1 48V {[(2r)-2,3-diamino-3-oxopropyl]sulfanyl}acetic acid 1.000 2 AEA (2-amino-2-carbamoyl-ethylsulfanyl)-acetic acid 1.000 3 CCJ Carboxymthylated D- cysteine 0.833 4 CCS Carboxymethylated cysteine 0.833 5 CGV S-[(R)-carboxy(hydroxy)methyl]-L-cysteine 0.769 6 OCY Hydroxyethylcysteine 0.750 7 SWW (2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid 0.750 8 ESD (2-amino-ethylsulfanyl)-acetic acid 0.727 9 X79 (prop-2-ynylthio)acetic acid 0.727 10 X7K 2-(cyanomethylthio)acetic acid 0.727 11 X7Q (allylthio)acetic acid 0.727