2(3H)-Quinazolinone (CAS NO.7471-58-1) is also named as 2(1H)-quinazolinone ; Quinazolin-2(1H)-one ; Quinazolin-2-ol ; 1,3-Naphthyridine-2 (1H)-one ; 2-Quinazolinone ; 2-Quinoxalone .