N-phenyl-5-pyridin-4-yl-1,3,4-thiadiazol-2-amine

3-methyl-1',3'-diphenylspiro[1,3-benzothiazole-2,5'-imidazolidine]-2',4'-dithione

2-(5-anilino-1,3,4-thiadiazol-2-yl)acetic acid

1-phenyl-3-(phenylcarbamothioyl)thiourea