1,5-dihydro-7-(1-piperidinyl)-imidazo(2,1-b)quinazolin-2(3H)-one 7-(1-Piperidinyl)-1,2,3,5-tetrahydroimidazo(2,1-b)quinazolin-2-one 96086-67-8 96086-68-9 DN 9693 DN-9693 Imidazo(2,1-b)quinazolin-2(3H)-one, 1,5-dihydro-7-(1-piperidinyl)-