2,3-Dimethyl-6H-indolo[2,3-b]quinoxaline 49764-30-9 AIDS-125631 AIDS125631 NSC78699 {5H-Indolo[2,3-b]quinoxaline,} 2,3-dimethyl- {6H-Indolo[2,} 3-b\]quinoxaline, 2,3-dimethyl-