6-hydroxy-9-methyl-3-(methylamino)carbazole-1,4-dione

6-Hydroxy-9-methyl-1,4-carbazolchinon

2-(p-Hydroxy-N-methylanilino)-1,4-benzochinon

(5,8-dioxonaphthalen-2-yl) acetate

3-甲基-5-羟基苯并呋喃