1 UXS (2s)-2-amino-4-(methylsulfanyl)butan-1-ol 1.000 2 MED D-methionine 0.889 3 MET Methionine 0.889 4 MV6 (2s)-2-amino-4-(methylsulfanyl)butanethioic O-acid 0.889 5 QXV D-methioninamide 0.889 6 4CY Nitrilo-L-methionine 0.800 7 ESC 2-amino-4-ethyl sulfanyl butyric acid 0.800 8 ME0 Hydroxy-L-methionine 0.800 9 MHO S-oxymethionine 0.800 10 SME Methionine sulfoxide 0.800 11 HCS 2-amino-4-mercapto-butyric acid 0.778 12 KCY D-homocysteine 0.778 13 MS6 (2s)-2-amino-4-(methylsulfanyl)butane-1-thiol 0.778 14 2FM S-(difluoromethyl)homocysteine 0.727 15 MSL (2s)-2-amino-4-(methylsulfonimidoyl)butanoic acid 0.727 16 MT2 [(3s)-3-amino-3-carboxypropyl](ethyl)methylsulfonium 0.727 17 OMT S-dioxymethionine 0.727 18 H9L 4-methylsulfanyl-2-oxidanyl-butanoic acid 0.700 19 KMT 4-(methylsulfanyl)-2-oxobutanoic acid 0.700