109322-16-9 6H-Indolo(2,3-b)quinoxaline-6-acetic acid, 9-bromo-, 2-((phenylamino)thioxomethyl)hydrazide 9-Bromo-6H-indolo(2,3-b)quinoxaline-6-acetic acid 2-((phenylamino)thioxomethyl)hydrazide BRN 5667448