1 MT2 [(3s)-3-amino-3-carboxypropyl](ethyl)methylsulfonium 1.000 2 ESC 2-amino-4-ethyl sulfanyl butyric acid 0.909 3 MED D-methionine 0.818 4 MET Methionine 0.818 5 4CY Nitrilo-L-methionine 0.750 6 ME0 Hydroxy-L-methionine 0.750 7 MHO S-oxymethionine 0.750 8 SME Methionine sulfoxide 0.750 9 HCS 2-amino-4-mercapto-butyric acid 0.727 10 KCY D-homocysteine 0.727 11 UXS (2s)-2-amino-4-(methylsulfanyl)butan-1-ol 0.727