3-Sulfo-4-Aminophenylsulfonyl-beta-hydroxyethyl sulfate ester; Sulfo para Ester; Aniline-4-β-Ethyl Sulfonyl Sulfate-2-Sulfonic Acid; Sulfonated para position ester; 2-amino-5-{[2-(sulfooxy)ethyl]sulfonyl}benzenesulfonic acid; Aniline-4-Beta-Ethyl Sulfonyl Sulfate-2-Sulfonic Acid; Sulpho Para Base