3-ethyl-2H-1,2,4-thiadiazole-5-thione

2,4-dimethyl-4H-1,3,5-dithiazin-6-amine

2-amino-5-isopropylidene-thiazol-4-one

ethyl 2,3-dihydroxy-3-methylbutanoate

5-ethyl-4-(4-methylphenyl)-1,3-thiazol-2-amine