二苯胂化氯

4-amino-3-phenyldiazenylnaphthalene-1-sulfonic acid

3,7-dimethylnaphthalene-1,2-dione

2,2-dimethyl-5-(phenylhydrazinylidene)-1,3-dioxane-4,6-dione

1,1-dibenzoyl-2-phenylhydrazine