1 PMB Para-mercury-benzenesulfonic acid 1.000 2 BNS Benzenesulfonic acid 0.909 3 TSU Para-toluene sulfonate 0.833 4 VXC 4-bromanylbenzenesulfonic acid 0.833 5 VXN 4-chloranylbenzenesulfonic acid 0.833 6 4SX 3,4-dihydroxybenzenesulfonic acid 0.769 7 DBX 2,5-dihydroxybenzenesulfonic acid 0.769 8 VWT 4-cyanobenzenesulfonic acid 0.769 9 FB2 Benzenesulfonamide 0.750 10 VXH Pyridine-3-sulfonic acid 0.750 11 6OR 3,5-dichloro-4-hydroxybenzene-1-sulfonic acid 0.714 12 JAT 4-(2-azanylethyl)benzenesulfonic acid 0.714 13 VWI 4-nitrobenzenesulfonic acid 0.714 14 XXG 3,3-dihydroxy-4-oxocyclohexa-1,5-diene-1-sulfonic acid 0.714