... (mostly Schisandrol A, Schisandrin A) Specification 1%, 2%, 5%, 9% Schisandrins HPLC,10:1 Test Method HPLC Case No ... 3,4)cycloocta(1,2-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 ... to some extent as esters, amony them those of angelic acid, benzoic acid and acetic acid2. Schisandrin A (deoxyschizandrin), Schisandrin C3. ...