Synonyms: Bromothymolblue (6CI);Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-,S,S-dioxide;Thymol, 6,6'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-,S,S-dioxide (8CI);3,3'-Dibromothymolsulfonphthalein;3,3'-Dibromothymolsulfophthalein;Bromthymolblue;Dibromothymolsulfophthalein;NSC 7819;