133414-49-0 Acetamide, N-(3,4,4a,5-tetrahydro-3-oxo-2H-(1)benzopyrano(4,3-c)pyridazin-9-yl)- BRN 4263735 N-(3,4,4a,5-Tetrahydro-3-oxo-2H-(1)benzopyrano(4,3-c)pyridazin-9-yl)acetamide