Polygonum multiflorum Root Dry Extract

DEFINITION

The article is prepared from the dried root of Polygonum multiflorum Thunb. (Family Polygonaceae), collected in autumn or winter, by extraction with a mixture of alcohol and water (7:3). The ratio of starting crude plant material to Dry Extract is about 5:1. It contains NLT 90.0% and NMT 110.0% of the labeled amount of 2,3,5,4'-tetrahydroxystilbene-2-O-β-d-glucoside (C₂₀H₂₂O₉); NLT 90.0% and NMT 110.0% of the labeled amount of total anthraquinones, calculated as the sum of emodin-8-O-β-d-glucoside (C₂₁H₂₀O₁₀), physcion-8-O-β-d-glucoside (C₂₂H₂₂O₁₀), emodin (C₁₅H₁₀O...