title: [Quantitative determination of l- and d-psi-ephedrine in Ephedra spp. by thin-layer chromatography (author's transl)].
mesh_terms: D002855:Chromatography, Thin Layer; D004809:Ephedrine / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000032:analysis*
chemical_list: D004809:Ephedrine