(Z)-4-oxo-4-(thiazol-2-ylamino)but-2-enoicacid CAS 19789-91-4
| CAS No. | 19789-91-4 |
| Molecular Formula | C7H6N2O3S |
| Molecular Weight | 198.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(Z)-4-oxo-4-(thiazol-2-ylamino)but-2-enoicacid (CAS 19789-91-4) is a high-purity analytical reference standard with the molecular formula C7H6N2O3S and a molecular weight of 198.20 g/mol.
Based on its molecular formula C7H6N2O3S, (Z)-4-oxo-4-(thiazol-2-ylamino)but-2-enoicacid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), (Z)-4-oxo-4-(thiazol-2-ylamino)but-2-enoicacid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H6N2O3S |
| Molecular Weight | 198.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 6-(Methylsulfonyl)-5H-purine (CAS 19769-32-5)
- (2Z)-2-(Thiophen-2-yl)but-2-enedioic acid (CAS 339016-61-4)
- 6-(methylsulfanyl)-1H,2H,3H,4H,7H-pyrazolo[3,4-d]pyrimidine-3,4-dione (CAS 1928755-84-3)
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