9-benzyl-1-methylcarbazole-3-carbaldehyde

9-benzyl-1-((N,N-dimethylamino)methyl)carbazole-3-carbaldehyde

9-benzyl-1,2,3,4-tetrahydrocarbazole-7-carbaldehyde

1,5-二甲基-6H-吡啶并[4,3-b]咔唑