1-(2-((3,4-Dihydro-4-oxo-3-phenyl-2-quinazolinyl)thio)ethyl)-1-methylpiperidinium iodide 15589-21-6 Piperidinium, 1-(2-((3,4-dihydro-4-oxo-3-phenyl-2-quinazolinyl)thio)ethyl)-1-methyl-, iodide