3-amino-6-(3,3-dimethylbut-1-ynyl)pyrazine-2-carbonitrile

3-amino-6-hex-1-ynylpyrazine-2-carbonitrile

3-氨基吡嗪-2-甲酰胺

2-氨基-3-氨基甲基吡嗪

3-(4,5-dihydro-1H-imidazol-2-yl)pyrazin-2-amine