4-((Ethylanilino)methyl)benzenesulphonic acid 92-60-4 Benzenesulfonic acid, 4-((ethylphenylamino)methyl)- EINECS 202-170-3 NSC 8644 alpha-(N-Ethylanilino)-p-toluenesulfonic acid p-Toluenesulfonic acid, alpha-(N-ethylanilino)- (8CI)