2-((p-Aminophenyl)sulphonyl)ethyl hydrogensulphate 2494-89-5 4-((2-Sulfatoethyl)sulfonyl)aniline EINECS 219-669-7 Ethanol, 2-((4-aminophenyl)sulfonyl)-, hydrogen sulfate (ester) Ethanol, 2-sulfanilyl-, hydrogen sulfate (ester)