Powdered Echinacea pallida Extract
DEFINITION
Powdered Echinacea pallida Extract is prepared from Echinacea pallida roots by extraction with hydroalcoholic mixtures or other suitable solvents. The ratio of the starting crude plant material to Powdered Extract is between 2:1 and 8:1. It contains NLT 4.0% and NMT 5.0% of total phenols, calculated as the sum of caftaric acid (C13H12O9), chicoric acid (C22H18O12), chlorogenic acid (C16H18O9), and echinacoside (C35H46O20), on the dried basis.
USP REFERENCE STANDARDS FOR PURCHASE
USP Caftaric Acid RSUSP Chicoric Acid RS
USP Chlorogenic Acid RS
USP Echinacoside RS
USP Powdered Echinacea pallida Extract RS
USP β-Sitosterol RS