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Quantitative determination of salbutamol sulfate impurities using achiral supercritical fluid chromatography

Clarke, Adrian, Kotoni, Dorina, Dispas, Amandine, Guillarme, Davy, Hubert, Philippe, Desfontaine, Vincent and Lebrun, Pierre (2017) Quantitative determination of salbutamol sulfate impurities using achiral supercritical fluid chromatography. Journal of Pharmaceutical and Biomedical Analysis, 134. pp. 170-180.


In the last years, supercritical fluid chromatography has largely been acknowledged as a singular and performing technique in the field of separation sciences. Recent studies highlighted the interest of SFC for the quality control of pharmaceuticals, especially in the case of the determination of the active pharmaceutical ingredient (API).
Nevertheless, quality control requires also the determination of impurities. The objectives of the present work were to: i) demonstrate the interest of SFC as a reference technique for the determination of impurities in salbutamol sulfate API and ii) to propose an alternative to a reference HPLC method from the European Pharmacopeia (EP) involving ion-pairing reagent. Firstly, a screening was carried out to select the most adequate and selective stationary phase.
Secondly, in the context of robust optimization strategy, the method was developed using design space methodology.
The separation of salbutamol sulfate and related impurities was achieved in 7 minutes, which is seven times faster than the LC-UV method proposed by European Pharmacopeia (total run time of 50 minutes). Finally, full validation using accuracy profile approach was successfully achieved for the determination of impurities B, D, F and G in salbutamol sulfate raw material. The validated dosing range covered 50 to 150 % of the targeted concentration (corresponding to 0.3 % concentration level), LODs close to 0.5 μg/mL were estimated. The SFC method proposed in
this study could be presented as a suitable fast alternative to EP LC method for the quantitative determination of salbutamol impurities

Item Type: Article
Date Deposited: 05 Apr 2017 00:45
Last Modified: 05 Apr 2017 00:45


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