2-Nitro-toluol-4-sulfonsaeure, 2-Nitro-toluol-sulfonsaeure-(4), 2-nitro-p-toluenesulfonic acid, 4-methyl-3-nitro-benzenesulfonic acid, EINECS 202-556-1, 2-nitro-toluene-4-sulfonic acid, 2-Nitro-p-toluenesulphonic acid, 4-Methyl-3-nitrobenzensulfonic acid