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1

Quality assessment for tramadol in pharmaceutical preparations with thin layer chromatography and densitometry

Jan Krzek, Małgorzata Starek

Journal:

Biomedical Chromatography

Année:

2004

Langue:

english

Fichier:

PDF, 356 KB

english, 2004

2

A review of analytical techniques for determination of oxicams, nimesulide and nabumetone

Małgorzata Starek, Jan Krzek

Journal:

Année:

2009

Langue:

english

Fichier:

PDF, 465 KB

english, 2009

3

Reversed-phase thin-layer chromatography technique for the comparison of the lipophilicity of selected non-steroidal anti-inflammatory drugs

Starek, Małgorzata, Komsta, Łukasz, Krzek, Jan

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Année:

2013

Langue:

english

Fichier:

PDF, 221 KB

english, 2013

4

Determination of danofloxacin and its photodegradation products by HPLC-DAD. Kinetic evaluation of the degradation process and identification of photoproducts by mass spectrometry

Hubicka, Urszula, Żuromska-Witek, Barbara, Żmudzki, Paweł, Stanisławski, Michał, Krzek, Jan

Journal:

Analytical Methods

Année:

2014

Langue:

english

Fichier:

PDF, 519 KB

english, 2014

5

Direct separation, identification and quantification of epimers 22R and 22S of budesonide by capillary gas chromatography on a short analytical column with Rtx®-5 stationary phase

Jan Krzek, Janusz S. Czekaj, Włodzimierz Rzeszutko, Anna Jończyk

Journal:

Journal of Chromatography B

Année:

2004

Langue:

english

Fichier:

PDF, 278 KB

english, 2004

6

Simultaneous identification and quantitative determination of neomycin sulfate, polymixin B sulfate, zinc bacytracin and methyl and propyl hydroxybenzoates in ophthalmic ointment by TLC

Jan Krzek, Małgorzata Starek, Anna Kwiecień, Włodzimierz Rzeszutko

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Année:

2001

Langue:

english

Fichier:

PDF, 161 KB

english, 2001

7

Densitometric determination of diclofenac, 1-(2,6-dichlorophenyl)indolin-2-one and indolin-2-one in pharmaceutical preparations and model solutions

Jan Krzek, Malgorzała Starek

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Année:

2002

Langue:

english

Fichier:

PDF, 254 KB

english, 2002

8

The HPLC determination of propane-1,2,3-triyl trinitrite and impurities: (2RS)-3-hydroxypropane-1,2-diyl dinitrate and 2-hydroxypropane-1,3-diyl dinitrate in ointment

Jan Krzek, Maria Moniczewska, Grażyna Zabierowska-Ślusarczyk

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Année:

2003

Langue:

english

Fichier:

PDF, 216 KB

english, 2003

9

Densitometric determination of impurities in drugs: Part IV. Determination of N-(4-aminobenzoyl)-l-glutamic acid in preparations of folic acid

Jan Krzek, Anna Kwiecień

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Année:

1999

Langue:

english

Fichier:

PDF, 114 KB

english, 1999

10

Evaluation of a TLC Densitometric Method for Analysis of Azole Antifungal Agents

Radosław J. Ekiert, Jan Krzek, Włodzimierz Rzeszutko

Journal:

Chromatographia

Année:

2008

Langue:

english

Fichier:

PDF, 244 KB

english, 2008

11

Determination of Piroxicam and Degradation Products in Drugs by TLC

Małgorzata Starek, Jan Krzek, Monika Tarsa, Marek Żylewski

Journal:

Chromatographia

Année:

2009

Langue:

english

Fichier:

PDF, 380 KB

english, 2009

12

Simultaneous Determination of Fusidic Acid, m‐ and p‐Hydroxybenzoates and Butylhydroxyanisole by TLC with Densitometric Detection in UV

Krzek, Jan, Hubicka, Urszula, Szczepańczyk, Justyna, Kwiecień, Anna, Rzeszutko, Włodzimierz

Journal:

Journal of Liquid Chromatography & Related Technologies

Année:

2006

Langue:

english

Fichier:

PDF, 191 KB

english, 2006

13

Chromatographic and Densitometric Analysis of Hydrochlorothiazide, Walsartan, Kandesartan, and Enalapril in Selected Complex Hypotensive Drugs

Stolarczyk, Mariusz, Anna, Maślanka, Krzek, Jan

Journal:

Journal of Liquid Chromatography & Related Technologies

Année:

2008

Langue:

english

Fichier:

PDF, 163 KB

english, 2008

14

Densitometric quantification of monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG) in extracts of fresh samples of Erigeron canadensis collected at different stages of growth

Ellnain, Marek, Hubicka, Urszula, Żuromska, Barbara, Janeczko, Zbigniew, Krzek, Jan

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2011

Langue:

english

Fichier:

PDF, 69 KB

english, 2011

15

Dependence of the kinetic and thermodynamic parameters on hydrophilic–lipophilic character of alprazolam, clonazepam, diazepam, doxepin and haloperidol in alkaline environment

Maślanka, Anna, Krzek, Jan, Szlósarczyk, Marek, Żmudzki, Paweł, Wach, Katarzyna

Journal:

International Journal of Pharmaceutics

Année:

2013

Langue:

english

Fichier:

PDF, 657 KB

english, 2013

16

Determination of sparfloxacin and its photodegradation products by thin-layer chromatography with densitometry detection. Kinetic evaluation of the degradation process and identification of photoproduct by mass spectrometry

Hubicka, Urszula, Żuromska-Witek, Barbara, Żmudzki, Paweł, Maślanka, Anna, Kwapińska, Natalia, Krzek, Jan

Journal:

Analytical Methods

Année:

2013

Langue:

english

Fichier:

PDF, 414 KB

english, 2013

17

Photodegradation assessment of ciprofloxacin, moxifloxacin, norfloxacin and ofloxacin in the presence of excipients from tablets by UPLC-MS/MS and DSC

Hubicka, Urszula, Żmudzki, Paweł, Talik, Przemysław, Żuromska-Witek, Barbara, Krzek, Jan

Journal:

Chemistry Central Journal

Année:

2013

Langue:

english

Fichier:

PDF, 493 KB

english, 2013

18

Separation and characterization of ciprofloxacin, difloxacin, lomefloxacin, norfloxacin, and ofloxacin oxidation products under potassium permanganate treatment in acidic medium by UPLC-MS/MS

Hubicka, Urszula, Żmudzki, Paweł, Żuromska-Witek, Barbara, Zajdel, Paweł, Pawłowski, Maciej, Krzek, Jan

Journal:

Année:

2013

Langue:

english

Fichier:

PDF, 929 KB

english, 2013

19

Analysis of lignans in Schisandra chinensis fruits, leaves, biomasses from in vitro cultures and food supplements

Ekiert, Radosław J., Szopa, Agnieszka, Ekiert, Halina, Krzek, Jan, Dzik, Ewa

Journal:

Journal of Functional Foods

Année:

2013

Langue:

english

Fichier:

PDF, 552 KB

english, 2013

20

Stability of Atenolol, Acebutolol and Propranolol in Acidic Environment Depending on its Diversified Polarity

Krzek, Jan, Kwiecień, Anna, Żylewski, Marek

Journal:

Pharmaceutical Development and Technology

Année:

2006

Langue:

english

Fichier:

PDF, 202 KB

english, 2006

21

Voltammetric Determination of Zinc, Copper, and Selenium in Selected Raw Plant Material

Szlósarczyk, Marek, Piech, Robert, Paśko, Paweł, Opoka, Włodzimierz, Krzek, Jan

Journal:

Analytical Letters

Année:

2011

Langue:

english

Fichier:

PDF, 329 KB

english, 2011

22

DETERMINATION OF DANOFLOXACIN AND ITS PHOTODEGRADATION PRODUCTS BY THIN-LAYER CHROMATOGRAPHY: KINETIC EVALUATION OF DEGRADATION PROCESS

Hubicka, Urszula, Żuromska-Witek, Barbara, Knapczyk, Danuta, Krzek, Jan

Journal:

Journal of Liquid Chromatography & Related Technologies

Année:

2014

Langue:

english

Fichier:

PDF, 375 KB

english, 2014

23

A degradation study of cefepime hydrochloride in solutions under various stress conditions by TLC-densitometry

Dąbrowska, Monika, Starek, Małgorzata, Krzek, Jan, Papp, Elżbieta, Król, Piotr

Journal:

Biomedical Chromatography

Année:

2015

Langue:

english

Fichier:

PDF, 500 KB

english, 2015

24

Roxithromycin degradation by acidic hydrolysis and photocatalysis

Kwiecień, Anna, Krzek, Jan, Żmudzki, Paweł, Matoga, Urszula, Długosz, Maciej, Szczubiałka, Krzysztof, Nowakowska, Maria

Journal:

Analytical Methods

Année:

2014

Langue:

english

Fichier:

PDF, 487 KB

english, 2014

25

Stability of ciprofloxacin and norfloxacin in the presence and absence of metal ions in acidic solution

Hubicka, Urszula, Krzek, Jan, Walczak, Maria

Journal:

Pharmaceutical Development and Technology

Année:

2010

Langue:

english

Fichier:

PDF, 1.55 MB

english, 2010

26

TLC-UV and -VIS Densitometric Detection Method for Determination of Oxyphenonium Bromide and its Degradation Products in Tablets

Hubicka, Urszula, Krzek, Jan, Szczyrbowska, Olga

Journal:

Journal of Liquid Chromatography & Related Technologies

Année:

2009

Langue:

english

Fichier:

PDF, 388 KB

english, 2009

27

Application of hanging copper amalgam drop electrode for voltammetric determination of selenium content in fruiting bodies of selected mushrooms

Piech, Robert, Szlósarczyk, Marek, Opoka, Włodzimierz, Paczosa-Bator, Beata, Baś, Bogusław, Krzek, Jan, Muszyńska, Bożena

Journal:

International Journal of Environmental & Analytical Chemistry

Année:

2014

Langue:

english

Fichier:

PDF, 252 KB

english, 2014

28

Oxidative stress as an etiological factor and a potential treatment target of psychiatric disorders. Part 1. Chemical aspects and biological sources of oxidative stress in the brain

Moniczewski, Andrzej, Gawlik, Maciej, Smaga, Irena, Niedzielska, Ewa, Krzek, Jan, Przegaliński, Edmund, Pera, Joanna, Filip, Małgorzata

Journal:

Pharmacological Reports

Année:

2015

Langue:

english

Fichier:

PDF, 733 KB

english, 2015

29

TLC-densitometric determination of tenoxicam and its degradation products in pharmaceutical preparations and after hydrolysis in solutions

Starek, Małgorzata, Krzek, Jan, Tarsa, Monika

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2011

Langue:

english

Fichier:

PDF, 202 KB

english, 2011

30

Assay of β-Carotene in Dietary Supplements and Fruit Juices by TLC-Densitometry

Starek, Małgorzata, Guja, Anna, Dąbrowska, Monika, Krzek, Jan

Journal:

Food Analytical Methods

Année:

2015

Langue:

english

Fichier:

PDF, 511 KB

english, 2015

31

Oxidative stress as an etiological factor and a potential treatment target of psychiatric disorders. Part 2. Depression, anxiety, schizophrenia and autism

Smaga, Irena, Niedzielska, Ewa, Gawlik, Maciej, Moniczewski, Andrzej, Krzek, Jan, Przegaliński, Edmund, Pera, Joanna, Filip, Małgorzata

Journal:

Pharmacological Reports

Année:

2015

Langue:

english

Fichier:

PDF, 563 KB

english, 2015

32

Lipophilicity study of fifteen fluoroquinolones by reversed-phase thin-layer chromatography

Hubicka, Urszula, Żuromska-Witek, Barbara, Komsta, Łukasz, Krzek, Jan

Journal:

Analytical Methods

Année:

2015

Langue:

english

Fichier:

PDF, 2.14 MB

english, 2015

33

Chromatographic-Densitometric Analysis of Chosen Fluoroquinolones on TLC Plates Using Mobile Phases with Different Viscosity

Krzek, Jan, Żuromska-Witek, Barbara, Hubicka, Urszula, Kaczmarska, Marta

Journal:

Journal of Liquid Chromatography & Related Technologies

Année:

2015

Langue:

english

Fichier:

PDF, 846 KB

english, 2015

34

Derivative spectrophotometric method for simultaneous determination of zofenopril and fluvastatin in mixtures and pharmaceutical dosage forms

Stolarczyk, Mariusz, Maślanka, Anna, Apola, Anna, Rybak, Wojciech, Krzek, Jan

Journal:

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Année:

2015

Langue:

english

Fichier:

PDF, 640 KB

english, 2015

35

Pharmacological and therapeutic properties of new derivatives of renin inhibitors and endothelin receptor antagonists, and the methods of their determination

Stolarczyk, Mariusz, Apola, Anna, Maślanka, Anna, Krzek, Jan

Journal:

Analytical Methods

Année:

2015

Langue:

english

Fichier:

PDF, 3.14 MB

english, 2015

36

Photocatalytic degradation of sulfamethoxazole in aqueous solution using a floating TiO2-expanded perlite photocatalyst

Długosz, Maciej, Żmudzki, Paweł, Kwiecień, Anna, Szczubiałka, Krzysztof, Krzek, Jan, Nowakowska, Maria

Journal:

Journal of Hazardous Materials

Année:

2015

Langue:

english

Fichier:

PDF, 672 KB

english, 2015

37

Stability Studies of Clonazepam, Diazepam, Haloperidol, and Doxepin with Diverse Polarities in an Acidic Environment

Maślanka, Anna, Krzek, Jan, Stolarczyk, Mariusz, Walczak, Maria, Głogowska, Agata

Journal:

Journal of AOAC International

Année:

2011

Langue:

english

Fichier:

PDF, 486 KB

english, 2011

38

Stress Degradation Studies on Azithromycin and Development of a Validated Stability-Indicating TLC-Densitometric Method with HPLC/Electrospray Ionization-MS Analysis of Degradation Products

Kwiecień, Anna, Krzek, Jan, Walczak, Maria

Journal:

Journal of AOAC International

Année:

2012

Langue:

english

Fichier:

PDF, 560 KB

english, 2012

39

Determination of Moxifloxacin and its Oxidation Products with Kinetic Evaluation Under Potassium Permanganate Treatment in Acidic Solution by Ultra-Performance Liquid Chromatography/Tandem Mass Spectrometry

Hubicka, Urszula, Żmudzki, Paweł, Zajdel, Paweł, Krzek, Jan

Journal:

Journal of AOAC International

Année:

2013

Langue:

english

Fichier:

PDF, 706 KB

english, 2013

40

Simultaneous Determination of Eight Hypotensive Drugs of Various Chemical Groups in Pharmaceutical Preparations by HPLC-DAD

Stolarczyk, Mariusz, Hubicka, Urszula, Zuromska-Witek, Barbara, Krzek, Jan

Journal:

Journal of AOAC International

Année:

2015

Langue:

english

Fichier:

PDF, 499 KB

english, 2015

41

Lipophilicity study of eight cephalosporins by reversed-phase thin-layer chromatographic method

Dąbrowska, Monika, Komsta, Łukasz, Krzek, Jan, Kokoszka, Kinga

Journal:

Biomedical Chromatography

Année:

2015

Langue:

english

Fichier:

PDF, 952 KB

english, 2015

42

Chemical study of (+)-(S)-ibuprofen enantiomer chiral inversion by means of chiral TLC separation

Starek, Małgorzata, Krzek, Jan

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2012

Langue:

english

Fichier:

PDF, 211 KB

english, 2012

43

TLC-UV analysis of indole compounds and other nitrogen-containing bases in the fruiting bodies of Lactarius deterrimus

Muszyńska, Bożena, Maślanka, Anna, Sułkowska-Ziaja, Katarzyna, Krzek, Jan

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2007

Langue:

english

Fichier:

PDF, 114 KB

english, 2007

44

Quantification of saponins in different plant parts of Lysimachia L. Species by validated HPTLC-densitometric method

Podolak, Irma, Hubicka, Urszula, Żuromska-Witek, Barbara, Janeczko, Zbigniew, Krzek, Jan

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2013

Langue:

english

Fichier:

PDF, 170 KB

english, 2013

45

Simultaneous analysis of hydrochlorothiazide, triamterene, furosemide, and spironolactone by densitometric TLC

Maślanka, Anna, Krzek, Jan, Stolarczyk, Mariusz

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2009

Langue:

english

Fichier:

PDF, 208 KB

english, 2009

46

TLC-densitometric method for quantification of oxaprozin and its degradation products in pharmaceutical preparations

Starek, Małgorzata, Krzek, Jan, Tarsa, Monika

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2010

Langue:

english

Fichier:

PDF, 173 KB

english, 2010

47

Qualitative and quantitative analysis of diosmin in tablets by thin-layer chromatography with densitometric UV detection

Janeczko, Zbigniew, Hubicka, Urszula, Krzek, Jan, Podolak, Irma

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2003

Langue:

english

Fichier:

PDF, 123 KB

english, 2003

48

TLC-densitometric determination of azithromycin in pharmaceutical preparations

Kwiecień, Anna, Krzek, Jan, Biniek, Łukasz

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2008

Langue:

english

Fichier:

PDF, 274 KB

english, 2008

49

Separation, identification, and quantitative analysis of the epimers of cefaclor by TLC-densitometry

Dąbrowska, Monika, Krzek, Jan

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2010

Langue:

english

Fichier:

PDF, 364 KB

english, 2010

50

Densitometric analysis of 2-arylpropionate derivatives in pharmaceutical preparations

Starek, Małgorzata, Krzek, Jan, Stoch, Marzena

Journal:

JPC - Journal of Planar Chromatography - Modern TLC

Année:

2008

Langue:

english

Fichier:

PDF, 630 KB

english, 2008