73664-09-2 AMMONIUM, DIETHYLMETHYL(2-(4-METHYL-1-OXO-2H-PHTHALAZIN-2-YL)ETHYL)-, IODIDE Diethylmethyl(2-(4-methyl-1-oxo-2H-phthalazin-yl)ethyl)ammonium iodide HL 2158