1(3H)-Isobenzofuranone, 3-(4-hydroxy-2-methyl-5-(1-methylethyl)phenyl)-3-(2-methyl-5-(1-methylethyl)-4-(phosphonooxy)phenyl)-, compd. with 2-amino-2-ethyl-1,3-propanediol (1:1) 69847-47-8 Thymolphthalein monophosphate, 2-amino-2-ethyl-1,3-propanediol salt