title: [Determination of the caffeine content in syrup vitamin B1 and glycerophosphate using the first derivative ratio method].
authors.forename: S S
authors.initials: SS
authors.lastname: Dong
authors.forename: P J
authors.initials: PJ
authors.lastname: Xu
authors.forename: D K
authors.initials: DK
authors.lastname: An
mesh_terms: D002110:Caffeine / Q000032:analysis*; D004339:Drug Compounding; D005994:Glycerophosphates / Q000032:analysis*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013831:Thiamine / Q000032:analysis*
chemical_list: D005994:Glycerophosphates; D012996:Solutions; D002110:Caffeine; D013831:Thiamine