4-chloro-5-[2-[[3-(2-chlorophenoxy)-2-hydroxypropyl]amino]ethylamino]-2H-pyridazin-3-one 4-chloro-5-[2-[[3-(2-chlorophenoxy)-2-hydroxy-propyl]amino]ethylamino]-2H-pyridazin-3-one 83395-21-5 Ridazolol Ridazolol [INN] Ridazololum [Latin] (+-)-4-Chloro-5-((2-((3-(o-chlorophenoxy)-2-hydroxypropyl)amino)ethyl)amino)-3(2H)-pyridazinone (RS)-4-Chlor-5-(2-(3-(2-chlorphenoxy)-2-hydroxypropylamino)ethylamino)-3(2H)-pyridazinon