165611-04-1 3-Carbamido-7-phenylisoxazolo(4,5-d)pyrimidine 6-N-oxide 7-Phenylisoxazolo(4,5-d)pyrimidine-3-carboxamide 6-oxide Isoxazolo(4,5-d)pyrimidine-3-carboxamide, 7-phenyl-, 6-oxide