1
|
Al-Sulaimi S, Kushwah R, Abdullah Alsibani M, El Jery A, Aldrdery M, Ashraf GA. Emerging Developments in Separation Techniques and Analysis of Chiral Pharmaceuticals. Molecules 2023; 28:6175. [PMID: 37687004 PMCID: PMC10489017 DOI: 10.3390/molecules28176175] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/05/2023] [Accepted: 08/14/2023] [Indexed: 09/10/2023] Open
Abstract
Chiral separation, the process of isolating enantiomers from a racemic mixture, holds paramount importance in diverse scientific disciplines. Using chiral separation methods like chromatography and electrophoresis, enantiomers can be isolated and characterized. This study emphasizes the significance of chiral separation in drug development, quality control, environmental analysis, and chemical synthesis, facilitating improved therapeutic outcomes, regulatory compliance, and enhanced industrial processes. Capillary electrophoresis (CE) has emerged as a powerful technique for the analysis of chiral drugs. This review also highlights the significance of CE in chiral drug analysis, emphasizing its high separation efficiency, rapid analysis times, and compatibility with other detection techniques. High-performance liquid chromatography (HPLC) has become a vital technique for chiral drugs analysis. Through the utilization of a chiral stationary phase, HPLC separates enantiomers based on their differential interactions, allowing for the quantification of individual enantiomeric concentrations. This study also emphasizes the significance of HPLC in chiral drug analysis, highlighting its excellent resolution, sensitivity, and applicability. The resolution and enantiomeric analysis of nonsteroidal anti-inflammatory drugs (NSAIDs) hold great importance due to their chiral nature and potential variations in pharmacological effects. Several studies have emphasized the significance of resolving and analyzing the enantiomers of NSAIDs. Enantiomeric analysis provides critical insights into the pharmacokinetics, pharmacodynamics, and potential interactions of NSAIDs, aiding in drug design, optimization, and personalized medicine for improved therapeutic outcomes and patient safety. Microfluidics systems have revolutionized chiral separation, offering miniaturization, precise fluid control, and high throughput. Integration of microscale channels and techniques provides a promising platform for on-chip chiral analysis in pharmaceuticals and analytical chemistry. Their applications in techniques such as high-performance liquid chromatography (HPLC) and capillary electrochromatography (CEC) offer improved resolution and faster analysis times, making them valuable tools for enantiomeric analysis in pharmaceutical, environmental, and biomedical research.
Collapse
Affiliation(s)
- Sulaiman Al-Sulaimi
- Department of Biological Science and Chemistry, University of Nizwa, Nizwa 611, Oman; (S.A.-S.); (R.K.); (M.A.A.)
| | - Reveka Kushwah
- Department of Biological Science and Chemistry, University of Nizwa, Nizwa 611, Oman; (S.A.-S.); (R.K.); (M.A.A.)
| | - Mohammed Abdullah Alsibani
- Department of Biological Science and Chemistry, University of Nizwa, Nizwa 611, Oman; (S.A.-S.); (R.K.); (M.A.A.)
| | - Atef El Jery
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 61411, Saudi Arabia
| | - Moutaz Aldrdery
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 61411, Saudi Arabia
| | | |
Collapse
|
2
|
Recent Advances on Chiral Mobile Phase Additives: A Critical Review. JOURNAL OF ANALYSIS AND TESTING 2022. [DOI: 10.1007/s41664-022-00222-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
3
|
OHTAWA T, TSUNODA M. Enantiomeric Separation of 2-Hydroxyglutarate Using Chiral Mobile Phase Additives. CHROMATOGRAPHY 2022. [DOI: 10.15583/jpchrom.2021.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Takuma OHTAWA
- Graduate School of Pharmaceutical Sciences, University of Tokyo
| | - Makoto TSUNODA
- Graduate School of Pharmaceutical Sciences, University of Tokyo
| |
Collapse
|
4
|
Shan L, Jones B. Nano liquid chromatography, an updated review. Biomed Chromatogr 2022; 36:e5317. [PMID: 34981550 DOI: 10.1002/bmc.5317] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/04/2021] [Accepted: 12/09/2021] [Indexed: 11/11/2022]
Abstract
Low flow chromatography has a rich history of innovation but has yet to reach widespread implementation in bioanalytical applications. Improvements in pump technology, microfluidic connections, and nano-electrospray sources for mass spectrometry have laid the groundwork for broader application, and innovation in this space has accelerated in recent years. This article reviews the instrumentation used for nano-flow liquid chromatography , the types of columns employed, and strategies for multi-dimensionality of separations, which is key to the future state of the technique to the high-throughput needs of modern bioanalysis. An update of the current applications where nano-LC is widely used, such as proteomics and metabolomics, is discussed. But the trend towards biopharmaceutical development of increasingly complex, targeted, and potent therapeutics for the safe treatment of disease drives the need for ultimate selectivity and sensitivity of our analytical platforms for targeted quantitation in a regulated space. The selectivity needs are best addressed by mass spectrometric detection, especially at high resolutions, and exquisite sensitivity is provided by nano-electrospray ionization as the technology continues to evolve into an accessible, robust, and easy to use platform.
Collapse
|
5
|
Zátopková R, Aturki Z, Bednář P. Stereoisomer separation of flavanones and flavanone-7-O-glycosides by means of nanoliquid chromatography employing derivatized β-cyclodextrins as mobile-phase additive. J Sep Sci 2020; 43:3382-3390. [PMID: 32543784 DOI: 10.1002/jssc.202000268] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 11/06/2022]
Abstract
A nanoliquid chromatographic method for the stereoisomer separation of some flavanone aglycones and 7-O-glycosides has been proposed employing a C18 capillary column and a chiral mobile-phase additive such as cyclodextrin. The chiral separation of eriodictyol, naringenin, and hesperitin was obtained by addition of carboxymethyl-β-cyclodextrin to the mobile phase, whereas eriocitrin, naringin, narirutin, and hesperidin diastereoisomers were resolved by using sulfobutyl ether-β-cyclodextrin. The influence of the composition of the mobile phase, the length of the capillary column, and the flow rate on the chiral recognition were investigated. At optimum conditions, baseline separation for the selected aglycones and glycosylated forms were achieved with a mobile phase consisting of 50 mM sodium acetate buffer pH 3 and 30% methanol containing 20 mM of carboxymethyl-β-cyclodextrin and 10 mM of sulfobutyl ether-β-cyclodextrin, respectively. Precision, linearity, and sensitivity of the method were tested. Limits of detection and quantification for the studied flavanone glycosides were in the range 1.3-2.5 and 7.5-12.5 µg/mL, respectively. The method was used for the determination of the diastereomeric composition of the flavanone-7-O-glycosides in Citrus juices after solid-phase extraction procedure.
Collapse
Affiliation(s)
- Renata Zátopková
- Istituto per i Sistemi Biologici, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma I, Monterotondo, Rome, 00015, Italy.,Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, Olomouc, 771 46, Czech Republic
| | - Zeineb Aturki
- Istituto per i Sistemi Biologici, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma I, Monterotondo, Rome, 00015, Italy
| | - Petr Bednář
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, Olomouc, 771 46, Czech Republic
| |
Collapse
|
6
|
Abstract
Background::
Nano level chiral separation is necessary and demanding in the development
of the drug, genomic, proteomic, and other chemical and the environmental sciences. Few drugs exist
in human body cells for some days at nano level concentrations, that are out of the jurisdiction of the
detection by standard separation techniques. Likewise, the separation and identification of xenobiotics
and other environmental contaminants (at nano or low levels) are necessary for our healthiness.
Discussion:
Conclusion:
This article will be beneficial for chiral chromatographers, academicians, pharmaceutical
industries, environmental researchers and Government regulation authorities.
Collapse
Affiliation(s)
- Al Arsh Basheer
- State University of New York, Flint Entrance, Amherst, NY 14260, Buffalo, United States
| | - Iqbal Hussain
- Department of General Studies, Jubail Industrial College, Jubail Industrial City, Jubail, Saudi Arabia
| | - Marcus T. Scotti
- Cheminformatics Laboratory - Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraiba-Campus I, 58051-970, Joao Pessoa, PB, Brazil
| | - Luciana Scotti
- Teaching and Research Management - University Hospital, Cheminformatics Laboratory - Postgraduate Program in Natural Products and Synthetic Bioactive, Federal University of Paraiba-Campus I, 58051-970, Joao Pessoa, PB, Brazil
| | - Imran Ali
- Department of Chemistry, College of Sciences, Taibah University, Al-Medina Al-Munawara - 41477, Saudi Arabia
| |
Collapse
|
7
|
Fanali S. Nano-liquid chromatography applied to enantiomers separation. J Chromatogr A 2017; 1486:20-34. [DOI: 10.1016/j.chroma.2016.10.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/01/2016] [Accepted: 10/11/2016] [Indexed: 10/20/2022]
|
8
|
Ahmadi M, Madrakian T, Afkhami A. Enantioselective solid phase extraction prior to spectrofluorometric determination: a procedure for the determination of naproxen enantiomers in the presence of each other. RSC Adv 2015. [DOI: 10.1039/c4ra10405f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Enantioselective solid phase extraction of naproxen drug enantiomers.
Collapse
Affiliation(s)
| | | | - Abbas Afkhami
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan
- Iran
| |
Collapse
|
9
|
Wang C, Ge J, Zhang J, Guo T, Chi L, He Z, Xu X, York P, Sun L, Li H. Multianalyte determination of the kinetic rate constants of drug-cyclodextrin supermolecules by high performance affinity chromatography. J Chromatogr A 2014; 1359:287-95. [PMID: 25069744 DOI: 10.1016/j.chroma.2014.07.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 11/29/2022]
Abstract
The kinetics of the dissociation is fundamental to the formation and the in vivo performance of cyclodextrin supramolecules. The individual determination of the apparent dissociation rate constant (kd,app) using high performance affinity chromatography (HPAC) is a tedious process requiring numerous separate studies and massive data fitting. In this study, the multianalyte approach was employed to simultaneously measure the kd,app values of three drugs through one injection based on the investigation of the dependence of drug-cyclodextrin interaction kinetics on the mobile phase composition. As a result, the kd,app values increased when decreasing the ion strength, increasing the ionization of drugs and adding extra organic solvents. The values of kd,app for acetaminophen, phenacetin and S-flurbiprofen estimated by the multianalyte approach were 8.54±1.81, 5.36±0.94 and 0.17±0.02s(-1), respectively, which were in good agreement with those determined separately (8.31±0.58, 5.01±0.42 and 0.15±0.01s(-1)). For both of the single and multiple flow rate peak profiling methods, the results of the multianalyte approach were statistically equivalent with that of the single compound analysis for all of the three drugs (p>0.05). The multianalyte approach can be employed for the efficient evaluation of the drug-cyclodextrin kinetics with less variance caused by cyclodextrin column bleeding.
Collapse
Affiliation(s)
- Caifen Wang
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jingwen Ge
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jiwen Zhang
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Tao Guo
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Liandi Chi
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zhonggui He
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xu Xu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Peter York
- University of Bradford, Bradford, West Yorkshire BD7 1DP, United Kingdom.
| | - Lixin Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Haiyan Li
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| |
Collapse
|
10
|
A novel methodology for analysis of enantiomers through determination of their critical micelle concentrations using spectrophotometric method. J Pharm Biomed Anal 2013; 83:96-100. [DOI: 10.1016/j.jpba.2013.04.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 04/10/2013] [Accepted: 04/17/2013] [Indexed: 11/23/2022]
|
11
|
Rocco A, Maruška A, Fanali S. Enantiomeric separations by means of nano-LC. J Sep Sci 2013; 36:421-44. [DOI: 10.1002/jssc.201200886] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 10/24/2012] [Accepted: 10/26/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Rocco
- Department of Biochemistry and Biotechnologies; Vytautas Magnus University; Kaunas Lithuania
- Institute of Chemical Methodologies; Consiglio Nazionale delle Ricerche; Rome Italy
| | - Audrius Maruška
- Department of Biochemistry and Biotechnologies; Vytautas Magnus University; Kaunas Lithuania
| | - Salvatore Fanali
- Institute of Chemical Methodologies; Consiglio Nazionale delle Ricerche; Rome Italy
| |
Collapse
|
12
|
Cyclodextrins as a chiral mobile phase additive in nano-liquid chromatography: comparison of reversed-phase silica monolithic and particulate capillary columns. Anal Bioanal Chem 2012; 402:2935-43. [DOI: 10.1007/s00216-012-5764-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 01/11/2012] [Accepted: 01/18/2012] [Indexed: 10/28/2022]
|
13
|
Tong S, Guan YX, Yan J, Zheng B, Zhao L. Enantiomeric separation of (R, S)-naproxen by recycling high speed counter-current chromatography with hydroxypropyl-β-cyclodextrin as chiral selector. J Chromatogr A 2011; 1218:5434-40. [DOI: 10.1016/j.chroma.2011.06.015] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2011] [Revised: 05/30/2011] [Accepted: 06/01/2011] [Indexed: 10/18/2022]
|
14
|
Elsinghorst PW, Kinzig M, Rodamer M, Holzgrabe U, Sörgel F. An LC–MS/MS procedure for the quantification of naproxen in human plasma: Development, validation, comparison with other methods, and application to a pharmacokinetic study. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:1686-96. [DOI: 10.1016/j.jchromb.2011.04.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 04/07/2011] [Accepted: 04/08/2011] [Indexed: 02/02/2023]
|
15
|
Equilibrium studies on reactive extraction of naproxen enantiomers using hydrophilic β-cyclodetrin derivatives extractants. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-010-9832-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Guillarme D, Bonvin G, Badoud F, Schappler J, Rudaz S, Veuthey JL. Fast chiral separation of drugs using columns packed with sub-2 microm particles and ultra-high pressure. Chirality 2010; 22:320-30. [PMID: 19544347 DOI: 10.1002/chir.20745] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The use of columns packed with sub-2 microm particles in liquid chromatography with very high pressure conditions (known as UHPLC) was investigated for the fast enantioseparation of drugs. Two different procedures were evaluated and compared using amphetamine derivatives and beta-blockers as model compounds. In one case, cyclodextrins (CD) were directly added to the mobile phase and chiral separations were carried out in less than 5 min. However, this strategy suffered from several drawbacks linked to column lifetime and low chromatographic efficiencies. In the other case, the analysis of enantiomers was carried out after a derivatization procedure using two different reagents, 2,3,4-tri-O-acetyl-alpha-D-arabinopyranosyl isothiocyanate (AITC) and N-alpha-(2,4-dinitro-5-fluorophenyl)-L-alaninamide (Marfey's reagent). Separation of several amphetamine derivatives contained within the same sample was achieved in 2-5 min with high efficiency and selectivity. The proposed approach was also successfully applied to the enantiomeric purity determination of (+)-(S)-amphetamine and (+)-(S)-methamphetamine. Similar results were obtained with beta-blockers, and the separation of 10 enantiomers was carried out in less than 3 min, whereas the individual separation of several beta-blocker enantiomers was performed in 1 min or less.
Collapse
Affiliation(s)
- Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1211 Geneva 4, Switzerland.
| | | | | | | | | | | |
Collapse
|
17
|
Enantiomeric separation of acidic compounds by nano-liquid chromatography with methylated-β-cyclodextrin as a mobile phase additive. J Sep Sci 2009; 32:1696-703. [DOI: 10.1002/jssc.200800667] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
18
|
Enantiomeric separation of phenylsuccinic acid by cyclodextrin-modified reversed phase high-performance liquid chromatography. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11771-009-0034-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
19
|
Guihen E, Hogan AM, Glennon JD. High-speed microchip electrophoresis method for the separation of (R,S)-naproxen. Chirality 2009; 21:292-8. [DOI: 10.1002/chir.20575] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
20
|
León AG, Olives AI, del Castillo B, Martín MA. Influence of the presence of methyl cyclodextrins in high-performance liquid chromatography mobile phases on the separation of β-carboline alkaloids. J Chromatogr A 2008; 1192:254-8. [DOI: 10.1016/j.chroma.2008.03.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 03/24/2008] [Accepted: 03/27/2008] [Indexed: 10/22/2022]
|
21
|
Shpigun OA, Ananieva IA, Budanova NY, Shapovalova EN. Use of cyclodextrins for separation of enantiomers. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2003v072n12abeh000817] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
22
|
Hernández-Borges J, Aturki Z, Rocco A, Fanali S. Recent applications in nanoliquid chromatography. J Sep Sci 2007; 30:1589-610. [PMID: 17623443 DOI: 10.1002/jssc.200700061] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Since its first introduction by Karlsson and Novotny in 1988 nano-LC has emerged as a complementary and/or competitive separation method to conventional HPLC, offering several advantages such as higher efficiency, ability to work with minute sample sizes and lower consumption of mobile phases, and better compatibility with MS, etc. Although its use was not so extended initially, in the last years new and interesting applications have appeared which deserve to be carefully considered. The aim of this review is therefore to provide an updated and critical survey of different nano-LC applications in analytical chemistry.
Collapse
Affiliation(s)
- Javier Hernández-Borges
- Istituto di Metodologie Chimiche, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma I, Rome, Italy
| | | | | | | |
Collapse
|
23
|
Jiao FP, Huang KL, Ning FR, Hu WG, Yu JG. Chromatographic Separation of Naproxen Enantiomers using Hydroxypropyl‐β‐Cyclodextrin as Chiral Mobile Phase Additive. SEP SCI TECHNOL 2006. [DOI: 10.1080/01496390600674885] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
24
|
Paik MJ, Nguyen DT, Cho IS, Lee S, Kim KR. Measurement and Identification of (R)- and (S)-6-O-Desmethylnaproxen Enantiomers as Diastereomeric O-Ethoxycarbonyl/(R)-(+)-1-Phenylethylamides in Urine by GC and GC-MS. Chromatographia 2006. [DOI: 10.1365/s10337-006-0788-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
25
|
Yang Y, Su B, Yan Q, Ren Q. Separation of naproxen enantiomers by supercritical/subcritical fluid chromatography. J Pharm Biomed Anal 2005; 39:815-8. [PMID: 15951148 DOI: 10.1016/j.jpba.2005.05.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2005] [Revised: 05/06/2005] [Accepted: 05/06/2005] [Indexed: 11/28/2022]
Abstract
An isocratic supercritical/subcritical fluid chromatography method for the separation of naproxen enantiomers on the Kromasil CHI-TBB column was investigated. The mobile phase was composed of supercritical CO2 with 2-propanol as modifier. The experimental conditions were temperature 293 K-323 K, pressure 9.4 MPa-21.3 MPa, and 2-propanol concentration 6%-15% (by mass), respectively. The enthalpic contribution to the overall enantiomer transfer energy was more important than the entropic contribution in the temperature range examined. The preferred operation conditions were 293 K, 9.4 MPa, and the concentration of 2-propanol in the mobile phase 11% (by mass).
Collapse
Affiliation(s)
- Yiwen Yang
- Institute of Pharmaceutical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China.
| | | | | | | |
Collapse
|
26
|
Determination of naproxen with flow injection chemiluminescence of Ru(bpy)32+–PbO2 system and its application for the binding study of naproxen to protein. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.04.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
27
|
Prüss A, Kempter C, Gysler J, Jira T. Evaluation of packed capillary liquid chromatography columns and comparison with conventional-size columns. J Chromatogr A 2004; 1030:167-76. [PMID: 15043266 DOI: 10.1016/j.chroma.2003.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Apart from extracolumn effects peak dispersion in liquid chromatographic columns is caused by the column inlet, the packed bed, and the column outlet. A strategy applicable for independent evaluation of the individual sources of column band broadening was developed on the basis of the linear extrapolation method (LEM). This method was applied to compare the performance of packed capillary LC columns from various commercial suppliers with conventional-size columns. The columns differed widely in their performance with respect to peak shapes and widths for standard substances. The capillary columns were found well packed, but in some cases overall performance would benefit from improving the design of the area between the packed bed and the connecting capillaries, containing frits as well as dead volumes.
Collapse
Affiliation(s)
- Anja Prüss
- Schering AG, Analytical Development 3, Müllerstr 178, D-13342 Berlin, Germany
| | | | | | | |
Collapse
|
28
|
|