1,3,4-Thiadiazol-2-amine, 5-(2,4-dimethylphenyl)-

[[(E)-(2-hydroxy-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]amino]thiourea

[(E)-(3,4-dimethoxyphenyl)methylideneamino]thiourea

[[(Z)-2-nitroso-1-phenylprop-1-enyl]amino]thiourea

[(E)-2-(7,8-dimethyl-2,4-dioxobenzo[g]pteridin-10-yl)ethylideneamino]thiourea