2-cyano-N-[(E)-(5-nitrofuran-2-yl)methylideneamino]acetamide

3-amino-2,4-dicyano-5-phenylpenta-2,4-dienehydrazide

cyanoacetic acid hydrazide

2-cyano-N-[(Z)-1-phenylethylideneamino]acetamide

2-cyano-N'-[(Z)-(6-oxocyclohexa-2,4-dien-1-ylidene)methyl]acetohydrazide