132274-79-4
3-chloro-5-cyano-2-pyrazinecarboxamide
→
~67%
918410-50-1
3-chloropyrazine-2,5-dicarbonitrile
6863-74-7
6-氰基-2-氯吡嗪
98-96-4
吡嗪酰胺
55557-52-3
2-氯-3-氰基吡嗪
1280212-13-6