| CAS No. | 99643-38-6 |
| Molecular Formula | C21H28N4 |
| Molecular Weight | 336.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
High-purity 1,1',3,3',5,5',6,6'-Octamethyl-1,1',3,3'-tetrahydro-2,2'-spirobi[benzo[d]imidazole] (CAS 99643-38-6) pharmaceutical standards reference standard. Molecular formula: C21H28N4. Molecular weight: 336.47 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
| Molecular Formula | C21H28N4 |
| Molecular Weight | 336.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |