title: C21H25NO4
text: # 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
  