1(3H)-Isobenzofuranone, 3-(4-hydroxy-2-methyl-5-(1-methylethyl)phenyl)-3-(2-methyl-5-(1-methylethyl)-4-(phosphonooxy)phenyl)-, magnesium sodium salt (2:1:4) 17016-43-2 67953-09-7 Thymolphthalein monophosphate, magnesium, sodium salt