4-11-00-00107 (Beilstein Handbook Reference) 4-CHLOROBENZENESULFONIC ACID 4-Chlorobenzenesulphonic acid 98-66-8 AI3-50012 BRN 2209486 Benzenesulfonic acid, 4-chloro- Benzenesulfonic acid, p-chloro- EINECS 202-690-0 p-Chlorobenzenesulfonic acid p-Chlorophenylsulfonic acid