116668-29-2
→
~80%
99585-29-2
7-nitro-9H-fluoren-4-ol
6223-83-2
9-芴酮-4-甲酸
7256-04-4
7-硝基-4-芴甲酸
6954-55-8
芴-4-羧酸
863305-32-2
biphenyl-2,2'-dicarboxylic acid