68797-52-4 Ammonium alpha-hydroxy-3,4-dimethoxytoluene-alpha-sulphonate Benzenemethanesulfonic acid, alpha-hydroxy-3,4-dimethoxy-, monoammonium salt EINECS 272-303-8 alpha-Hydroxy-3,4-dimethoxybenzenemethanesulfonic acid, monoammonium salt