Phenolphthalein77-09-834 % similar 6′-[Ethyl(3-methylbutyl)amino]-3′-methyl-2′-(phenylamino)spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one70516-41-534 % similar 3′,6′-Dichlorospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one630-88-634 % similar Tetrabromophenolphthalein76-62-034 % similar o-Cresolphthalein complexone2411-89-434 % similar 6′-(Diethylamino)-2′-[(2,4-dimethylphenyl)amino]-3′-methylspiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one36431-22-833 % similar 3′,6′-Diacetylfluorescein596-09-833 % similar 6'-(Dibutylamino)-3'-methyl-2'-(phenylamino)spiro[isobenzofuran-1(3H),9-(9H)-xanthen]-3-one89331-94-233 % similar Solvent red 49509-34-233 % similar 1-Naphthyl phosphate monosodium salt monohydrate81012-89-733 % similar Phenolphthalein monophosphate bis(cyclohexylammonium) salt14815-59-933 % similar Food Red No. 3 aluminum lake12227-78-032 % similar Bromthymol blue sodium34722-90-231 % similar Sodium 2-naphthalenyl phosphate (1:1)14463-68-431 % similar Xylenol blue125-31-530 % similar Methylthymol blue1945-77-330 % similar