1,3-Dihydro-4-(2-(dipropylamino)ethyl)-2H-indol-2-one monohydrochloride 2(H)-Indol-2-one, 4-(2-(dipropylamino)ethyl)-1,3-dihydro-, monohydrochloride 4-(2-(Dipropylamino)ethyl)-2-indolinone monohydrochloride 91374-20-8 91374-21-9 ReQuip Ropinirole hydrochloride Ropinirole hydrochloride [USAN] SK&F 101468-A