(4S,5S)-2,2-Dimethyl-4-phenyl-,5-oxazolidinedicarboxylic Acid 3-(1,1-Dimethylethyl) Ester is used as a reagent in the synthesis of Docetaxel (D494420); an antineoplastic and antimitotic agent that promotes the assembly of micro-tubules and inhibits their de-polymerization to free tubulin.