... : 99%min HPLCCAS Number:196404-55-4Name:(4S,5R)-3-tert-butoxycarbony-2-(4-anisyl)-4-phenyl-5-oxazolidinecarboxylic acidFormula:C22H25NO6Molecular ... )-2-(4-Methoxyphenyl)-4-phenyl-3,5-oxazolidinedicarboxylic acid 3-tert-butyl ester;3,5-Oxazolidinedicarboxylic acid,2-(4-methoxyphenyl)-4 ... vs. the combination’s 9.5 percent. (4S,5R)-3-tert-butoxycarbony-2-(4-anisyl)-4-phenyl-5-oxazolidinecarboxylic acid