(E)-4-{[3-(Aminocarbonyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]amino}-4-oxo-2-butenoic acid CAS 304666-99-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 304666-99-7 |
| Molecular Formula | C13H14N2O4S |
| Molecular Weight | 294.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-4-{[3-(Aminocarbonyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]amino}-4-oxo-2-butenoic acid (CAS 304666-99-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C13H14N2O4S. Molecular weight: 294.33 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C13H14N2O4S |
| Molecular Weight | 294.33 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (2-[(2,5-Dimethoxyphenyl)amino]-1,3-thiazol-4-yl)acetic acid (CAS 927983-59-3)
- {2-[(4-Methoxyphenyl)imino]-3-methyl-4-oxo-1,3-thiazolidin-5-yl}acetic acid (CAS 444544-43-8)
- ((3-(Pyrazin-2-yl)-1,2,4-oxadiazol-5-yl)thio)methyl pivalate (CAS 345631-82-5)
- Methyl 3-chloro-2-cyanobenzoate (CAS 1211594-32-9)
- 3-Bromo-4-chloro-5-methoxy-N,N-dimethylbenzamide (CAS 2089314-87-2)
- 3-Aminocarbonyl-5-bromophenylboronic acid (CAS 2121513-97-9)
- N-(5-(2,5-Dichlorophenyl)-1,3,4-oxadiazol-2-yl)butyramide (CAS 891139-55-2)
- Sulfo-SDAD(Sulfo-NHS-SS-Diazirine) (sulfosuccinimidyl 2-[(4,4'-azipentanamido)ethyl]-1,3'-dithiopropionate] (CAS 1226983-32-9)
- N-(6-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl](methyl)amino}-2,5-dioxo-2H,5H,6H-pyrano[3,2-c]pyridin-3-yl)-3-(trifluoromethyl)benzamide (CAS 341966-33-4)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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