498-40-8 Alanine, 3-sulfo-, L- (8CI) Cepteic acid Cipteic acid Cysteic acid (VAN) Cysteinesulfonic acid Cysteinic acid Cysteric acid EINECS 207-861-3 L-Alanine, 3-sulfo- (9CI) L-Cysteic acid NSC 254030