title: Comparison of electrospray ionization mass spectrometry and evaporative light scattering detections for the determination of Poloxamer 188 in itraconazole injectable formulation.
abstract: A high performance liquid chromatography (HPLC) method for Poloxamer 188 using size-exclusion chromatography (SEC) was developed and two different detection mechanisms, evaporative light scattering (ELSD) and electrospray ionization mass spectrometry (ESI-MS), were compared for their quantification capabilities in itraconazole formulation. Both detection techniques coupled with SEC separation were highly effective for the determination of Poloxamer 188, which is difficult to analyze by other common HPLC methods. As expected, ESI-MS detection provided sensitivity and selectivity superior to ELSD. But since the analyte is an excipient in the formulation, high sensitivity was not required and ELSD's simplicity and ruggedness made it more appropriate for routine analysis of this formulation.
authors.affiliation: Medication Delivery, Baxter Healthcare, Round Lake, IL 60073, USA. lakshmy_nair@baxter.com
authors.forename: Lakshmy M
authors.initials: LM
authors.lastname: Nair
authors.forename: Jamie
authors.initials: J
authors.lastname: Konkel
authors.forename: Mary
authors.initials: M
authors.lastname: Thomas
authors.forename: Michael
authors.initials: M
authors.lastname: Koberda
mesh_terms: D002850:Chromatography, Gel; D017964:Itraconazole / Q000032:analysis*; D008027:Light; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D020442:Poloxamer / Q000032:analysis*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D004364:Pharmaceutical Preparations; D020442:Poloxamer; D017964:Itraconazole