SEARCH Articles Figures Tables 3 - 2-pyrazinecarbonitrile 3 - Amino-5 -methoxy-2-pyrazinecarbonitrile 3- Amino-5-chloro-2-pyrazinecarbonitrile 3-Amino-5,6-diphenyl-2-pyrazinecarbonitrile 3-Amino-6-bromo-2-pyrazinecarbonitrile 3-Amino-6-methyl-2-pyrazinecarbonitrile 3-Amino-6-methyl-2-pyrazinecarbonitrile 1-oxide 3-Amino-6-phenyl-2-pyrazinecarbonitrile 6-Acetyl-3-amino-2-pyrazinecarbonitrile