19802-94-9 AMMONIUM, DIETHYL(2-HYDROXYETHYL)METHYL-, IODIDE, 3,4-DIPHENYL-2,5-THIOPHENEDICA Ammonium, diethyl(2-hydroxyethyl)methyl-, iodide, 3,4-diphenyl-2,5-thiophenedicarboxylate(2:1) Diethyl(2-hydroxyethyl)methylammonium iodide 3,4-diphenyl-2,5-thiophenedicarboxylate (2:1)