19473-05-3 Benzenemethanesulfonic acid, alpha,4-dihydroxy-3-methoxy-, monosodium salt EINECS 243-093-5 Sodium alpha,4-dihydroxy-3-methoxytoluene-alpha-sulphonate Vanillin bisulfite, monosodium salt alpha-Toluenesulfonic acid, alpha,4-dihydroxy-3-methoxy-, monosodium salt