dicyclohexylamine salt

6-氟-3-氧代-3,4-二氢-2-吡嗪甲腈

3-羟基吡嗪-2-酰胺

methyl 6-fluoro-3-oxo-3,4-dihydro-2-pyrazinecarboxylate

3-氨基-6-氟-2-吡嗪甲酰胺