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Journal of chromatographic science

Diode array detection and simultaneous quantitation of the coeluting atenolol-related synthetic route impurities, PPA-Diol.


PMID 1808216

Abstract

The diode array multichannel detector is used to acquire spectral information at specified intervals in the elution profile of atenolol and its related impurities for post-chromatographic data analysis. The applicability of a number of peak homogeneity testing methods, including spectral normalization, absorbance ratio, chromatographic derivatives, and spectral suppression (SS), are assessed for suitability in simultaneous determinations of the coeluting atenolol-related synthetic impurities, PPA-Diol. Spectral suppression displays a superior performance in comparison to all the other techniques in that both qualitative and quantitative information are acquired on the system.

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