Palonosetron Impurity 66

(R) -8- ((((R) -quinuclidin-3-yl) amino) methyl) -5,6,7,8-tetrahydronaphthalene-1-carboxylic acid and (S) -8- ((((S) -quinuclidin-3-yl) amino) methyl) -5,6,7,8-tetrahydronaphthalene-1-carboxylic acid