Abstract
The principal aim of this study was to optimize analytical methodology based on mass spectrometry for the evaluation of the quality of recombinant human insulin and its analogs. In this study ESI-MS was used to assess the quality of human insulin, short acting insulin analogs, insulin lispro, insulin aspart and insulin glulisine and long acting analogs including insulin glargine, insulin degludec, and insulin detemir, in respective pharmaceutical formulations. In this study, with the aimed to optimize analytical conditions, different factors influencing the analytical performance such as pH, ionic strength, sample dilution, organic solvent addition were addressed. The study results demonstrated that MS is a suitable technique for the analysis of biotechnological compounds like insulin and its analogs. Although the obtained results provide an important information regarding this methodology, further studies are needed to validate this analytical approach and check for its suitability to be used in the regulatory environment.
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