6-硝基-2-氧代-2H-1-苯并吡喃-3-羧酸

3-氯甲基-5-硝基水杨醛

6-nitro-2H-chromene

6-(hydrazinylmethylidene)-4-nitrocyclohexa-2,4-dien-1-one

(6E)-6-[(2,2-diethylhydrazinyl)methylidene]-4-nitrocyclohexa-2,4-dien-1-one