25506-01-8 3-Metil-4,6-difenilisossazolo(3,4-d)piridazin-7-one [Italian] 4,6-Diphenyl-3-methylisoxazolo(3,4-d)pyridazin-7(6H)-one BRN 1146202 ISOXAZOLO(3,4-d)PYRIDAZIN-7(6H)-ONE, 4,6-DIPHENYL-3-METHYL-