3-[(4-Aminophenyl)thio]-1-(5-methylisoxazol-3-yl)-pyrrolidine-2,5-dione CAS 931291-42-8
| CAS No. | 931291-42-8 |
| Molecular Formula | C14H13N3O3S |
| Molecular Weight | 303.34 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.
CATO supplies 3-[(4-Aminophenyl)thio]-1-(5-methylisoxazol-3-yl)-pyrrolidine-2,5-dione (CAS 931291-42-8), a certified reference material (molecular formula C14H13N3O3S, MW 303.34 g/mol) for analytical method development and quality control.
Based on its molecular formula C14H13N3O3S, 3-[(4-Aminophenyl)thio]-1-(5-methylisoxazol-3-yl)-pyrrolidine-2,5-dione contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C14H13N3O3S |
| Molecular Weight | 303.34 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 1H,3H,4H-Pyrano[4,3-b]quinolin-10-amine (CAS 119738-17-9)
- 4,6-Dichloro-3-iodo-1H-pyrrolo[3,2-c]pyridine (CAS 1956327-79-9)
- N-Cyclopentyl-2-(4-ethylphenyl)quinolin-4-amine (CAS 853331-05-2)
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- 2-Hydrazinyl-1-propyl-1H-benzo[d]imidazole dihydrochloride (CAS 1215341-43-7)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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