1-Propanesulfonic acid, 3-((4-((3,5-dibromo-2-pyridinyl)azo)phenyl)ethylamino)- 100743-65-5 3-((4-((3,5-Dibromo-2-pyridinyl)azo)phenyl)ethylamino)-1-propanesulfonic acid 4-(3,5-Dibromo-2-pyridylazo)-N-ethyl-N-sulfopropylaniline Dibr-paesa