4-(2-Hydroxyethylamino)-1,1-dioxotetrahydro-1-lambda*6*-thiophen-3-ol4-(2-Hydroxy-ethylamino)-1,1-dioxo-tetrahydro-146-thiophen-3-ol4-[(2-Hydroxyethyl)amino]tetrahydrothiophene-3-ol 1,1-dioxide hydrochloride4-[(2-Hydroxyethyl)amino]tetrahydrothiophene-3-ol 1,1-dioxide4-[(2-hydroxyethyl)amino]tetrahydrothiophene-3-ol 1,1-dioxide3-hydroxy-4-[(2-hydroxyethyl)amino]-1$l^{6}-thiolane-1,1-dione