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7-fluoro-1H,2H,3H,4H-pyrido[2,3-b]pyrazin-2-one
Pyrido[2,3-b]pyrazin-8-amine
7-Bromopyrido[2,3-b]pyrazine
6-methoxy-Pyrido[2,3-b]pyrazin-3(4H)-one
7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine
7-iodo-3,4-dihydropyrido[2,3-b]pyrazin-2(1H)-one