2-Methyl-4-((2-phenyl-1H-indol-3-yl)methylene)oxazol-5(4H)-one CAS 81502-42-3
| CAS No. | 81502-42-3 |
| Molecular Formula | C19H14N2O2 |
| Molecular Weight | 302.33 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.
2-Methyl-4-((2-phenyl-1H-indol-3-yl)methylene)oxazol-5(4H)-one (CAS 81502-42-3), molecular formula C19H14N2O2 and molecular weight 302.33 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Methyl-4-((2-phenyl-1H-indol-3-yl)methylene)oxazol-5(4H)-one (C19H14N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 2-Methyl-4-((2-phenyl-1H-indol-3-yl)methylene)oxazol-5(4H)-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 | C19H14N2O2 |
| Molecular Weight | 302.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 2-Hydroxycarbazole-3-carboxanilide (CAS 94212-15-4)
- 3-(1-Benzofuran-2-yl)-1-benzyl-1h-pyrazole-4-carbaldehyde (CAS 956986-58-6)
- 2-Benzyl-4-methyl-1H-pyrrolo[3,4-c]quinoline-1,3(2H)-dione (CAS 91680-07-8)
- 3-(1H-Indol-2-yl)-N-phenyl-1H-pyrazole-4-carboxamide (CAS 827318-55-8)
- ISODRIN (CAS 465-73-6)
- 4-Iodo-1,3-dimethyl-5-(((tetrahydro-2H-pyran-2-yl)oxy)methyl)-1H-pyrazole (CAS 2450997-78-9)
- 2-(2-Aminobutyl)pyrimidin-4-amine (CAS 1339689-14-3)
- 2-((4-((3-Methoxypropyl)carbamoyl)phenyl)carbamoyl)benzoic acid (CAS 940527-24-2)
- Ethyl 5-(4-nitrophenyl)-1H-pyrazole-3-carboxylate (CAS 854700-38-2)
- N-(5-Propylisoxazol-3-yl)morpholine-4-carboxamide (CAS 55808-63-4)
- Methyl 5-amino-4,6-dichloropicolinate (CAS 1805930-73-7)
- trimethyl-[2-(1-methylpyrazol-4-yl)ethynyl]silane (CAS 1201657-09-1)
- Difelikefalin Impurity 51 (CAS CATO-C4X-304151)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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