Evaluation of the RP-LC method for determining the p Ka of abiraterone and its assay

Sanl S., Şahin M. C., Özdemir A., Pa B.

Acta Chromatographica, vol.36, no.4, pp.355-362, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 4
  • Publication Date: 2024
  • Doi Number: 10.1556/1326.2023.01173
  • Journal Name: Acta Chromatographica
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Biotechnology Research Abstracts, CAB Abstracts, Veterinary Science Database
  • Page Numbers: pp.355-362
  • Keywords: abiraterone acetate, human urine, internal standard, nonlinear regression, pKa values
  • Uşak University Affiliated: Yes

Abstract

A straightforward, dependable, and quick RP-LC method for the analysis of abiraterone acetate in its dose form and human urine has been devised. With DAD detection, sensitivity was reported to be high. The LOD and LOQ of the procedure were deemed adequate. The suggested approach was exhaustively validated in accordance with ICH requirements, and the findings demonstrated that it was exact, accurate, selective, and sensitive for the analysis of this pharmaceutical. The chromatographic separation was realized using a X-Terra RP-18 (150 × 4.60 mm i.d. × 5 μm) column and a UV detector set at 255 and 267 nm. In addition, pKa values were calculated based on the relationship between the retention factor and the pH of the mobile phase. The influence of the composition of the mobile phase on the ionization constant was investigated by measuring the pKa at various acetonitrile-water combinations ranging from 50 to 70% (v/v).