title: Spectrophotometric determination of acetaminophen, phenylephrine hydrochloride, codeine phosphate, and pyrilamine maleate in tablets or powder.
mesh_terms: D000082:Acetaminophen / Q000032:analysis*; D000464:Alginates; D002626:Chemistry, Pharmaceutical; D002852:Chromatography, Ion Exchange; D003061:Codeine / Q000032:analysis*; D006634:Histamine H1 Antagonists / Q000032:analysis*; D006851:Hydrochloric Acid; D010656:Phenylephrine / Q000032:analysis*; D010710:Phosphates; D011208:Powders / Q000032:analysis; D013053:Spectrophotometry; D013607:Tablets / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D000464:Alginates; D006634:Histamine H1 Antagonists; D010710:Phosphates; D011208:Powders; D013607:Tablets; D010656:Phenylephrine; D000082:Acetaminophen; D006851:Hydrochloric Acid; D003061:Codeine