Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 214, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpba.2022.114715
Keywords
Evocalcet; Process-related impurities; Isolation; Synthesis; Identification; Method validation
Categories
Funding
- Science and Technology Department of Hebei Province of China [20372607D, 20374801D]
- Department of Education of Hebei Province of China [ZD2020164, ZD2021313]
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This study reported on the identification and characterization of 11 process-related impurities in the preparation of Evocalcet, as well as discussed the possible formation pathways and synthetic methods of 10 of these impurities.
Evocalcet is a calcimimetic for the treatment of secondary hyperparathyroidism. In the preparation of evocalcet, eleven process-related impurities were detected in the reaction solution of the last step at levels of 0.05%2.50% by a new HPLC method. Ten impurities were separated from the enriched mother liquor and synthesized directly. These impurities were characterized and identified by HRMS and NMR spectra and then coinjected with commercial products to confirm their retention times in HPLC. The possible formation pathways and synthetic methods of ten process-related impurities ware discussed in detail.
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