Synonyms: Benzenesulfonicacid, 2-formyl-, sodium salt (9CI);Benzenesulfonic acid, o-formyl-, sodiumsalt (7CI,8CI);2-Sulfobenzaldehyde,sodium salt;Benzaldehyde-2-sulfonic acid sodium salt;Benzaldehyde-o-sulfonicacid sodium salt;Sodium 2-formylbenzenesulfonate;Sodiumbenzaldehyde-2-sulfonate;Sodium o-benzaldehyde sulfonate;Sodiumo-formylbenzenesulfonate;o-Formylbenzenesulfonic acid sodium salt;Benzenesulfonic acid,2-formyl-, sodium salt (1:1);