4-11-00-00582 (Beilstein Handbook Reference) 4-HYDROXYPHENYLSULFONIC ACID 4-Hydroxybenzenesulfonic acid 4-Hydroxybenzenesulphonic acid 4-Phenolsulfonic acid 98-67-9 BRN 1869034 Benzenesulfonic acid, 4-hydroxy- Benzenesulfonic acid, p-hydroxy- EINECS 202-691-6 HSDB 5319 NSC 227908 Sulfocarbolic acid p-Hydroxybenzenesulfonic acid p-Phenolsulfonic acid p-Sulfophenol