5-(3-Ethylbenzo[d]oxazol-2(3H)-ylidene)-3-phenyl-2-thioxothiazolidin-4-one CAS 25962-16-7
| CAS No. | 25962-16-7 |
| Molecular Formula | C18H14N2O2S2 |
| Molecular Weight | 354.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-(3-Ethylbenzo[d]oxazol-2(3H)-ylidene)-3-phenyl-2-thioxothiazolidin-4-one (C18H14N2O2S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 354.45 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-(3-Ethylbenzo[d]oxazol-2(3H)-ylidene)-3-phenyl-2-thioxothiazolidin-4-one (CAS 25962-16-7), molecular formula C18H14N2O2S2 and molecular weight 354.45 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-(3-Ethylbenzo[d]oxazol-2(3H)-ylidene)-3-phenyl-2-thioxothiazolidin-4-one 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 | C18H14N2O2S2 |
| Molecular Weight | 354.45 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Ethylbenzo Standards
- 1,2-Bis(3-ethylbenzo[d]thiazol-2(3H)-ylidene)hydrazine (CAS 2814-60-0)
- 2-(5-(2-(3-Ethylbenzo[d]oxazol-2(3H)-ylidene)ethylidene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid (CAS 23236-18-2)
- N-(4-Ethylbenzo[d]thiazol-2-yl)-2,3-dimethoxybenzamide (CAS 895444-94-7)
- N-(4-Ethylbenzo[d]thiazol-2-yl)benzo[d]thiazole-6-carboxamide (CAS 868677-89-8)
- 1-(2-Ethylbenzo[d]oxazol-6-yl)-3-(1,5-naphthyridin-4-yl)urea (CAS 1369497-19-7)
- 3-Ethyl-5-(2-(3-ethylbenzo[d]oxazol-2(3H)-ylidene)ethylidene)-2-thioxothiazolidin-4-one (CAS 25962-05-4)
- N-(4-Ethylbenzo[d]thiazol-2-yl)-2-(methylthio)benzamide (CAS 896353-69-8)
- N-(4-Ethylbenzo[d]thiazol-2-yl)-3-phenoxypropanamide (CAS 892858-19-4)
Recommended Standards
- 4-Ethyl-5-(4-(morpholinosulfonyl)phenyl)-4H-1,2,4-triazole-3-thiol (CAS 917745-99-4)
- Hexamidine (CAS 3811-75-4)
- 4-(2-(4-Benzylpiperazin-1-yl)ethoxy)benzohydrazide (CAS 937604-10-9)
- Tofacitinib Impurity 85 (CAS CATO-C4X-107985)
- Apremilast-d5 (CAS 1258597-47-5)
- 1-(2-Phenoxyethyl)-1H-pyrazol-3-amine (CAS 1240570-31-3)
- 3-(1-(3-(4-Bromophenyl)propanoyl)pyrrolidin-3-yl)thiazolidine-2,4-dione (CAS 1795481-46-7)
- 2,5-Dichloro-8-methylquinoline-3-carbonitrile (CAS 948291-30-3)
- 5-(Thiophen-2-ylmethyl)-1,3,4-oxadiazole-2-thiol (CAS 1152542-90-9)
- 2-({[3-(trifluoromethoxy)phenyl]methyl}carbamoyl)cyclopropane-1-carboxylic acid (CAS 1024144-58-8)
- 5-Amino-1-(4-chlorophenyl)-N-phenethyl-1H-1,2,3-triazole-4-carboxamide (CAS 929864-12-0)
- 3-Ethyl-4-(2-methylpent-2-enoyl)piperazin-2-one (CAS 1344816-94-9)
- Rivastigmine Impurity 44 (CAS 1285033-79-5)
- Acetyl Tetrapeptide-5 (CAS 820959-17-9)
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