1769-25-1 2,3-Dimethyl-4(3H)-quinazolinone 2,3-Dimethyl-chinazolinone(4) [German] 4(3H)-Quinazolinone, 2,3-dimethyl- 5-24-03-00127 (Beilstein Handbook Reference) B 265 BRN 0131970 Dimethylquinazolone NSC 401262