4-hydroxy-1-methyl-N-[(E)-(1-methyl-5-nitroimidazol-2-yl)methylideneamino]-2-oxoquinoline-3-carboxamide

1-ethyl-4-hydroxy-N-[(E)-(1-methyl-5-nitroimidazol-2-yl)methylideneamino]-2-oxoquinoline-3-carboxamide

N-[(E)-(1-methyl-5-nitroimidazol-2-yl)methylideneamino]-4,5-dihydro-1,3-thiazol-2-amine

N-[(E)-(1-methyl-5-nitroimidazol-2-yl)methylideneamino]-3,4-dihydro-2H-pyrrol-5-amine

dimethyl 2-[(1-methyl-5-nitroimidazol-2-yl)methylidene]propanedioate