2-amino-4-sulfanylbutanoic acid 2-amino-4-sulfanyl-butanoic acid 2-amino-4-mercaptobutanoic acid 2-AMINO-4-MERCAPTO-BUTYRIC ACID 454-28-4 6681-97-6 454-29-5 53510_FLUKA (+-)-Homocysteine BRN 5493225 Butyric acid, 2-amino-4-mercapto-, DL- (9CI) DL-2-Amino-4-mercaptobutyric acid EINECS 207-222-9 NSC 206252 CHEBI:17230 Hcy HOMO-CYS L-Homocysteine homocysteine Butanoic acid, 2-amino-4-mercapto- Butanoic acid, 2-amino-4-mercapto-, (S)- Butyric acid, 2-amino-4-mercapto- Butyric acid, 2-amino-4-mercapto-, L- Homocysteine, L- NSC118376 NSC43117 Butyric acid, 2-amino-4-mercapto-, DL- D,L-Homocysteine DL-Homocysteine DL-Homocysteine (free base) NSC206252 Usaf B-12 H4628_SIGMA 2-Amino-4-mercaptobutyric acid C05330