1-(4-氰基苯基)脲

1-methyl-6-phenyl-1,3-diazinane-2,4-dione

1,1-dibutyl-3-(4-methoxyphenyl)urea

3-(4-acetylphenyl)-1,1-dibutylurea

[7-(trifluoromethyl)-9H-carbazol-3-yl]urea