C21H25NO4
# C21H25NO4

The molecular formula $C_{21}H_{25}NO_4$ (molar mass: 355.42 g/mol, exact mass: 355.1784 u) may refer to:

* Glaucine, an alkaloid
* LY-307,452
* Nalmexone
* Tetrahydropalmatine, an alkaloid
* Yuanhunine
