Vitex negundo Leaf Dry Extract
DEFINITION
Vitex negundo Leaf Dry Extract consists of the dried leaves of Vitex negundo L. (Fam. Lamiaceae), commonly known as Chinese Chaste Tree or Five-Leaf Chaste Tree, by extraction with hydroalcoholic mixture. It contains NLT 2.5% of iridoid glycosides, calculated as the sum of agnuside and negundoside on the dried basis.
POTENTIAL CONFOUNDING MATERIALS
Vitex agnus-castus L.
Vitex rotundifolia L.f
Vitex trifolia L.
CONSTITUENTS OF INTEREST
Iridoid glycosides: Negundoside, nishindaside, and agnuside
IDENTIFICATION
• A. Thin-Layer Chromatography
Standard solution A: 3 mg/mL each of USP Negundoside RS...