Development and Validation of an Ion-Pair HPLC-UV Method for the Quantitation of Quinoline and Indoloquinoline Alkaloids in Herbal and Pharmaceutical Antimalarial Formulations

Figure 4

Multivariate data analysis of analytes contents in the quinine-based pharmaceutical antimalarial formulations. (a) Score plot from the principal component analysis showing some similarities and dissimilarities among the investigated products. Products with the same color symbols originate from the same manufacturer. (b) Dendrogram from hierarchical cluster analysis showing the clustering of the samples as determined from the contents of quinine and its related alkaloidal substances in the products.

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