KnowraPapaverineLinked fromLinked fromThe 3 pages that link to Papaverine, each with the reason it gives.All 3Broader topic 2Compared with 1Robert RobinsonBroader topic: Its structural investigation formed part of Robinson’s broader study of opium alkaloids.IsoquinolineBroader topic: Its structure contains an isoquinoline-derived framework.ThebaineCompared with: It occurs in the same plant but acts through a different pharmacological pathway.