2-氯甲基咪唑并吡嗪

(2R)-2-(3-chloro-4-methylsulfonylphenyl)-3-[(1R)-3-oxocyclopentyl]-N-pyrazin-2-ylpropanamide

N-[4-(pyrazin-2-ylsulfamoyl)phenyl]acetamide

N,N-dimethyl-N'-pyrazin-2-ylmethanimidamide