1 TAU 2-aminoethanesulfonic acid 1.000 2 ESA Ethanesulfonic acid 0.857 3 VSO Vinylsulphonic acid 0.857 4 8X3 2-hydroxyethylsulfonic acid 0.750 5 9SB 2-bromanylethanesulfonic acid 0.750 6 COM 1-thioethanesulfonic acid 0.750 7 GHO (1r)-1-hydroxyethane-1-sulfonic acid 0.750 8 ZLJ 2-chloroethane-1-sulfonic acid 0.750 9 03S Methanesulfonic acid 0.714 10 00C 3-sulfo-D-alanine 0.700 11 OCS Cysteinesulfonic acid 0.700