title: [Studies on analysis of mixed anti-cold pharmaceutical preparations. IX. Application of countercurrent distribution method].
mesh_terms: D002110:Caffeine / Q000032:analysis*; D002744:Chlorpheniramine / Q000032:analysis*; D003061:Codeine / Q000032:analysis*; D003377:Countercurrent Distribution; D004809:Ephedrine / Q000032:analysis*; D008722:Methods; D012995:Solubility; D013806:Theophylline / Q000032:analysis*
chemical_list: D002110:Caffeine; D002744:Chlorpheniramine; D013806:Theophylline; D004809:Ephedrine; D003061:Codeine