title: Determination of piperazine in pharmaceutical drug substances using capillary electrophoresis with indirect UV detection.
abstract: A fast, selective capillary electrophoresis (CE) method was developed for piperazine counter-ion analysis and applied to the analysis of an active pharmaceutical ingredient (API) that exists as a hemipiperazine salt. Due to the poor chromophore, the detection method chosen was indirect UV detection using benzylamine as the UV absorbing probe. Piperazine quantitation was performed using diethylamine as an internal standard and the method was validated for specificity, linearity, precision, and accuracy. The results indicate the method is suitable for piperazine counter-ion analysis in support of salt form characterization.
authors.affiliation: Lilly Analytical Research Laboratory, Eli Lilly Canada Inc., 3650 Danforth Avenue, Toronto, Ont., Canada M1N 2E8.
authors.forename: Chris M
authors.initials: CM
authors.lastname: Denis
authors.forename: Nicole E
authors.initials: NE
authors.lastname: Baryla
mesh_terms: D000969:Antinematodal Agents / Q000032:analysis* / Q000737:chemistry; D001596:Benzylamines / Q000737:chemistry; D019075:Electrophoresis, Capillary / Q000379:methods*; D004364:Pharmaceutical Preparations / Q000032:analysis* / Q000737:chemistry; D000077489:Piperazine; D010879:Piperazines / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D000969:Antinematodal Agents; D001596:Benzylamines; D004364:Pharmaceutical Preparations; D010879:Piperazines; D000077489:Piperazine; C030796:benzylamine