1 VSO Vinylsulphonic acid 1.000 2 ESA Ethanesulfonic acid 1.000 3 8X3 2-hydroxyethylsulfonic acid 0.857 4 9SB 2-bromanylethanesulfonic acid 0.857 5 COM 1-thioethanesulfonic acid 0.857 6 TAU 2-aminoethanesulfonic acid 0.857 7 ZLJ 2-chloroethane-1-sulfonic acid 0.857 8 03S Methanesulfonic acid 0.833 9 54O 3-hydroxypropane-1-sulfonic acid 0.750 10 A20 3-aminopropane-1-sulfonic acid 0.750 11 J6Z (2r)-butane-2-sulfonate 0.750 12 SAT Sulfoacetic acid 0.750 13 L2L Aminomethanesulfonic acid 0.714 14 R4W 1-methylsulfonylethane 0.714