Research Article

Systematic Evaluation of Chromatographic Parameters for Isoquinoline Alkaloids on XB-C18 Core-Shell Column Using Different Mobile Phase Compositions

Figure 4

Example of an HPLC-DAD chromatogram of extracts from different parts of C. majus: (b) roots, (c) fruits, and (d) herbs and (a) standards of investigated alkaloids: (1) protopine, (2) allocryptopine, (3) chelidonine, (4) coptisine, (5) sanguinarine, (6) berberine, and (7) chelerythrine.