1-((3,4-Dihydro-6-oxo-2H-pyrimido(2,1-b)quinazolin-1(6H)-yl)acetyl)piperidine 160776-58-9 Piperidine, 1-((3,4-dihydro-6-oxo-2H-pyrimido(2,1-b)quinazolin-1(6H)-yl)acetyl)-