Synonyms: BRN 4265053;2H-(1)Benzopyrano(4,3-c)pyridazin-3(4H)-one, 4a,5-dihydro-8,9-dimethoxy-;4a,5-Dihydro-8,9-dimethoxy-2H-(1)benzopyrano(4,3-c)pyridazin-3(4H)-one;AC1MIQ1F;LS-39870;8,9-dimethoxy-2,4,4a,5-tetrahydrochromeno[4,3-c]pyridazin-3-one;133414-53-6