Packaging and storage— Preserve in well-closed,light-resistant containers,protected from moisture.

Labeling— The label states the Latin binomial and,following the official name,the part of the plant from which the article was derived.

USP Reference standards á11ñ— USP Formononetin RS.USP Powdered Red Clover Extract RS.

Botanic characteristics— Brownish red to greenish red;numerous long,sharp-pointed,unicellular,nonglandular hairs with thick,nonlignified walls,the latter somewhat roughened by slight centrifugal projections;smooth,nearly spheroidal pollen grains from 20to 48µm in diameter;fragments of epidermis with stomata,the latter from 13to 23µm in length;fragments containing sclerenchyma fibers with adherent crystal fibers containing monoclinic prisms of calcium oxalate that are up to 21µm in length.

Other requirements— It meets the requirements of the tests forIdentification,Microbial enumeration,Loss on drying,Total ash,Acid-insoluble ash,Water-soluble extractives,Pesticide residues,Heavy metals,andContent of isoflavones underRed Clover.

Expert Committee:(DSB)Dietary Supplements:Botanicals

USP28–NF23Page 2072

Phone Number:1-301-816-8343