115-39-9 3',3'',5',5''-Tetrabromophenolsulfonephthalein 3,3',5,5'-Tetrabromophenolsulfonphthalein Albutest Bromophenol Blue Bromphenol blue NSC7818 Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-, S,S-dioxide Tetrabromophenol blue Tetrabromphenol Blue