SEARCH Articles Figures Tables Galactopyranosiduronic acid, cholesterol 2,3,4-tri-O-acetyl-a-D-, methyl ester Galactosiduronic acid, 3,4-di-O-methylL-rhamnose- 2,3,4-tri-Omethyl methyl ester Methanesulfonic acid, trifluoroFriedel-Crafts reaction tri fluoroacetyl ester Phosphoric acid tri-n-butyl ester Phosphoric acid, tris(2-ethylhexyl) ester Phosphorous acid, tris ester Tris acid Tris silyl ester protect acids