25505-97-9 3,4,6-Trimethylisoxazolo(3,4-d)pyridazin-7(6H)-one 3,4,6-Trimetilisossazolo(3,4-d)piridazin-7-one [Italian] BRN 1106570 ISOXAZOLO(3,4-d)PYRIDAZIN-7(6H)-ONE, 3,4,6-TRIMETHYL-