3-(4-Hydroxy-1-piperazinylmethyl)-4(3H)-quinazolinone dihydrochloride 4(3H)-Quinazolinone, 3-(4-hydroxy-1-piperazinylmethyl)-, 2HCl 4(3H)-Quinazolinone, 3-(4-hydroxy-1-piperazinylmethyl)-, dihydrochloride 68638-38-0