1 4SX 3,4-dihydroxybenzenesulfonic acid 1.000 2 XXG 3,3-dihydroxy-4-oxocyclohexa-1,5-diene-1-sulfonic acid 0.923 3 DBX 2,5-dihydroxybenzenesulfonic acid 0.846 4 BNS Benzenesulfonic acid 0.833 5 6OR 3,5-dichloro-4-hydroxybenzene-1-sulfonic acid 0.786 6 K4N 4-oxidanylbenzenesulfonamide 0.769 7 PMB Para-mercury-benzenesulfonic acid 0.769 8 TSU Para-toluene sulfonate 0.769 9 VXC 4-bromanylbenzenesulfonic acid 0.769 10 VXN 4-chloranylbenzenesulfonic acid 0.769 11 QB6 3-azanyl-4-oxidanyl-benzenesulfonamide 0.714 12 VWT 4-cyanobenzenesulfonic acid 0.714