1 9ZB 1-(4-ethyl-2,3-dihydroquinoxalin-1-yl)propan-1-one 1.000 2 NY0 1-(3-oxidanyl-2~{H}-quinoxalin-1-yl)propan-1-one 0.824 3 NYI 4-prop-2-enoyl-1,3-dihydroquinoxalin-2-one 0.824 4 OY2 Methyl 4-ethyl-1-propanoyl-2,3-dihydroquinoxaline-6-carboxylate 0.800 5 9YZ Methyl 4-propanoyl-2,3-dihydroquinoxaline-1-carboxylate 0.789 6 RJ0 1-(2,3-dihydroindol-1-yl)prop-2-en-1-one 0.706