title: A note on the quantitative determination of ephedrine sulfate when compounded with phenobarbital elixir U.S.P.
mesh_terms: D004396:Coloring Agents; D004304:Dosage Forms; D004809:Ephedrine / Q000032:analysis*; D008722:Methods; D010602:Pharmacopoeias as Topic; D010634:Phenobarbital / Q000032:analysis*; D013053:Spectrophotometry; D013431:Sulfates / Q000032:analysis*; D014481:United States
chemical_list: D004396:Coloring Agents; D004304:Dosage Forms; D013431:Sulfates; D004809:Ephedrine; D010634:Phenobarbital