Murali Krishnam Raju P, Shyamala P, Venkata Narayana B, Kondra S, Mantena BPV. Assay of tirofiban and identification of oxidative impurity in aqueous injection by using UPLC-PDA/QDa detectors.
Ann Pharm Fr 2021;
80:35-47. [PMID:
34153240 DOI:
10.1016/j.pharma.2021.06.002]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 11/19/2022]
Abstract
The basic objective of this study is to propose a short, reliable, mass compatible ultra-performance liquid chromatography (UPLC) method to confirm the identity of impurities and to estimate the assay and purity of Tirofiban simultaneously in aqueous injection (5mg/100mL bag). Aqueous formulations are susceptible to oxidation, hence the possible oxidative degradation impurities of Tirofiban were studied in this experiment by using UPLC coupled with photodiode array/Quadrupole Dalton Analyzer (PDA/QDa) detectors. The required separations were achieved in the column: ACQUITY HSS T3 (100×2.1) mm, 1.7μm, operated at 30°C by using 0.02% Triethyl amine (TEA) in water, pH 2.8 with formic acid as solution-A and 0.1% formic acid in 9:1 acetonitrile, water as solution-B. Binary gradient flow is delivered at the rate of 0.5mL/min and the detection of impurities specifically carried out at 227nm using empower3 software. RP-UPLC/PDA with QDa detector was used for the experiment. The method was linear and accurate from the concentrations: 0.04 to 0.38μg/mL for impurity-A and 0.04 to 75μg/mL for Tirofiban. The major unknown degradation impurity generated during the oxidative degradation has been identified as N-oxide derivative (Impurity-B) [(M+H)+ 455.1] by using QDa detector operated in an electro spray positive ion mode by applying a voltage of 0.8kV. This method was further validated as per ICH Q2 (R2) guidelines. Hence, the proposed method is said to be a fast, sensitive and comprehensive technique, which could give a clear idea about the assay and impurity profile of Tirofiban injection.
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