2,3-Dihydro-9H-isoxazolo(3,2-b)chinazolin-9-on [German] 2,3-Dihydro-9H-isoxazolo(3,2-b)quinazolin-9-one 37795-69-0 9H-ISOXAZOLO(3,2-b)QUINAZOLIN-9-ONE, 2,3-DIHYDRO- BRN 1076660 NSC 294836 W 2429 W-2429