. . . . . "O-Acetylserine"@en . . . . . . . . . . . . . . . . . . . . . . "Walfred Leinfelder, Peter Heinrich, \"Process for preparing O-acetylserine, L-cysteine and L-cysteine-related products.\" U.S. Patent US6218168, issued October, 1990."@en . . . . . "4985-36-8"@en . . . "experimental"@en . . . . .