Ethyl 5-acetamido-4-cyano-3-methylthiophene-2-carboxylate CAS 23903-49-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 23903-49-3 |
| Molecular Formula | C11H12N2O3S |
| Molecular Weight | 252.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 5-acetamido-4-cyano-3-methylthiophene-2-carboxylate (CAS 23903-49-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C11H12N2O3S. Molecular weight: 252.29 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C11H12N2O3S |
| Molecular Weight | 252.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- Ethyl 3-amino-4-methoxythieno[2,3-b]pyridine-2-carboxylate (CAS 338773-61-8)
- Isopropyl 2-(2-cyanoacetamido)thiophene-3-carboxylate (CAS 590351-55-6)
- Ethyl 2,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate (CAS 23903-53-9)
- 1-(4-Nitrophenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole (CAS 139655-04-2)
- 1-(6-Methyl-2-pyridyl)acetone (CAS 65702-08-1)
- (1S,2R,5R)-5-(6-Amino-9H-purin-9-yl)-3-((S)-1-hydroxyallyl)cyclopent-3-ene-1,2-diol (CAS 194353-50-9)
- 4,4,5,5-Tetramethyl-2-(3-methyl-4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 1421340-99-9)
- 3-amino-4-sulfanylbenzene-1-sulfonamide (CAS 65192-70-3)
- 1-Benzyl-3-methylisoquinoline (CAS 51650-27-2)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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