"David P. Pantaleone, Ian G. Fotheringham, Jennifer L. Ton, \"Process and composition for preparing D-aspartic acid.\" U.S. Patent US5834259, issued November 10, 1998."@en . "experimental"@en . . . . . . . . . . . . . . . . "D-Aspartic Acid"@en . . . . . . . . "1783-96-6"@en . . . . . . . "The D-isomer of aspartic acid. [PubChem]"@en . . . . . . .