丙基吡嗪-2-羧酸酯

N-乙基-2-吡嗪甲酰胺

N-(3-chlorophenyl)pyrazine-2-carboxamide

N-(3-(trifluoromethyl)phenyl)pyrazine-2-carboxamide

methyl (2S)-2-cyclohexyl-2-(pyrazine-2-carbonylamino)acetate