| CAS No. | 860789-23-7 |
| Molecular Formula | C23H21N3O3 |
| Molecular Weight | 387.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-phenoxyphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (C23H21N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-phenoxyphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860789-23-7), molecular formula C23H21N3O3 and molecular weight 387.43 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1-[(4-Methoxyphenyl)methyl]-3-methyl-4-(4-phenoxyphenyl)-4,5-dihydro-1H-1,2,4-triazol-5-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.
| Molecular Formula | C23H21N3O3 |
| Molecular Weight | 387.43 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |