870-93-9 Butanoic acid, 4,4'-dithiobis(2-amino-, (2R,2'R)-rel- Butanoic acid, 4,4'-dithiobis(2-amino-, (R*,R*)-(+-)- (9CI) Butyric acid, 4,4'-dithiobis(2-amino-, DL- (8CI) DL-4,4'-Dithiobis(2-aminobutyric acid) DL-Homocystine EINECS 212-803-5 HOMOCYSTINE, DL- NSC 11337 NSC 226570 Oxidized DL-Homocysteine