(2S,4R)-3-Benzoyl-4-[(4-methoxyphenyl)methyl]-4-methyl-2-phenyl-5-oxazolidinone is an intermediate for the synthesis of O,α-Dimethyl-L-tyrosine Hydrochloride (D479690), which is the S-enantiomer of O,α-Dimethyl-DL-tyrosine, a metabolite of Tryptophan analogs. A tyrosine hydroxylase inhibitor.