3',3'',5',5''-Tetrabromophenolsulfonephthalein;2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1λ<sup>6</sup>-benzoxathiol-3-yl]phenol;Bromphenol Blue Sultone Form;Phenol, 4,4‘-(3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-, S,S-dioxide;Bromophenol Blue;3',3'',5',5''-Tetrabromophenolsulfonphthalein;Bromophenol blue (BPB);