5,6-dihydro-7-hydroxy-4H-benz[d,e]anthracene

6-benzylbenzo[a]phenalen-7-one

9,10-二氧代-9,10-二氢-蒽-1-羧酸

9,10-dioxo-9,10-dihydroanthracene-1-carbaldehyde

2'-hydroxyoxalyl-biphenyl-2,3'-dicarboxylic acid