3,6-diphenyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole

4-amino-3-[(2,4-dichlorophenoxy)methyl]-1H-1,2,4-triazole-5-thione

[5-(4-bromophenyl)-6H-1,3,4-thiadiazin-2-yl]hydrazine

[5-(4-chlorophenyl)-6H-1,3,4-thiadiazin-2-yl]hydrazine

(5-phenyl-6H-1,3,4-thiadiazin-2-yl)hydrazine