168395-88-8 2-Hydroxypropyl methyl cellulose phthalate 37324-31-5 42612-68-0 52624-22-3 9050-31-1 9087-42-7 Cellulose phthalate hydroxypropyl methyl ether Cellulose, hydrogen 1,2-benzenedicarboxylate, 2-hydroxypropyl methyl ether HP 55 HP 55 F Hpmcp Hydroxypropylmethylcellulose phthalate