title: Selective separation and characterisation of stress degradation products and process impurities of prucalopride succinate by LC-QTOF-MS/MS.
abstract: The present study reports the degradation behaviour of a new prokinetic agent, Prucalopride succinate, under various stress conditions as per International Conference on Harmonization guidelines (ICH, Q1A (R2)). The investigation involved monitoring decomposition of the drug under hydrolytic (acidic, basic and neutral), oxidative, photolytic and thermal stress conditions followed by characterization of the degradation products (DPs) and process related impurities (IMPs). A rapid, precise, accurate and robust reverse phase high performance liquid chromatography (RP-HPLC) method has been developed involving mobile phase of 20mM ammonium bicarbonate buffer and acetonitrile: methanol (80:20v/v) on a Waters Xbridge-C8 (150mm×4.6mm i.d., 3.5μm) column using gradient elution. The drug was found to be degraded in hydrolytic (acidic) and oxidative conditions, whereas it was stable under basic and neutral hydrolytic, photolytic and thermal stress conditions. The method was extended to LC-ESI-QTOF-MS/MS for the structural characterization of DPs and process related IMPs. Structural characterization was carried out based on the generated molecular formula of DPs and its fragment ions. It has been observed that two major DPs were formed under each acid hydrolysis and oxidative stress conditions. The most probable mechanisms involved in the formation of DPs were also proposed. Finally, the method was validated in the term of specificity, linearity, accuracy, precision, and robustness as per ICH guidelines, Q2 (R1).
authors.affiliation: Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Balanagar, Hyderabad, Telangana 500 037, India.
authors.forename: Baira Shandilya
authors.initials: BS
authors.lastname: Mahamuni
authors.affiliation: United States Pharmacopeia (USP) India Pvt. Ltd., Hyderabad-500078, Telangana, India.
authors.forename: Anupama
authors.initials: A
authors.lastname: Jajula
authors.affiliation: United States Pharmacopeia (USP) India Pvt. Ltd., Hyderabad-500078, Telangana, India. Electronic address: atulawasthi@outlook.com.
authors.forename: Atul
authors.initials: A
authors.lastname: Awasthi
authors.affiliation: Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Balanagar, Hyderabad, Telangana 500 037, India.
authors.forename: Pradipbhai D
authors.initials: PD
authors.lastname: Kalariya
authors.affiliation: Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education & Research, Balanagar, Hyderabad, Telangana 500 037, India.
authors.forename: M V N Kumar
authors.initials: MV
authors.lastname: Talluri
mesh_terms: D001572:Benzofurans / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D018384:Oxidative Stress; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D001572:Benzofurans; C406662:prucalopride
keywords: Degradation products; LC/ESI/QTOF/MS/MS; Process impurities; Prucalopride succinate