6-氯-1,2,3,4-四氢咔唑

6-chloro-1-hydroxy-1,2,3,4-tetrahydro-9H-carbazole-9-carbaldehyde

1,2-环己二酮

6-chloro-3,4-dihydro-1(2H)-oxo-carbazole-9-carboxaldehyde

2-(羟基亚甲基)环己酮