1 1JX (2r)-2-methyl-1,4-dihydropyrido[2,3-B]pyrazin-3(2h)-one 1.000 2 5QY (3~{S})-3-methyl-3,4-dihydro-1~{H}-quinoxalin-2-one 0.846 3 4YO 6-bromo-3,4-dihydroquinoxalin-2(1h)-one 0.714 4 5GU 7-bromo-3,4-dihydroquinoxalin-2(1h)-one 0.714 5 5QX 1-methyl-3,4-dihydroquinoxalin-2-one 0.714 6 J5I 3-methyl-1,2-dihydroquinolin-2-one 0.714