1 H70 2,4-dichloro-6-(3,4,5-tribromo-1h-pyrrol-2-yl)phenol 1.000 2 2JM 2-bromo-6-(3,4,5-tribromo-1h-pyrrol-2-yl)phenol 0.833 3 PBQ Pentabromopseudilin 0.789 4 IA2 2,4-dichloro-6-(3,4,5-trichloro-1h-pyrrol-2yl)phenol 0.700