(R)-S-(2-Amino-2-carboxyethyl)-L-homocysteine 56-88-2 Butanoic acid, 2-amino-4-[(2-amino-2-carboxyethyl)thio]-, [R-(R*,S*)]- Cystathionine Cystathionine (6CI,7CI) Cystathionine, L- Cystathionine, L- (8CI) L-(+)-Cystathionine L-Cystathionine L-Homocysteine, S-((2R)-2-amino-2-carboxyethyl)- L-Homocysteine, S-(2-amino-2-carboxyethyl)-, (R)- L-Homocysteine, S-[(2R)-2-amino-2-carboxyethyl]- L-Homocysteine, S-[(2R)-2-amino-2-carboxyethyl]- (9CI)