13987-03-6 Avafortan Avapyrazone Benzeneacetic acid, alpha-((2-(diethylamino)ethyl)amino)-, 3-methylbutyl ester, compd. with ((2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)methylamino)methanesulfonic acid monosodium salt (1:2)