3-(1-bromo-2-oxo-2-phenylethyl)-1H-quinoxalin-2-one

3-(2-oxo-2-phenylethylidene)-3,4-dihydroquinoxalin-2(1H)-one

3-styryl-1,4-benzodiazine-2-one

(E)-2-oxo-4-phenyl-3-butenoic acid

1,2-苯二胺