| CAS No. | 836639-18-0 |
| Molecular Formula | C25H19N5O2 |
| Molecular Weight | 421.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
2-(5,7-Diphenyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione (CAS 836639-18-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C25H19N5O2. Molecular weight: 421.45 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
| Molecular Formula | C25H19N5O2 |
| Molecular Weight | 421.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 5 |