1-carbazol-2-yl-2-phenyl-ethanone

5,6,7,8-tetrahydro-carbazole-2-carboxylic acid methyl ester

1-(9-benzoyl-carbazol-2-yl)-2-phenyl-ethanone

1-(9-acetylcarbazol-2-yl)ethanone

二氧化碳