carbonitrile (CAS 31785-15-6)
- 3H-Pyrazolo[3,4-d]thiazole (CAS 25649-12-1)
- 4-Amino-2-hydroxybenzenesulfonic acid (CAS 5336-26-5)
- N-(tert-Butyl)-2-phenylquinolin-4-amine (CAS 128924-95-8)
- 2-(N-Boc-N-methylamino)-5-bromopyridine (CAS 227939-01-7)
- Cenobamate Impurity 53 (CAS CATO-C4X-241653)
- (-)-Bicuculline methiodide DISCONTINUED. offer B382505 (CAS 40709-69-1)
- Drotaverin Impurity 45 (CAS 855199-57-4)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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