化学式C20H19N3O(摩尔质量 317.38 g/mol)可能指:

同系物导航
C20H21N3O
C19H17N3O C20H19N3O C21H21N3O
C20H17N3O

C20H19N3 C20H19N3O2
C20H18N2O C20H20N4O