1
|
Lettieri S, Manesiotis P, Slann M, Lewis DW, Hall AJ. A novel Hamilton receptor monomer for the stoichiometric molecular imprinting of barbiturates. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.105031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
2
|
EL-Houssini OM, Zawilla NH, Mohammad MAA. Validated RP-LC Methods for Investigating the Degradation Behavior of Acefylline: Application for Analysis in Two Binary Mixtures. CURR PHARM ANAL 2021. [DOI: 10.2174/1573412916999200423102505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Acefylline (Acef) is a derivative of theophylline that has bronchodilator effects. Two binary
mixtures were marketed for Acef: Acefylline piperazine/ Phenobarbitone (Acef-P/Phen) and Acefylline
heptaminol/ Cinnarizine (Acef-H/ Cinn). To our knowledge none of the reported methods had the capacity to
determine Acef in its binary mixture in presence of its degradation products and potential impurity theophylline
(Theo).
Methods:
Two validated RP-LC methods were established for the determination of Acef-P/Phen and Acef-H/
Cinn in presence of Acef degradation products and its potential impurity Theo. A complete study of the forced
acidic, alkaline and oxidative degradation of Acef was presented. The methods were based on LC separation on
RP C18 columns using isocratic and gradient elution for Acef-P /Phen and Acef-H /Cinn mixtures, respectively.
Different chromatographic conditions were examined and optimized.
Results:
Linear responses were attained over concentration ranges of 75-500/15-1000 μg/mL and 100-1000 /50-
500 μg/mL with mean percentage recoveries of (100.72±1.23)%/ (99.29±1.12)% and (100.44±1.27)%/
(99.01±0.97)% for Acef-P/Phen and Acef-H /Cinn, respectively. ICH guidelines were used for methods
validation and all parameters were found to be acceptable.
Conclusion:
The methods showed to be accurate, precise and specific for the analysis of Acef-P/Phen and AcefH /Cinn in drug substance, drug product and in laboratory prepared mixtures in presence of Theo and up to 50%
of degradation products. The structures of the main degradation products and the expected degradation pathway
were suggested using the MS data.
Collapse
Affiliation(s)
- Ola Mohamed EL-Houssini
- National Organization for Drug Control and Research (NODCAR), 51 wezaret El- Zeraa Street, Agouza. P.O. Box 12553 Giza 35521, Egypt
| | - Nagwan Hamdi Zawilla
- National Organization for Drug Control and Research (NODCAR), 51 wezaret El- Zeraa Street, Agouza. P.O. Box 12553 Giza 35521, Egypt
| | - Mohammad Abdul-Azim Mohammad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini Street, Cairo 11562, Egypt
| |
Collapse
|
3
|
BOTELLO I, BORRULL F, AGUILAR C, CALULL M. In-line Solid-phase Extraction–Capillary Zone Electrophoresis for the Determination of Barbiturate Drugs in Human Urine. ANAL SCI 2014; 30:971-7. [DOI: 10.2116/analsci.30.971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Igor BOTELLO
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, Universitat Rovira i Virgili
| | - Francesc BORRULL
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, Universitat Rovira i Virgili
| | - Carme AGUILAR
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, Universitat Rovira i Virgili
| | - Marta CALULL
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, Universitat Rovira i Virgili
| |
Collapse
|
4
|
Botello I, Borrull F, Calull M, Aguilar C. Electrokinetic supercharging in CE for the separation and preconcentration of barbiturate drugs in urine samples. J Sep Sci 2013; 36:524-31. [DOI: 10.1002/jssc.201200690] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 10/15/2012] [Accepted: 10/16/2012] [Indexed: 01/08/2023]
Affiliation(s)
- Igor Botello
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry; Universitat Rovira i Virgili; Tarragona Spain
| | - Francesc Borrull
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry; Universitat Rovira i Virgili; Tarragona Spain
| | - Marta Calull
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry; Universitat Rovira i Virgili; Tarragona Spain
| | - Carme Aguilar
- Departament de Química Analítica i Química Orgànica, Faculty of Chemistry; Universitat Rovira i Virgili; Tarragona Spain
| |
Collapse
|