4--1,2-naphthoquinone

1,3,3-三甲基吲哚啉-6’-(1-哌啶基)螺吩恶嗪

4-苯胺基-1,2-萘二酮

diethyl 2-(3-hydroxy-4-oxonaphthalen-1-ylidene)propanedioate

4-(4-nitroanilino)naphthalene-1,2-dione