title: Application of difference spectrophotometry to the nitrosation reaction in the assay of certain antipyretic drugs.
mesh_terms: D000082:Acetaminophen / Q000032:analysis; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D009603:Nitroso Compounds / Q000138:chemical synthesis*; D010113:Oxyphenbutazone / Q000032:analysis; D012457:Salicylamides / Q000032:analysis; D013056:Spectrophotometry, Ultraviolet; D013607:Tablets
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D009603:Nitroso Compounds; D012457:Salicylamides; D013607:Tablets; D000082:Acetaminophen; C031060:salicylamide; D010113:Oxyphenbutazone