Výsledky vyhledávání - "Dina S. El-Kafrawy"

Forced Degradation and Stability-Indicating Study for the Binary Mixture of Allopurinol and Thioctic Acid Using Validated HPLC-DAD Method

Autor: Dina S El-Kafrawy, Ahmed G Abdelhamid, Magdi M Abdel-Khalek, Tarek S Belal

Publikováno v: Journal of AOAC INTERNATIONAL.

BackgroundCareful review of the scientific databases revealed that no stability-indicating analytical method is available for the binary mixture of allopurinol (ALO) and thioctic acid (THA).ObjectiveA comprehensive stability-indicating HPLC-DAD proce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b64a2193a9db64de4f4bfbed3c24e172
https://doi.org/10.1093/jaoacint/qsad028

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Validated spectrophotometric determination of maduramicin ammonium using three charge transfer complexation reactions

Autor: Magdi M. Abdel-Khalek, Dina S. El-Kafrawy, Tarek S. Belal, Mostafa M. Baker

Publikováno v: Annales Pharmaceutiques Françaises. 78:388-397

Summary Direct spectrophotometric determination of Maduramicin ammonium (MAD) represents an analytical challenge since it is a weak UV-absorbing and lacking a strong chromophore. This work represents the first spectrophotometric determination of MAD

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::379f74b3d26f7240015ce6fbd2cd4eaf
https://doi.org/10.1016/j.pharma.2020.04.002

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Analytical investigation of ternary mixture of phenylephrine hydrochloride, dimetindene maleate and benzalkonium chloride using validated stability indicating HPLC-DAD method

Autor: Magdi M. Abdel-Khalek, Tarek S. Belal, Ahmed G. Abdelhamid, Dina S. El-Kafrawy

Publikováno v: Drug Development and Industrial Pharmacy. 46:1278-1288

A stability-indicating high performance liquid chromatography method with diode array detection (HPLC-DAD) was developed and validated for simultaneous determination of phenylephrine hydrochloride (PHR), dimetindene maleate (DMD) and benzalkonium chl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8109dc9c049375dbbc31eea4d5c104c0
https://doi.org/10.1080/03639045.2020.1788064

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Eco-friendly stability-indicating HPTLC micro-determination of the first FDA approved SARS-CoV-2 antiviral prodrug Remdesivir: Study of degradation kinetics and structural elucidation of the degradants using HPTLC-MS

Autor: Amira H. Abo-Gharam, Dina S. El-Kafrawy

Publikováno v: Sustainable chemistry and pharmacy. 29

The worldwide spread coronavirus (covid-19) pandemic caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) represents a global health crisis. The world was forced to face a great challenge to control and overcome this health disa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f295c16f1f1f4c578d516037f4f4c0f6
https://pubmed.ncbi.nlm.nih.gov/35720509

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A Highly Selective Stability-Indicating HPLC Method for Simultaneous Estimation of Sertaconazole with Two Coformulated Preservatives in Pharmaceutical Dosage Forms

Autor: Mostafa M. Baker, Dina S. El-Kafrawy, Tarek S. Belal, Magdi M. Abdel-Khalek

Publikováno v: Chromatographia. 83:191-203

The present investigation deals with the development of a validated stability-indicating HPLC–DAD method for the simultaneous determination of sertaconazole nitrate (SN) and two coformulated preservatives: sorbic acid (SA) and methylparaben (MP). T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b9a7540b5d42ad0ad88b298ecd04001
https://doi.org/10.1007/s10337-019-03832-8

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Development and greenness assessment of a stability-indicating HPLC-DAD method for simultaneous determination of allopurinol and benzbromarone

Autor: Tarek S. Belal, Magdi M. Abdel-Khalek, Ahmed G. Abdelhamid, Dina S. El-Kafrawy

The growing interest in Green Analytical Chemistry (GAC) principles through the replacement of polluting analytical procedures with greener ones, has encouraged us to develop an eco-friendly stability-indicating HPLC with diode array detection method

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e04b89d4f3781c843ccadd4a5e1114d6

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Green chromatographic methods for simultaneous micro-determination of empagliflozin, linagliptin with metformin and its pharmacopoeial impurities in pure form and triple combination tablets: A comparative study

Autor: Dina S. El-Kafrawy, Y. A. Beltagy, Ola Hossam-Eldin El-Shoubashy, Ahmed ElSayed Issa

Publikováno v: Sustainable Chemistry and Pharmacy. 25:100560

Green analytical chemistry (GAC) is gaining great interest with the respect of global environmental pollution control (EPC). Consequently, we have developed two green chromatographic methods for the simultaneous precise and selective estimation of em

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9667b888de5209f7b212373653ecba0
https://doi.org/10.1016/j.scp.2021.100560

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Validated spectrophotometric and chromatographic methods for analysis of the recently approved hepatitis C antiviral combination ledipasvir and sofosbuvir

Autor: Mostafa M. Baker, Dina S. El-Kafrawy, Tarek S. Belal, M.S. Mahrous

Publikováno v: Annales Pharmaceutiques Françaises. 76:16-31

This work describes five simple and reliable spectrophotometric and chromatographic methods for analysis of hepatitis C antiviral binary mixture of ledipasvir (LPV) and sofosbuvir (SBV). Method I is based on the use of Amax and derivative spectrophot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38f4eae7b203f1c1fb86c847288770e3
https://doi.org/10.1016/j.pharma.2017.07.005

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