Different stability‐indicating chromatographic methods for specific determination of paracetamol, dantrolene sodium, their toxic impurities and degradation products

2019 ◽  
Vol 33 (9) ◽  
Author(s):  
Nada S. Abdelwahab ◽  
Maha M. Abdelrahman ◽  
John M. Boshra ◽  
Ahmed A. Taha
Keyword(s):  
Degradation Products ◽  
Dantrolene Sodium ◽  
Stability Indicating ◽  
Chromatographic Methods ◽  
Specific Determination

Development and Validation of Two Robust Stability-Indicating Chromatographic Methods for Determination of Metolazone in Drug Substance and Pharmaceutical Dosage Form in the Presence of Its Degradation Products and Characterization of Main Degradation Products Based on LC-MS

2019 ◽  
Vol 58 (3) ◽  
pp. 251-261
Author(s):  
Hala E Zaazaa ◽  
Rasha Abdel-Ghany ◽  
M Abdelkawy ◽  
Mahmoud Sayed
Keyword(s):  
Dosage Form ◽  
Degradation Products ◽  
Hplc Method ◽  
Drug Substance ◽  
Design Parameters ◽  
Pharmaceutical Dosage Form ◽  
Stability Indicating ◽  
Chromatographic Methods ◽  
Hptlc Method

Abstract Two robust and selective stability-indicating chromatographic methods were developed and validated for the determination of metolazone in drug substance and pharmaceutical dosage form in the presence of its degradation products. The HPLC method employed a Kromasil C18 (250 × 4.6,5 μm) column and a mobile phase of acetonitrile: 0.2% orthophosphoric acid (32:68 v/v) at a flow rate 2 mL/min and detection at 238 nm. The separation was performed in HPLC isocratic mode. The robustness of the suggested method was assessed using the Plackett–Burman design, parameters affecting system suitability were established and non-significant intervals for the significant parameters were considered. The HPTLC method employed Nano-SIL-20 UV254 HPTLC plates as adsorbent, ethyl acetate: toluene: acetic acid solution (4:4:0.5, v/v/v), as a developing solvent system and densitometric detection at 238 nm. Metolazone was exposed to different stress conditions, including acid and alkaline hydrolysis and oxidative and photolytic degradation. The main degradation products obtained have been characterized and interpreted based on LC-MS. The linearity of the suggested methods was proved in the concentration range of 20–75 μg/mL for the HPLC method and 100–900 ng/spot for the HPTLC method. The suggested methods were validated according to international conference on harmonization guidelines. These methods were successfully dedicated for the estimation of metolazone in drug substance and pharmaceutical dosage form in the presence of its degradation products. The results of the suggested methods were evaluated and compared statistically with results obtained by an official method without finding any significant difference.

scholarly journals Validated Stability Indicating Chromatographic Methods for Quantification of Imidocarb Dipropionate; Application for the Determination of Its Residues in Bovine Meat and Milk Samples

2020 ◽  
Vol 103 (4) ◽  
pp. 980-988
Author(s):  
Ghada AbdElHamid Sedik ◽  
Doha Mohamed Naguib ◽  
Fahima Morsy ◽  
Hala Elsayed Zaazaa
Keyword(s):  
Degradation Products ◽  
Reversed Phase ◽  
Hplc Method ◽  
Stability Indicating ◽  
Milk Samples ◽  
Chromatographic Methods ◽  
Ich Guidelines ◽  
Imidocarb Dipropionate ◽  
Tlc Plates

Abstract Background Imidocarb dipropionate (IMD) is an immunomodulator agent commonly used for treatment of anaplasmosis in cattle. Objective Thus, two sensitive, specific, and precise stability-indicating chromatographic methods have been developed, optimized, and validated for its determination in presence of its acid, alkaline, and oxidative stressed degradation products. Method The first method is based on separation of IMD and its forced induced degradation products on reversed phase cyano column using isocratic elution system consisted of sodium acetate buffer–methanol–acetonitrile (55: 30:15, v/v/v), pH 4.6 at a flow rate of 1.2 mL/min, and UV detection at 254 nm. The second method utilized TLC combined with densitometric determination of the separated bands at 254 nm. The separation was achieved using silica gel 60 F254 TLC plates with a mixture of ethyl acetate–methanol–ammonia–water (8.5:1:0.5:0.2, v/v/v/v) as a developing system. Results HPLC analysis was applied in range of 0.25–40 µg/mL with LOD of 0.073 µg/mL. While densitometric measurements showed linearity in the range of 0.1–1.8 µg/band with LOD of 0.02 µg/band. Conclusions The suggested methods were validated in compliance with the ICH guidelines and were successfully applied for determination of IMD in its commercial veterinary formulations with good recoveries. Furthermore, the proposed HPLC method was extended to the determination of IMD residues in bovine meat and milk samples Highlights Bovine meat, HPLC, Imidocarb dipropionate, Milk, TLC.

Kinetic study and peak purity determination of bupropion hydrochloride using RRLC/DAD and HPLC/MWD methods: stability study and application in pharmaceutical preparation and in synthetic mixtures with nicotine

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64274-64285 ◽  
Author(s):  
Amira M. El-Kosasy ◽  
Lobna A. Hussein ◽  
Nahla N. Salama ◽  
Nehal G. Sedki
Keyword(s):  
Kinetic Study ◽  
Degradation Products ◽  
Pharmaceutical Preparation ◽  
Stability Study ◽  
Purity Determination ◽  
Stability Indicating ◽  
Chromatographic Methods ◽  
Peak Purity

Two validated stability indicating chromatographic methods have been developed and used for the kinetic study and determination of bupropion HCl in presence of its degradation products and nicotine.

Validated Stability-Indicating Chromatographic Methods for the Determination of Veralipride in Presence of Its Degradation Products

2009 ◽  
Vol 70 (7-8) ◽  
pp. 1299-1302 ◽  
Author(s):  
Maissa Yacoub Salem ◽  
Nahla Nour El Din Salama ◽  
Lobna Mohammed Abd El Halim ◽  
Laila El-Sayed Abdel Fattah
Keyword(s):  
Degradation Products ◽  
Stability Indicating ◽  
Chromatographic Methods

Stability Indicating Liquid Chromatographic Method for the Determination of Fenofibrate and its Application to Kinetic Studies

2013 ◽  
Vol 5 (4) ◽  
pp. 1866-1874
Author(s):  
K. Srinivasa Rao ◽  
Keshar N K ◽  
N Jena ◽  
M.E.B Rao ◽  
A K Patnaik
Keyword(s):  
Degradation Products ◽  
Kinetic Studies ◽  
Pharmaceutical Formulations ◽  
Assay Method ◽  
Pharmaceutical Dosage Form ◽  
Stability Indicating ◽  
Zero Order Kinetics ◽  
Relative Standard ◽  
Liquid Chromatographic

A stability-indicating LC assay method was developed for the quantitative determination of fenofibrate (FFB) in pharmaceutical dosage form in the presence of its degradation products and kinetic determinations were evaluated in acidic, alkaline and peroxide degradation conditions. Chromatographic separation was achieved by use of Zorbax C18 column (250 × 4.0 mm, 5 μm). The mobile phase was established by mixing phosphate buffer (pH adjusted 3 with phosphoric acid) and acetonitrile (30:70 v/v). FFB degraded in acidic, alkaline and hydrogen peroxide conditions, while it was more stable in thermal and photolytic conditions. The described method was linear over a range of 1.0-500 μg/ml for determination of FFB (r= 0.9999). The precision was demonstrated by relative standard deviation (RSD) of intra-day (RSD= 0.56– 0.91) and inter-day studies (RSD= 1.47). The mean recovery was found to be 100.01%. The acid and alkaline degradations of FFB in 1M HCl and 1M NaOH solutions showed an apparent zero-order kinetics with rate constants 0.0736 and 0.0698  min−1 respectively and the peroxide degradation with 5% H2O2 demonstrated an apparent first-order kinetics with rate constant k = 0.0202 per min. The t1/2, t90   values are also determined for all the kinetic studies. The developed method was found to be simple, specific, robust, linear, precise, and accurate for the determination of FFB in pharmaceutical formulations.  

ICH/FDA Guidelines-Compliant Validated Stability-Indicating HPLC-UV Method for the Determination of Axitinib in Bulk and Dosage Forms

2020 ◽  
Vol 16 (8) ◽  
pp. 1106-1112
Author(s):  
Ibrahim A. Darwish ◽  
Nasr Y. Khalil ◽  
Mohammad AlZeer
Keyword(s):  
High Performance ◽  
Kinase Inhibitor ◽  
Degradation Products ◽  
Internal Standard ◽  
Dosage Forms ◽  
Uv Detector ◽  
Stability Indicating ◽  
Therapeutic Benefits ◽  
Relative Standard

Background: Axitinib (AXT) is a member of the new generation of the kinase inhibitor indicated for the treatment of advanced renal cell carcinoma. Its therapeutic benefits depend on assuring the good-quality of its dosage forms in terms of content and stability of the pharmaceutically active ingredient. Objective: This study was devoted to the development of a simple, sensitive and accurate stabilityindicating high-performance liquid chromatographic method with ultraviolet detection (HPLC-UV) for the determination of AXT in its bulk and dosage forms. Methods: Waters HPLC system was used. The chromatographic separation of AXT, internal standard (olaparib), and degradation products were performed on the Nucleosil CN column (250 × 4.6 mm, 5 μm). The mobile phase consisted of water:acetonitrile:methanol (40:40:20, v/v/v) with a flow rate of 1 ml/min, and the UV detector was set at 225 nm. AXT was subjected to different accelerated stress conditions and the degradation products, when any, were completely resolved from the intact AXT. Results: The method was linear (r = 0.9998) in the concentration range of 5-50 μg/ml. The limits of detection and quantitation were 0.85 and 2.57 μg/ml, respectively. The accuracy of the method, measured as recovery, was in the range of 98.0-103.6% with relative standard deviations in the range of 0.06-3.43%. The results of stability testing revealed that AXT was mostly stable in neutral and oxidative conditions; however, it was unstable in alkaline and acidic conditions. The kinetics of degradation were studied, and the kinetic rate constants were determined. The proposed method was successfully applied for the determination of AXT in bulk drug and dosage forms. Conclusions: A stability-indicating HPLC-UV method was developed and validated for assessing AXT stability in its bulk and dosage forms. The method met the regulatory requirements of the International Conference on Harmonization (ICH) and the Food and Drug Administration (FDA). The results demonstrated that the method would have great value when applied in quality control and stability studies for AXT.

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