同系物導航
C20H22N2O
C19H18N2O C20H20N2O C21H22N2O
C20H18N2O

C20H20N2 C20H20N2O2
C20H19NO C20H21N3O

化學式C20H20N2O(摩爾質量:304.39 g/mol)可以指: