17730-53-9 4(1H)-Quinazolinone, 2,3-dihydro-1,3-dimethyl-2-thioxo- 5-24-07-00526 (Beilstein Handbook Reference) BRN 0178159 Dimethyl-1,3 oxo-4 thioxo-2 (1H,3H)quinazoline