2-Chloroaniline-4-sulfonic acid 3-Chlorosulfanilic acid 3-Chlorosulphanilic acid 4-Amino-3-chlorobenzenesulfonic acid 98-35-1 Benzenesulfonic acid, 4-amino-3-chloro- EINECS 202-660-7 NSC 59701 Sulfanilic acid, 3-chloro- (8CI)