2,2'-DIHYDROXY-4,4'-DIMETHOXY BENZOPHENONE-5-SULFONIC ACID SODIUM SALT 2,2'-DIHYDROXY-4,4'-DIMETHOXY-5-SULFOBENZOPHENONE SODIUM SALT sodium 2,2-dihydroxy-4,4-dimethoxybenzophenone-5-sulphonate sodium 4-hydroxy-5-(2-hydroxy-p-anisoyl)-2-methoxybenzenesulphonate Benzenesulfonic acid, 4-hydroxy-5-(2-hydroxy-4-methoxybenzoyl)-2-methoxy-, monosodium salt 4-Hydroxy-2-methoxy-5-(2-hydroxy-4-methoxybenzoyl)benzenesulfonic acid sodium salt 4-hydroxy-5-[(2-hydroxy-4-methoxyphenyl)-oxomethyl]-2-methoxybenzenesulfonic acid 2,2'-Dihydroxy-4,4'-dimethoxy benzophenone-5-sulfonic acid s