... A, Schisandrin A) Specification 1%, 2%, 5%, 9% Schisandrins HPLC,10:1 Test ... 2-f)(1,3)benzodioxole,5,6,7,8-tetrahydro-1,2,3,13-tetram; or 5,6,7,8-Tetrahydro-1,2,3 ... ,13-tetramethoxy-6,7-dimethyl-, stereoisomer Benzo [3 ... ,4] cycloocta [1,2-f][1,3 ...