Synonyms: Cystathionine(6CI,7CI);Cystathionine, L- (8CI);L-Homocysteine,S-(2-amino-2-carboxyethyl)-, (R)-;Butanoic acid,2-amino-4-[(2-amino-2-carboxyethyl)thio]-, [R-(R*,S*)]-;L-(+)-Cystathionine;L-Cystathionine;S-[(2R)-2-Amino-2-carboxyethyl]-L-homocysteine;(2S)-2-Amino-4-[(2R)-2-amino-2-carboxyethyl]sulfanylbutanoic acid;