. . . . . . "686-58-8"@en . . . . . . . . . . . . "Hiroaki Nishiuchi, \"Method for producing gamma-glutamylcysteine.\" U.S. Patent US20030124684, issued July 03, 2003."@en . . . . . "experimental"@en . "Gamma-Glutamylcysteine"@en . . . . . . . . . . . . . . .