1503-04-4

Methyl 3-amino-6-chloro-5-hydroxypyrazine-2-carboxylate methyl 3-amino-6-chloro-5-oxo-4,5-dihydropyrazine-2-carboxylate 3-amino-6-chloro-5-oxo-4,5-dihydro-pyrazine-2-carboxylic acid methyl ester 2-Pyrazinecarboxylic acid, 3-amino-6-chloro-4,5-dihydro-5-oxo-, methyl ester