112228-65-6 2,3-Dimethyl-6-(dimethylaminoethyl)-9-hydroxy-6H-indolo-(2,3-b)quinoxaline 2,3-Dimethyl-N,N-dimethylaminoethyl-5H-indolo(2,3-b)quinoxaline 6H-Indolo(2,3-b)quinoxaline-6-ethanamine, N,N,2,3-tetramethyl- 9-OH-B220 B 220 B-220