2-Methyl-3-(2-(3,4-dihydro-2-methyl-4-oxo-3-quinazolinyl)ethyl)-4(3H)-quinazolinone 2-Methyl-3-(beta-(2'-methylchinazolinon-(4)-yl-(3'))aethyl)-chinazolinone(4) [German] 2519-64-4 4(3H)-Quinazolinone, 3,3'-(1,2-ethanediyl)bis(2-methyl- 4(3H)-Quinazolinone, 3,3'-ethylenebis(2-methyl- B 124 BRN 0841521