(+-)-erythro-8-Hydroxy-5-(1-hydroxy-2-(isopropylamino)butyl)carbostyril monohydrochloride 2(1H)-Quinolinone, 8-hydroxy-5-(1-hydroxy-2-((1-methylethyl)amino)butyl)-, monohydrochloride, (R*,S*), (+-)- 59828-07-8 60443-17-6 CI 888 PROCATEROL HYDROCHLORIDE Pro-Air Procaterol hydrochloride [USAN:JAN]