D-Asparagine Methyl Ester is a protected form of D-Asparagine (A788960) which is an isomer of L-Asparagine (A790005). L-Asparagine is used by bacteria (such as Saccharomyces cerevisiae) as a sole nitrogen source for replication. L-Asparagine is also a competitive inhibitor of staphylococcal L-asparaginase and is used as a reagent to synthesize peptide antibiotics.