3,4,4,6-tetramethyl-N-phenyl-1,3-thiazin-2-imine

5-benzyl-N-phenyl-1,3,4-thiadiazol-2-amine

1-(dibutylamino)-3-phenylthiourea

1-phenyl-3-piperidin-1-ylthiourea

methyl N-anilino-N'-phenylcarbamimidothioate