D,L-homocysteic acid, H-CYA-OH, 2-AMINO-4-SULPHOBUTYRIC ACID, homocysteic acid, DL-2-AMINO-4-SULFOBUTYRIC ACID, 2-Amino-4-sulfo-buttersaeure, 2-AMINO-4-SULFONY-BUTANOIC ACID, 2-Amino-4-sulfobutanoic acid, HOMOCYSTEIC ACID,DL, DL-HoMocysteic Acid, DL-HoMocysteic-d4 Acid H2O, 2-Amino-4-sulfobutyricacid