title: [Determination of paracetmol caffeine and ephedrine hydrochloride in likeshu capsules].
abstract: Paracetamol (P), caffeine (C) and ephedrine hydrochloride (EH) are there physiological active component in Likeshu capsules. We have proposed the determination method of these three components using extractive separation-spectrophotometry. Only one amount weighed of sample is required to determine them. The recoveries of P, C and EH were 97.51 +/- 0.64% (n = 9), 98.24 +/- 1.04% (n = 8) and 98.58 +/- 1.09% (n = 9) respectively. The results of determination of samples agreed with those of the HPLC method. This method is sensitive, accurate and simple. The other ingredients of Likeshu capsules do not interfere.
authors.forename: C
authors.initials: C
authors.lastname: Wu
authors.forename: Z
authors.initials: Z
authors.lastname: Zhou
authors.forename: H
authors.initials: H
authors.lastname: Zhao
mesh_terms: D000082:Acetaminophen / Q000032:analysis*; D000890:Anti-Infective Agents / Q000737:chemistry*; D002110:Caffeine / Q000032:analysis*; D002214:Capsules; D004338:Drug Combinations; D004809:Ephedrine / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000890:Anti-Infective Agents; D002214:Capsules; D004338:Drug Combinations; D000082:Acetaminophen; D002110:Caffeine; D004809:Ephedrine