((3-Hydroxy-2-pyridyl)methyl)trimethylammonium bromide diphenylacetate (ester) 66967-93-9 AMMONIUM, ((3-HYDROXY-2-PYRIDYL)METHYL)TRIMETHYL-, BROMIDE, DIPHENYLACETATE (est Ammonium, ((3-hydroxy-2-pyridyl)methyl)trimethyl-, bromide, diphenylacetate (ester) Ro 2-3128