| CAS No. | 185213-56-3 |
| Molecular Formula | C28H31N4O5 |
| Molecular Weight | 503.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
1-{4-[(2,5-dioxopyrrolidin-1-yl)oxy]-4-oxobutyl}-11-ethyl-1,2,3,4,8,9,10,11-octahydro-13λ⁴-oxa-1,6,11-triazapentacen-13-ylium (CAS 185213-56-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C28H31N4O5. Molecular weight: 503.57 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
| Molecular Formula | C28H31N4O5 |
| Molecular Weight | 503.57 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) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2009 |
| Nitrogen Atoms | 4 |