(2-Hydroxyethyl)(methyl)(2-(stearoyloxy)ethyl)ammonium methyl sulphate 63833-73-8 EINECS 264-499-9 Methyl bis (2-hydroxyethyl) stearoyl ammonium sulfate Octadecanoic acid, 2-((2-hydroxyethyl)methylamino)ethyl ester, methyl sulfate (salt)