N-(二氨基亚甲基氨基)吡啶-4-甲酰胺

2-(benzhydrylideneamino)guanidine

1-(diaminomethylideneamino)-3-phenylthiourea

2-[(4-oxocyclohexa-2,5-dien-1-ylidene)methylamino]guanidine

3-甲基-5-氧代-2,5-二氢-1H-吡唑-1-甲脒