1-(2,6-dimethylphenyl)-3-pyridin-4-ylurea

1-(2,6-diethylphenyl)-3-pyridin-4-ylurea

1-(2-chloro-6-methylphenyl)-3-pyridin-4-ylurea

1-(4-吡啶基)-3-(2,4,6-三氯苯基)脲

4-氨基吡啶-D6