L-Aspartate

Also known as aspartic acid.  L-aspartate is a non-essential amino acid used in the formation of proteins, as well as several other important biochemical reactions, such as the urea cycle and malate-aspartate shuttle.  No specific need for aspartate supplements per se has been identified, although it may be used as a chelating agent for the delivery of certain supplemental minerals (such as zinc or magnesium).