Fayed AS, Hegazy MA, Kamel EB, Eissa MS. Three Smart and Original Spectrophotometric Data Processing Ratio Techniques for Resolving the Partial Overlapped Spectra of the Binary Antiviral Mixture Daclatasvir/Sofosbuvir: Application to Combined Dosage Form Darvoni® Tablets.
J AOAC Int 2021;
105:612-622. [PMID:
34623450 DOI:
10.1093/jaoacint/qsab134]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/26/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND
The combination of Daclatasvir (DCV) and sofosbuvir (SFV) is now widely used as an ideal treatment for hepatitis C virus infection. For this purpose, simple, sensitive, rapid and smart spectrophotometric methods were developed and validated for the determination of these drugs in their combined dosage form.
OBJECTIVE
Development οf smart, sensitive, cheap spectrοphοtοmetric methοds fοr determinatiοn (DCV) and (SFV) in their combined dosage.
METHODS
Ratio subtraction (RS) and amplitude modulation (AM) and mean centering spectrophotometric methods were established and validated for the estimation of sofosbuvir (SFV) in existence of daclatasvir without previous separation, utilizing unified regression equation.
RESULTS
A linearity limit of 2.5-25.0 µg/mL was confirmed for the direct measurement of daclatasvir at 316 nm (because there is no interference from sofosbuvir). Linearity was confirmed over a concentration limit of 10.0-80.0 µg/mL for sofosbuvir. The current methods were established as stated by the ICH recommendations and by testing synthetic mixtures of both drugs, the specificity was examined. They were tested on their tablet dosage form and good recovery was obtained.
CONCLUSIONS
The current methods were tested on their tablet dosage form and good recovery was obtained. A statistical study has been established among the current ratio approaches and a published methods and there was no apparent statistical variation was obtained.
HIGHLIGHTS
Both antiviral agents can be quantified in existence of each other by the current methods, which is a great time and cost-saving valor of the developed methods. This valor is even more important in the case of the combined dosage form (Darvoni® tablets) to the pharmaceutical market.
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