... Standards: AJI92,USP26,EP5,FCC4 L-Aspartic AcidIndications and UsageAspartic acid (abbreviated as Asp or D; Asx or B represent either ... carboxylate anion, salt, or ester of aspartic acid is known as aspartate. The L-isomer of aspartate is one of the 20 ... in biosynthesis. As with all amino acids, the presence of acid protons depends on the residue's local chemical environment and ...