17-120A 19402-64-3 20199-75-1 4-11-00-00027 (Beilstein Handbook Reference) 515-42-4 7645-18-3 934-54-3 934-55-4 98-11-3 AI3-15297 BENZENESULFONIC ACID BRN 0742513 Benzene sulphonic acid Benzenemonosulfonic acid Benzenesulphonic acid Besylic acid CCRIS 4595 EINECS 202-638-7 HSDB 2642 Kyselina benzensulfonova [Czech] Phenylsulfonic acid