159850-73-4 3-Benzoyl-5-methyl-6,7-dihydroisoxazolo(4,3-d)pyrimidin-7-one 3-Benzoyl-5-methylisoxazolo(4,3-d)pyrimidin-7(6H)-one Isoxazolo(4,3-d)pyrimidin-7(6H)-one, 3-benzoyl-5-methyl-