N'-甲基-2-吡嗪甲酰肼

6-methyl-2-pyrazin-2-yl-1H-pyrimidin-4-one

N-(2-hydroxyethyl)pyrazine-2-carboxamide

吡嗪尿酸

2-[5-(Benzylsulfanyl)-1,3,4-oxadiazol-2-yl]pyrazine