5-methyl-2-phenyl-1,3,4-oxadiazin-6-one

2-naphthalen-2-yl-5-phenyl-1,3,4-oxadiazole

2,5-diphenyl-[1,3,4]oxadiazolo[3,2-d][1,3,4]thiadiazine-6-thione

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

2-phenyl-1,3,4-thiadiazole