19976-53-5 AMMONIUM, DIETHYL(2-HYDROXYETHYL)METHYL-, IODIDE, PHENANTHRO(9,10-c)THIOPHENE-1, Ammonium, diethyl(2-hydroxyethyl)methyl-, iodide, phenanthro(9,10-c)thiophene-1,3-dicarboxylate (2:1)