C21H26N2O
| Related molecular formulas | ||
|---|---|---|
| C21H28N2O | ||
| C20H24N2O | C21H26N2O | C22H28N2O |
| C21H24N2O | ||
| C21H26N2 | C21H26N2O2 | |
| C21H25NO | C21H27N3O | |
The molecular formula C21H26N2O (molar mass: 322.452 g/mol, exact mass: 322.2045 u) may refer to:
- Acetylfentanyl
- Benzylfentanyl (R-4129)