SEARCH Articles Figures Tables 2-Amino-3-cyanopyrazines 2-Amino-6- -3-cyanopyrazine 2-Amino-6-chloro-5-chloromethyl-3-cyanopyrazine 2-Chloro-3-cyanopyrazine 2-Cyanopyrazine 4-Amino-2-chloro-5- Cyanopyrazines