DC- und HPLC-Analyse der Pyrrolizidin-N-oxid-Alkaloide von Symphyti Radix
1981
: A new TLC- and HPLC-method for the detection and estimation of the main alkaloids from Symphytum roots, Symphytine, Echimidine, Lycopsamine, and Acetyllycopsamine in their genuine N-oxide form is described. The method provides characteristic finger-prints for the constituents of the Symphytum drugs of different origin and varying harvest seasons.
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