Synonyms: 1-(6H-Indolo[2,3-b]quinoxalin-6-yl)ethanone;1-Indolo[2,3-b]quinoxalin-6-yl-ethanone;6-Acetyl-6-indolo[2,3-b]quinoxaline;6H-Indolo(2,3-b)quinoxaline, 6-acetyl-;6H-Indolo[2,3-b]quinoxaline, 6-acetyl-;Ethanone, 1-(6H-indolo[2,3-b]quinoxalin-6-yl)-