(6E)-6-[(4-nitrophenyl)hydrazinylidene]hexane-1,2,3,4,5-pentol

4-nitro-N-[(E)-pyridin-3-ylmethylideneamino]aniline

N'-(4-nitroanilino)-N-(4-nitrophenyl)iminomethanimidamide

(4Z,5E)-4,5-bis[(4-nitrophenyl)hydrazinylidene]pentanoic acid

4-(3,5-diphenyl-3,4-dihydropyrazol-2-yl)aniline