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3-((5-chloropyridin-2-yl)carbamoyl)pyrazine-2-carboxylic acid
6-(5-chloro-2-pyridyl)-5,7-dioxo-6,7-dihydro-5H-pyrrolo(3,4-b)pyrazine
4-methylpiperazine-1-carbonyl chloride monohydrochloride
6-(5-chloropyridin-2-yl)-7-hydroxy-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-one
2,3-pyrazinedicarboxylic anhydride