139-86-6 2-Thienylalanine 2-Thiophenealanine 2-Thiophenepropanoic acid, alpha-amino- (9CI) 2-Thiophenepropionic acid, alpha-amino- 3-(2-Thienyl)alanine EINECS 205-378-2 NSC 754 Thienylalanine X 151 alpha-Amino-2-thiophenepropanoic acid