Synonyms: Glycine,N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-isopropyl-2-methyl-m-phenylene)methylene]]di-,S,S-dioxide (8CI); Glycine,N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[[6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene]methylene]]bis-,S,S-dioxide; Phenolsulfonephthalein, 3',3''-bis[[(carboxymethyl)amino]methyl]-5',5''-diisopropyl-2',2''-dimethyl-(6CI); 3H-2,1-Benzoxathiole, glycine deriv.; Glycinethymol blue