In vitro activity: The linear ranges 8.0-1.6 ×103 ng/mL for Clorprenaline in a single chromatographic run, the detection limits 3.0 ng/mL for Clorprenaline. Clorprenaline is a bronchodilator that has been separated by CE based on affinity-interaction or with charged CD-CZE sulfobuthylether (SBE)-β-CD or β-CD-phosphate with resolution greater than 1.2. Clorprenaline is separated in optimum condition of 60 mM HP-β-CD. Clorprenaline hydrochloride (a), bromhexine hydrochloride (b) and decloxizine hydrochloride (c) are three main components in clorprenaline compound tablet.