2-(1-Piperazinyl)-4(1H)-quinazolinone monoacetate 2-Piperazino-3H-quinazolin-4-one monoacetate 22587-29-7 4(1H)-Quinazolinone, 2-(1-piperazinyl)-, monoacetate Centpiperalone Centpiperalone acetate NSC 327690