ORCID "0000-0001-7494-3077" Kimya Bölümü için listeleme
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Analytical and preparative scale separation of enantiomers of chiral drugs by chromatography and related methods
Gümüştaş, Mehmet; Özkan, Sibel Ayşıl; Chankvetadze, Bezhan (Bentham Science Publishers B.V., 2018)While the amino acids, enzymes and hormones are chiral, chirality plays significant role in the life of plants, animals, as well as the human being. Chirality of molecules is important in various industries, such as ... -
Analytical application of polymethylene blue-multiwalled carbon nanotubes modified glassy carbon electrode on anticancer drug irinotecan and determination of its ionization constant value
Karadaş Bakırhan, Nurgül; Şanlı, Senem; Akmeşe, Bediha; Doğan Topal, Burcu; Can, Alp; Özkan, Sibel Ayşıl (Elsevier B.V., 2013)The voltammetric behavior of anticancer drug irinotecan (IRT) was investigated at poly (methylene blue)/multi-walled carbon nanotube (PMB/MWCNT) modified glassy carbon electrode (GCE). The modified electrode surface was ... -
Carbon quantum dots co-catalyzed with multiwalled carbon nanotubes and silver nanoparticles modified nanosensor for the electrochemical assay of anti-HIV drug Rilpivirine
Aftab, Saima; Kurbanoğlu, Sevinç; Özçelikay, Göksu; Karadaş Bakırhan, Nurgül; Shah, Afzal; Özkan, Sibel Ayşıl (Elsevier B.V., 2019)In this study, a novel and sensitive voltammetric nanosensor has been developed for the first time, for the detection of Rilpivirine based on amine-functionalized multiwalled carbon nanotubes (NH 2 -fMWCNT) with Ag ... -
Determination of pK a values of cefdinir and cefixime by LC and spectrophotometric methods and their analysis in pharmaceutical dosage forms
Şanlı, Nurullah; Şanlı, Senem; Sızır, Ümit; Gümüştaş, Mehmet; Özkan, Sibel Ayşıl (Friedr. Vieweg und Sohn Verlags GmbH, 2011)The pK a values of cefdinir and cefixime, which are used in the treatment of bacterial infections, have been determined precisely in water and methanol-water binary mixtures (20% v/v) using spectrophotometric titration and ... -
Determination of pKa values of some antihypertensive drugs by liquid chromatography and simultaneous assay of lercanidipine and enalapril in their binary mixtures
Gümüştaş, Mehmet; Şanlı, Senem; Şanlı, Nurullah; Özkan, Sibel Ayşıl (Elsevier B.V., 2010)In this study, pKa values were determined using the dependence of the retention factor on the pH of the mobile phase for three ionizable substances, namely, enalapril, lercanidipine and ramipril (IS). The effect of the ... -
Development and validation of a stability-indicating RP-LC method for the determination of anticancer drug epirubicin in pharmaceuticals
Kurbanoğlu, Sevinç; Bozal Palabıyık, Burçin; Gümüştaş, Mehmet; Şanlı, Senem; Uslu, Bengi; Özkan, Sibel Ayşıl (Taylor and Francis Inc., 2014)In the present paper, sensitive, rapid, and different analytical methodology was developed for the determination of anticancer drug epirubicin (EPR). The mixture of epirubicin and moxifloxacin as internal standard was ... -
Development of a HILIC method for the determination of 5-fluorouracil from nano drug delivery systems and rat skin extracts
Amasya, Gülin; Gümüştaş, Mehmet; Badıllı, Ulya; Özkan, Sibel Ayşıl; Tarımcı, Nilüfer (Elsevier B.V., 2018)This is the first report in literature using hydrophilic interaction liquid chromatography (HILIC) in combination with diode array detector (DAD) for stability indicating determination of 5-Fluorouracil (5-FU) from its ... -
Electroanalytical characterization of levodropropizine and its voltammetric determination in pharmaceuticals
Levodropropizine is a cough suppressant and easily oxidizable at the carbon-base electrodes. The electrooxidative behavior and determination of levodropropizine on glassy carbon and boron-doped diamond electrodes were ... -
Electrochemical approach for the sensitive determination of anticancer drug epirubicin in pharmaceuticals in the presence of anionic surfactant
Bozal Palabıyık, Burçin; Kurbanoğlu, Sevinç; Gümüştaş, Mehmet; Uslu, Bengi; Özkan, Sibel Ayşıl (Editions de l'Academie Republique Populaire, 2013)In this research, sensitive, rapid, different electrochemical methods were developed for the determination of anticancer drug epirubicin. The aim of the study was to fully validated determination of epirubicin in ... -
Erratum to: UPLC versus HPLC on drug analysis: advantageous, applications and their validation parameters
The authors would like to call the reader’s attention to the fact that unfortunately there were several references faultily assigned in Table 1. -
Investigation of voltammetric behavior and electroanalytical determination of anticancer epirubicin via glassy carbon electrode using differential pulse and square wave voltammetry techniques
Kurbanoğlu, Sevinç; Bozal Palabıyık, Burçin; Gümüştaş, Mehmet; Uslu, Bengi; Özkan, Sibel Ayşıl (Editions de l'Academie Republique Populaire, 2015)The electrochemical oxidation of epirubicin was investigated using cyclic, differential pulse and square wave voltammetry at glassy carbon electrode. The aim of the study was to determine epirubicin levels in pharmaceuticals ... -
Modern Assay Techniques for Cancer Drugs: Electroanalytical and Liquid Chromatography Methods
Kurbanoğlu, Sevinç; Karadaş Bakırhan, Nurgül; Gümüştaş, Mehmet; Özkan, Sibel Ayşıl (Taylor and Francis Ltd., 2018)In the past decades, patients who have chemotherapy treatment have considerably increased number. At this point, the development of rapid precise, and reliable methods are very important to analyze cancer drugs from their ... -
Nanosized Drug Carriers for Oral Delivery of Anticancer Compounds and the Importance of the Chromatographic Techniques
Şengel Türk, Ceyda Tuba; Gümüştaş, Mehmet; Uslu, Bengi; Özkan, Sibel Ayşıl (Elsevier, 2017)Cancer is the primary leading cause of mortality in the world. The key of a successful cancer treatment depends on many important parameters, such as the application route, anticancer compound, and dosage form. Among the ... -
A novel core-shell-based chromatographic method supported by ratio derivative spectrophotometry for the simultaneous determination of perindopril, indapamide, and amlodipine ternary mixtures
Karadurmuş, Leyla; Gümüştaş, Mehmet; Kurbanoğlu, Sevinç; Uslu, Bengi; Özkan, Sibel Ayşıl (TUBİTAK, 2018)In this work, ratio spectra of the frst derivative spectrophotometric and liquid chromatographic methods have been described for the frst time for the simultaneous determination of perindopril (PER), indapamide (IND), and ... -
Optimization of stability indicating LC method for the sensitive in vitro determination from solid lipid nanoparticles and ex vivo analysis from rat skin of etofenamate
Gümüştaş, Mehmet; Şengel Türk, Ceyda Tuba; Badıllı, Ulya; Amasya, Gülin; Özkan, Sibel Ayşıl; Tarımcı, Nilüfer (Bentham Science Publishers B.V., 2017)Introduction: Etofenamate (2-(2-hydroxyethoxy) ethyl 2-[[3-(trifluoromethyl)phenyl]amino] benzoate) (ETO) is a yellowish viscous liquid which is a nonsteroidal anti-inflammatory drug (NSAID) that has been applied topically ... -
Recent progress on the sensitive detection of cardiovascular disease markers by electrochemical-based biosensors
Karadaş Bakırhan, Nurgül; Özçelikay, Göksu; Özkan, Sibel Ayşıl (Elsevier B.V., 2018)Cardiovascular disease is the most reason for deaths in all over the world. Hence, biomarkers of cardiovascular diseases are very crucial for diagnosis and management process. Biomarker detection demand is opened the ... -
A sensitive and selective RP-LC method for the simultaneous determination of the antihypertensive drugs, enalapril, lercanidipine, nitrendipine and their validation
A RP-LC method is presented, which is sensitive and selective for the simultaneous determination of enalapril-lercanidipine and enalapril-nitrendipine binary mixtures in their pharmaceutical dosage forms. The analyte peaks ... -
UPLC versus HPLC on drug analysis: Advantageous, applications and their validation parameters
Liquid chromatography (LC) is a separation technique used in many different areas to aid the identification and quantification of substances in various matrices. LC techniques with various detection modes have been widely ...