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Wahba MEK, El Sherbiny D. Applicability of hybrid micelle liquid chromatography for practical determination of acid dissociation constant. Journal of Taibah University for Science 2022. [DOI: 10.1080/16583655.2022.2031569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M. E. K. Wahba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - D. El Sherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Ayman A, Zeid AM, Wahba MEK, El-Shabrawy Y. Simultaneous determination of ergotamine, caffeine and dipyrone in their ternary mixture by applying double divisor and first derivative ratio spectra methods. Ann Pharm Fr 2022; 80:718-729. [PMID: 35093387 DOI: 10.1016/j.pharma.2022.01.003] [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: 09/22/2021] [Revised: 11/10/2021] [Accepted: 01/12/2022] [Indexed: 11/18/2022]
Abstract
Two validated methods namely, double divisor ratio spectra derivative spectroscopy and derivative ratio spectroscopy with zero crossing point were applied to assay a ternary mixture of ergotamine tartrate (EGT), caffeine (CAF) and dipyrone sodium (DIP) without any additional separation steps. The linearity ranges using both methods were (1.0 µg/mL-70.0 µg/mL), (60.0 µg/mL - 100.0 µg/mL) and (100.0 µg/mL - 300.0 µg/mL) for EGT, CAF and DIP respectively. Double divisor ratio spectroscopy (method A) depends on dividing the different peak responses of EGT on (summation of peaks responses of CAF and DIP each of 10.0 µg/mL concentration) at λ max=342 nm, 310 nm and 315 nm for EGT, CAF and DIP respectively. Derivative ratio spectroscopy with zero crossing point (method B) depends on dividing the peak responses of two drugs (EGT and CAF) on (10.0 µg/mL of DIP) and dividing the peak response of DIP on peak response of (10.0 µg/mL of EGT). The detection limits of the studied drugs applying method A were (3.54, 12.96 and 8.748 µg/mL), with quantitation limits of (10.73, 39.28 and 26.51 µg/mL) for EGT, CAF and DIP respectively. Regarding method B, the limits of detection and quantitation for EGT were 0.604 µg/mL and 1.829 µg/mL respectively: with corresponding values of 19.44 µg/mL and 58.92 µg/mL for CAF and 20.44 µg/mL and 61.9 µg/mL for DIP. The obtained results were compared to those obtained by published methods and were found to be in accordance.
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Affiliation(s)
- A Ayman
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt; Pharmaceutical chemistry department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt
| | - A M Zeid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - M E K Wahba
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt; Pharmaceutical chemistry department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt.
| | - Y El-Shabrawy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
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Wahba MEK, El Wasseef D, El Sherbiny D. Studying the suitability of hybrid micelle liquid chromatography for estimating the lipophilicity of some partial dopamine agonists used to attain the reward circuit. R Soc Open Sci 2021; 8:202371. [PMID: 34084546 PMCID: PMC8150020 DOI: 10.1098/rsos.202371] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Three micellar-based mobile phases were developed and optimized for the simultaneous determination of certain partial dopamine agonists that are used to overcome the withdrawal symptoms of abused drugs, namely aripiprazole, pramipexole and piribedil. The studied drugs were separated using micellar liquid chromatography, hybrid micellar liquid chromatography (HMLC) and microemulsion liquid chromatography (MELC). The three developed mobile phases were studied to estimate their suitability for the measurement of log p-values of the studied drugs. Experimental determination of log Pm/w values using the three mobile phases demonstrates that HMLC is the mobile phase of choice since the obtained practical log Pm/w values were in accordance with the reported log P values, and calculated log P and log D values. An explanation of the obtained results was presented based on the separation retention mechanism for each chromatographic technique. Furthermore, the effect of the pH and the column temperature in HMLC on the practical log Pm/w values was studied. To verify its suitability for experimental measurement of log Pm/w , HMLC was subjected to full validation according to the United States Pharmacopeia.
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Affiliation(s)
- M. E. K. Wahba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt
- Department of Pharmaceutical Analytical Chemistry, Mansoura University, Mansoura 35516, Egypt
| | - D. El Wasseef
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - D. El Sherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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Wahba MEK, El Sherbiny D, El Wasseef D. Estimating chiral selector potential of micelle-based mobile phases through the analysis of some enantiomeric mixtures. Journal of Taibah University for Science 2021. [DOI: 10.1080/16583655.2021.1927399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- M. E. K. Wahba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - D. El Sherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - D. El Wasseef
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, Egypt
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Ayman A, EL-Shabrawy Y, Zeid AM, Wahba MEK. A diagnostic intoxication tool for clozapine and phenytoin using hybrid micelle liquid chromatography. Journal of Taibah University for Science 2021. [DOI: 10.1080/16583655.2021.1886418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Aya Ayman
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Pharmaceutical chemistry department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt
| | - Yasser EL-Shabrawy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Abdallah M. Zeid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - M. E. K. Wahba
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Pharmaceutical chemistry department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt
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Ayman A, Zeid AM, Wahba MEK, El-Shabrawy Y. Analysis of clozapine in its tablets using two novel spectrophotometric reactions targeting its tertiary amino group. Spectrochim Acta A Mol Biomol Spectrosc 2020; 238:118447. [PMID: 32413720 DOI: 10.1016/j.saa.2020.118447] [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] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Two simple spectrophotometric methodologies have been proposed and validated for the measurement of an atypical antipsychotic drug Clozapine (CLZ). Method A depends on interaction of CLZ with N-bromosuccinimide(NBS) resulting in formation of a yellowish orange colored product, measured at 320 nm. The linearity range was 5.0-70.0 μg/mL. Method B depends on condensation of the same drug with acetic acid mixed anhydride reagent producing a purple colored product, measured at 319 nm. The linearity range was 8.0-24.0 μg/mL. All parameters affecting the reaction condition (volume of both reagent, temperature, time and the different diluting solvents) were optimized. Both methods were successfully applied to assay CLZ in its pure form and tablets giving mean percentage recoveries of (98.87 ± 1.8 and 100 ± 1.7) for method A, and corresponding values of (98.6 ± 0.96 and 99.5 ± 1) for method B. Besides, the study of reactions stoichiometry was performed and the reaction mechanisms were proposed.
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Affiliation(s)
- Aya Ayman
- Pharmaceutical Chemistry Department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt; Pharmaceutical Chemistry Department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt
| | - Abdallah M Zeid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - M E K Wahba
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt; Pharmaceutical Chemistry Department, Faculty of pharmacy, Delta University for science and Technology, Gamasa, Egypt.
| | - Yasser El-Shabrawy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
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Ibrahim F, Wahba MEK, Magdy G. Analytical method development and validation of spectrofluorimetric and spectrophotometric determination of some antimicrobial drugs in their pharmaceuticals. Spectrochim Acta A Mol Biomol Spectrosc 2018; 188:525-536. [PMID: 28759854 DOI: 10.1016/j.saa.2017.07.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 07/13/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
In this study, three novel, sensitive, simple and validated spectrophotometric and spectrofluorimetric methods have been proposed for estimation of some important antimicrobial drugs. The first two methods have been proposed for estimation of two important third-generation cephalosporin antibiotics namely, cefixime and cefdinir. Both methods were based on condensation of the primary amino group of the studied drugs with acetyl acetone and formaldehyde in acidic medium. The resulting products were measured by spectrophotometric (Method I) and spectrofluorimetric (Method II) tools. Regarding method I, the absorbance was measured at 315nm and 403nm with linearity ranges of 5.0-140.0 and 10.0-100.0μg/mL for cefixime and cefdinir, respectively. Meanwhile in method II, the produced fluorophore was measured at λem 488nm or 491nm after excitation at λex 410nm with linearity ranges of 0.20-10.0 and 0.20-36.0μg/mL for cefixime and cefdinir, respectively. On the other hand, method III was devoted to estimate nifuroxazide spectrofluorimetrically depending on formation of highly fluorescent product upon reduction of the studied drug with Zinc powder in acidic medium. Measurement of the fluorescent product was carried out at λem 335nm following excitation at λex 255nm with linearity range of 0.05 to 1.6μg/mL. The developed methods were subjected to detailed validation procedure, moreover they were used for the estimation of the concerned drugs in their pharmaceuticals. It was found that there is a good agreement between the obtained results and those obtained by the reported methods.
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Affiliation(s)
- F Ibrahim
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt
| | - M E K Wahba
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, 35516 Mansoura, Egypt.
| | - G Magdy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 35712, Egypt
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Ibrahim F, Wahba MEK. Simultaneous Liquid Chromatographic Determination of Ebastine with Two Sympathomimetic Drugs Using a Monolithic Column. J Chromatogr Sci 2017; 55:258-266. [PMID: 27884871 DOI: 10.1093/chromsci/bmw180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 11/13/2022]
Abstract
Ebastine (EBS) has been assayed in its laboratory-prepared co-formulated tablets with either pseudoephedrine hydrochloride (PSU) or phenylephrine hydrochloride (PHR) using isocratic reversed-phase chromatography. Separation was conducted using a 50 mm × 4.6 mm i.d., Chromolith® SpeedROD RP-18 end-capped column at ambient temperature. A mobile phase composed of water:acetonitrile in a ratio of 25:75 having a pH of 3.2, has been utilized at 1 mL/min with UV detection at 254 nm for both EBS and PSU and 274 nm for PHR which in turn increased the sensitivity of the proposed method significantly. Symmetric well-separated peaks resulted in a short chromatographic run; <5 min. The proposed method was subjected to detailed validation procedures and proved to be highly sensitive as shown from limit of quantification values which were 4.7, 39.4 and 10.2 μg/mL for EBS, PSU and PHR, respectively. The proposed method was used to analyze EBS in its laboratory-prepared co-formulated tablets; the obtained results were comparable to those resulting from the reference method.
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Affiliation(s)
- F Ibrahim
- Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - M E K Wahba
- Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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Wahba MEK. Simultaneous Determination of Ascorbic Acid, Pseudoephedrine Hydrochloride and Ibuprofen in their Combined Tablets Using Micellar Liquid Chromatography. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2014.883531] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- M. E. K. Wahba
- a Department of Analytical Chemistry, Faculty of Pharmacy , Mansoura University , Mansoura , Egypt
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Ibrahim F, Wahba MEK. Liquid Chromatographic Determination of Ergotamine Tartrate in its Combined Tablets using Fluorimetric and UV Detection: Application to Content Uniformity Testing. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.914953] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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El Sherbiny D, Wahba MEK. Validation of a Micellar Liquid Chromatographic Method for Determination of Caffeine and Non-Steroidal Anti-Inflammatories. J Chromatogr Sci 2014; 52:806-13. [DOI: 10.1093/chromsci/bmt117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sharaf El Din MK, Wahba MEK. Novel validated spectrofluorimetric methods for the determination of taurine in energy drinks and human urine. LUMINESCENCE 2014; 30:137-43. [DOI: 10.1002/bio.2703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 11/11/2022]
Affiliation(s)
- M. K. Sharaf El Din
- Department of Analytical Chemistry, Faculty of Pharmacy; Mansoura University; Mansoura 35516 Egypt
| | - M. E. K. Wahba
- Department of Analytical Chemistry, Faculty of Pharmacy; Mansoura University; Mansoura 35516 Egypt
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Ibrahim F, Wahba MEK. Liquid Chromatography Coupled with Fluorimetric Detection and Third Derivative Synchronous Fluorescence Spectroscopy as two Analytical Methods for the Simultaneous Determination of Rabeprazole Sodium and Domperidone After Derivatization with 4-Chloro-7-Nitrobenzofurazan. J Fluoresc 2014; 24:1137-47. [DOI: 10.1007/s10895-014-1394-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
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Sharaf El-Din MK, Ibrahim F, Eid MI, Wahba MEK. Chemometrically optimized micellar liquid chromatographic method for the simultaneous determination of cetirizine dihydrochloride in its combined dosage forms. Application to biological fluids and pharmacokinetic studies. ACTA CHROMATOGR 2013. [DOI: 10.1556/achrom.25.2013.1.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Walash MI, El-Brashy A, El-Enany N, Wahba MEK. Validated Stability indicating Spectrophotometric Method for the Determination of Acetazolamide in Dosage Forms through Complex Formation with Palladium (II). Int J Biomed Sci 2010; 6:141-9. [PMID: 23675188 PMCID: PMC3614737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Accepted: 05/21/2009] [Indexed: 11/10/2022]
Abstract
A simple and sensitive spectrophotometric method was developed for the determination of acetazolamide (ACM) in pure form and pharmaceutical preparations. The proposed method is based on the complex formation of acetazolamide with Palladium (II) chloride in acetate buffer pH5.4 and measuring the absorbance at 308 nm. The absorbance- concentration plot was rectilinear over the concentration range of 5-70 μg/ml with a minimum detection limit (LOD) of 0.98 μg/ml, limit of quantification (LOQ) of 2.96 μg/ml, and a molar absorptivity ζ=2.7 × 10(3) L/mol.cm. The factors affecting the absorbance of the formed complex were carefully studied and optimized. The composition of the complex as well as its stability constant was also investigated. The proposed method was applied for the determination of acetazolamide in its tablets and the results obtained were favorably compared with those obtained using the official method. A proposal of the reaction pathway was postulated.
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Walash MI, El-Brashy A, El-Enany N, Wahba MEK. Spectrofluorimetric Determination of Famotidine in Pharmaceutical Preparations and Biological Fluids through Ternary Complex Formation with Some Lanthanide Ions: Application to Stability Studies. Int J Biomed Sci 2009; 5:158-68. [PMID: 23675130 PMCID: PMC3614761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Accepted: 02/02/2009] [Indexed: 12/03/2022]
Abstract
A simple, sensitive and specific method was developed for the determination of famotidine (FMT) in pharmaceutical preparations and biological fluids. The proposed method is based on ternary complex formation of famotidine (FMT) with EDTA and terbium chloride TbCl3 in acetate buffer of pH 4. Alternatively, the complex is formed via the reaction with hexamine and either lanthanum chloride LaCl3, or cerous chloride CeCl3 in borate buffer of pH6.2 and 7.2 respectively. In all cases, the relative fluorescence intensity of the formed complexes was measured at 580 nm after excitation at 290 nm. The fluorescence intensity - concentration plots were rectilinear over the concentration range of 10-100, 5-70, and 5-60 ng/ml, with minimum quantification limits (LOQ) of 2.4, 2.2, and 5.2 ng/ml, and minimum limits of detection (LOD) of 0.79, 0.74, and 1.7 ng/ml upon using TbCl3, LaCl3, and CeCl3 respectively. The proposed method was applied successfully for the analysis of famotidine in dosage forms and in human plasma. The kinetics of both alkaline and oxidative induced degradation of the drug was studied using the proposed method. The apparent first order rate constant and half life time were calculated. A proposal of the reaction pathways is presented.
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