2024
DOI: 10.1002/sscp.202300245
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Trace determination of genotoxic impurity p‐toluene sulfonate alkyl esters in four active pharmaceutical ingredients by using on‐line column switching liquid chromatography

Yifei Jiang,
Xuejia Zhao,
Shengnan Sun
et al.

Abstract: Sulfonate esters, one of the genetic impurities, have gained significant attention in recent years due to their potential to cause genetic mutations and cancer. In this study, we reported a novel on‐line column‐switching liquid chromatography method for the quantitative analysis of three p‐toluene sulfonate alkyl esters in active pharmaceutical ingredients (APIs). The sensitivity was improved by large‐volume injection. A diluting modulation‐based sampling procedure was specifically devised to mitigate the impa… Show more

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