化学式C20H20N2O(摩尔质量 304.39 g/mol)可以指:

同系物导航
C20H22N2O
C19H18N2O C20H20N2O C21H22N2O
C20H18N2O

C20H20N2 C20H20N2O2
C20H19NO C20H21N3O