DEFINITION

Siler Root Powder consists of the dried roots of Saposhnikovia divaricata (Turcz. ex Ledeb.) Schischk. (Fam. Apiaceae) reduced to a fine or very fine powder. The roots are collected in spring or autumn before or after the growth of flowering stems, and rootlets are removed. It contains NLT 0.32% of total chromones calculated as the sum of prim-O-glucosylcimifugin (C₂₂H₂₈O₁₁), cimifugin (C₁₆H₁₈O₆), 5-O-methylvisammioside (C₂₂H₂₈O₁₀), and sec-O-glucosylhamaudol (C₂₁H₂₆O₁₀), and NLT 0.18% of the sum of prim-O-glucosylcimifugin and cimifugin, all on the dried basis.