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1

Retention in reversed-phase liquid chromatography as a function of mobile-phase composition

Klara Valkó, Lloyd R. Snyder, Joseph L. Glajch

Journal:

Journal of Chromatography A

Year:

1993

Language:

english

File:

PDF, 1.59 MB

english, 1993

2

Retention of Ionizable Compounds on HPLC. 8. Influence of Mobile-Phase pH Change on the Chromatographic Retention of Acids and Bases during Gradient Elution

Canals, Immaculada, Valkó, Klára, Bosch, Elisabeth, Hill, Alan P., Rosés, Martí

Journal:

Analytical Chemistry

Year:

2001

Language:

english

File:

PDF, 118 KB

english, 2001

3

Predictive approaches to increase absorption of compounds during lead optimisation

Valko, Klara, Butler, James, Eddershaw, Peter

Journal:

Expert Opinion on Drug Discovery

Year:

2013

Language:

english

File:

PDF, 554 KB

english, 2013

4

Calculation of Abraham descriptors from experimental data from seven HPLC systems; evaluation of five different methods of calculationElectronic supplementary information (ESI) available: Tables S1 to S5. See http://www.rsc.org/suppdata/p2/b2/b206927j/

Zissimos, Andreas M., Abraham, Michael H., Du, Chau M., Valko, Klara, Bevan, Chris, Reynolds, Derek, Wood, John, Tam, Kin Y.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

2002

Language:

english

File:

PDF, 128 KB

english, 2002

5

Rapid-gradient HPLC method for measuring drug interactions with immobilized artificial membrane: Comparison with other lipophilicity measures

Klara Valko, Chau My Du, Christopher D. Bevan, Derek P. Reynolds, Michael H. Abraham

Journal:

Journal of Pharmaceutical Sciences

Year:

2000

Language:

english

File:

PDF, 291 KB

english, 2000

6

Fast gradient HPLC method to determine compounds binding to human serum albumin. Relationships with octanol/water and immobilized artificial membrane lipophilicity

Klara Valko, Shenaz Nunhuck, Chris Bevan, Michael H. Abraham, Derek P. Reynolds

Journal:

Journal of Pharmaceutical Sciences

Year:

2003

Language:

english

File:

PDF, 200 KB

english, 2003

7

Estimating unbound volume of distribution and tissue binding by in vitro HPLC-based human serum albumin and immobilised artificial membrane-binding measurements

Klára L. Valkó, Shenaz B. Nunhuck, Alan P. Hill

Journal:

Journal of Pharmaceutical Sciences

Year:

2011

Language:

english

File:

PDF, 582 KB

english, 2011

8

Relationships between the reversed-phase liquid chromatographic retention characteristics and physico-chemical parameters of some β-casomorphin peptides

Franka Kálmán, Tibor Cserháti, Klára Valkó, Klaus Neubert

Journal:

Analytica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 638 KB

english, 1992

9

Chromatographic separation and molecular modelling of triazines with respect to their inhibition of the growth of L1210/R71 cells

Klára Valkó, Péter Slégel

Journal:

Journal of Chromatography A

Year:

1992

Language:

english

File:

PDF, 405 KB

english, 1992

10

New chromatographic hydrophobicity index (ϕ0) based on the slope and the intercept of the log k′ versus organic phase concentration plot

Klára Valkó, Péter Slégel

Journal:

Journal of Chromatography A

Year:

1993

Language:

english

File:

PDF, 1.09 MB

english, 1993

11

Porous graphitized carbon and octadecylsilica columns in the separation of some monoamine oxidase inhibitory drugs

Esther Forgács, Klára Valkó, Tibor Cserháti, Kálmán Magyar

Journal:

Journal of Chromatography A

Year:

1993

Language:

english

File:

PDF, 510 KB

english, 1993

12

Trace analysis of impurities in 3′-azido-3′-deoxythymidine by reversed-phase high-performance liquid chromatography and thermospray mass spectrometry

Arkan Almudaris, David S. Ashton, Andrew Ray, Klara Valko

Journal:

Journal of Chromatography A

Year:

1995

Language:

english

File:

PDF, 494 KB

english, 1995

13

Effect of the eluent pH on the thermospray molecular ion intensity of nucleosides

David Ashton, Andrew Ray, Klara Valko

Journal:

Journal of Chromatography A

Year:

1996

Language:

english

File:

PDF, 401 KB

english, 1996

14

The role of chromatography in drug design

Journal:

TrAC Trends in Analytical Chemistry

Year:

1987

Language:

english

File:

PDF, 733 KB

english, 1987

15

Two-dimensional high-performance liquid chromatographic method for assaying S-adenosyl-l-methionine and its related metabolites in tissues

Morteza P. Hamedani, Klára Valkó, Xiaofei Qi, Kevin J. Welham, William A. Gibbons

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1993

Language:

english

File:

PDF, 492 KB

english, 1993

16

Relationships between nucleotide incorporation rates and molecular parameters obtained by molecular modelling and chromatography

Klára Valkó, Péter Slégel

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

1991

Language:

english

File:

PDF, 487 KB

english, 1991

17

A comparative study of the reversed-phase HPLC retention behaviour of S-adenosyl-l-methionine and its related metabolites on Hypersil ODS and Supelcosil™ LC-ABZ stationary phases

Klára Valkó, Morteza P. Hamedani, Tracy L. Ascah, William A. Gibbons

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

1993

Language:

english

File:

PDF, 472 KB

english, 1993

18

Synthesis and biological activity of heteroaryl 3-(1,1-dioxo-2H-(1,2,4)-benzothiadizin-3-yl)-4-hydroxy-2(1H)-quinolinone derivatives as hepatitis C virus NS5B polymerase inhibitors

Rosanna Tedesco, Deping Chai, Michael G. Darcy, Dashyant Dhanak, Duke M. Fitch, Adam Gates, Victor K. Johnston, Richard M. Keenan, Juili Lin-Goerke, Robert T. Sarisky, Antony N. Shaw, Klara L. Valko,

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

2009

Language:

english

File:

PDF, 1.01 MB

english, 2009

19

Application of high-performance liquid chromatography based measurements of lipophilicity to model biological distribution

Journal:

Journal of Chromatography A

Year:

2004

Language:

english

File:

PDF, 365 KB

english, 2004

20

Assessment of quantitative relationships between Kováts' retention index and chemical structure: prediction for pyrido-pyrimidine derivatives

Éva János, Ferenc Darvas, Ottó Papp, Klára Valkó, György Szász

Journal:

Journal of Chromatography A

Year:

1980

Language:

english

File:

PDF, 295 KB

english, 1980

21

Prediction of the high-performance liquid chromatographic retention behaviour of some benzodiazepine derivatives by thin-layer chromatography

Klára Valkó, Sarolta Olajos, Tibor Cserháti

Journal:

Journal of Chromatography A

Year:

1990

Language:

english

File:

PDF, 686 KB

english, 1990

22

Prediction of initial high-performance liquid chromatographic conditions for selectivity optimization in pharmaceutical analysis by an expert system approach

Gábor Szepesi, Klára Valkó

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 778 KB

english, 1991

23

Retention of some ethylenediamine oligomers in reversed-phase chromatography

György Bánhegyi, Tibor Cserháti, Klára Valkó

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 497 KB

english, 1991

24

Displacement chromatography of oligomycins

Klára Valkó, Péter Slégel, Judit Báti

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 434 KB

english, 1987

25

Microwave extraction : A novel sample preparation method for chromatography

Katalin Ganzler, András Salgó, Klára Valkó

Journal:

Journal of Chromatography A

Year:

1986

Language:

english

File:

PDF, 423 KB

english, 1986

26

Lipophilicity and pKa estimates from gradient high-performance liquid chromatography

Roman Kaliszan, Piotr Haber, Tomasz Ba̢czek, Danuta Siluk, Klara Valko

Journal:

Journal of Chromatography A

Year:

2002

Language:

english

File:

PDF, 320 KB

english, 2002

27

Detection of the principal synthetic route indicative impurity in Lamotrigine

David S Ashton, Andrew D Ray, Klara Valko

Journal:

International Journal of Pharmaceutics

Year:

1999

Language:

english

File:

PDF, 124 KB

english, 1999

28

Structure-activity relationships in a series of new antifungal nitroalcohol derivatives

Antal Lopata, Ferenc Darvas, Klára Valkó, Gyula Mikite, Erzsébet Jakucs, Attila Kis-Tamás

Journal:

Pest Management Science

Year:

1983

Language:

english

File:

PDF, 496 KB

english, 1983

29

Retention behaviour of some ring-substituted phenol derivatives on a porous graphitized carbon column

Esther Forgács, Tibor Cserháti, Klára Valkó

Journal:

Journal of Chromatography A

Year:

1992

Language:

english

File:

PDF, 657 KB

english, 1992

30

Comparative investigation of the retention behaviour of nucleoside derivatives on alumina stationary phases in thin-layer chromatography and high-performance liquid chromatography

Klara Valkó, Tibor Cserháti, Esther Forgács

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 534 KB

english, 1991

31

Change of mobile phase pH during gradient reversed-phase chromatography with 2,2,2-trifluoroethanol–water as mobile phase and its effect on the chromatographic hydrophobicity index determination

Sonia Espinosa, Elisabeth Bosch, Martı́ Rosés, Klára Valkó

Journal:

Journal of Chromatography A

Year:

2002

Language:

english

File:

PDF, 585 KB

english, 2002

32

Determination of solute descriptors of tripeptide derivatives based on high-throughput gradient high-performance liquid chromatography retention data

Monika Plass, Klara Valko, Michael H Abraham

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 79 KB

english, 1998

33

Chromatographic Hydrophobicity Index by Fast-Gradient RP-HPLC: A High-Throughput Alternative to log P/log D

Valkó, Klára, Bevan, Chris, Reynolds, Derek

Journal:

Analytical Chemistry

Year:

1997

Language:

english

File:

PDF, 367 KB

english, 1997

34

Rapid Gradient RP-HPLC Method for Lipophilicity Determination: A Solvation Equation Based Comparison with Isocratic Methods

Du, Chau My, Valko, Klara, Bevan, Chris, Reynolds, Derek, Abraham, Michael H.

Journal:

Analytical Chemistry

Year:

1998

Language:

english

File:

PDF, 84 KB

english, 1998

35

Lipidic peptides. XI. Quantitative structure-activity relationships of a series of lipidic amino acid conjugates of β-lactam antibiotics

Klára Valkó, István Tóth, Peter Ward, Péter Slégel, William A. Gibbons

Journal:

International Journal of Pharmaceutics

Year:

1982

Language:

english

File:

PDF, 592 KB

english, 1982

36

Physicochemical profile of macrolides and their comparison with small molecules

Višnja Stepanić, Dinko Žiher, Vesna Gabelica-Marković, Dubravko Jelić, Shenaz Nunhuck, Klara Valko, Sanja Koštrun

Journal:

European Journal of Medicinal Chemistry

Year:

2012

Language:

english

File:

PDF, 1.77 MB

english, 2012

37

In vitro measurement of drug efficiency index to aid early lead optimization

Klara Valko, Elisabetta Chiarparin, Shenaz Nunhuck, Dino Montanari

Journal:

Journal of Pharmaceutical Sciences

Year:

2012

Language:

english

File:

PDF, 519 KB

english, 2012

38

Estimation of Volume of Distribution in Humans from High Throughput HPLC-Based Measurements of Human Serum Albumin Binding and Immobilized Artificial Membrane Partitioning

Hollósy, Ferenc, Valkó, Klára, Hersey, Anne, Nunhuck, Shenaz, Kéri, György, Bevan, Chris

Journal:

Journal of Medicinal Chemistry

Year:

2006

Language:

english

File:

PDF, 441 KB

english, 2006

39

Relationship between the hydrophobic and hydrophilic molecular parameters of some synthetic nucleosides, determined by means of adsorptive and reversed-phase thin-layer chromatography

Tibor Cserháti, Klára Valko

Journal:

Journal of Biochemical and Biophysical Methods

Year:

1990

Language:

english

File:

PDF, 952 KB

english, 1990

40

[Journal of Chromatography Library] Retention and Selectivity in Liquid Chromatography - Prediction, Standardisation and Phase Comparisons Volume 57 || Chapter 2 Retention prediction of pharmaceutical compounds

Year:

1995

Language:

english

File:

PDF, 2.83 MB

english, 1995

41

2,5-Diketopiperazines as Potent, Selective, and Orally Bioavailable Oxytocin Antagonists. 3. Synthesis, Pharmacokinetics, and in Vivo Potency

Borthwick, Alan D., Davies, Dave E., Exall, Anne M., Hatley, Richard J. D., Hughes, Jennifer A., Irving, Wendy R., Livermore, David G., Sollis, Steve L., Nerozzi, Fabrizio, Valko, Klara L., Allen, Mic

Journal:

Journal of Medicinal Chemistry

Year:

2006

Language:

english

File:

PDF, 265 KB

english, 2006

42

High-throughput physicochemical andin vitroADMET screening

Dr Klara Valko, Derek P. Reynolds

Journal:

American Journal of Drug Delivery

Year:

2005

Language:

english

File:

PDF, 291 KB

english, 2005

43

Interaction of Diquat and Paraquat with Glutathione Studied by Means of Charge-Transfer Chromatography

Cserháti, Tibor, Valkó, Klára

Journal:

Journal of Liquid Chromatography & Related Technologies

Year:

1991

Language:

english

File:

PDF, 445 KB

english, 1991

44

Application of drug efficiency index in drug discovery: a strategy towards low therapeutic dose

Montanari, Dino, Chiarparin, Elisabetta, Gleeson, Matthew Paul, Braggio, Simone, Longhi, Raffaele, Valko, Klara, Rossi, Tino

Journal:

Expert Opinion on Drug Discovery

Year:

2011

Language:

english

File:

PDF, 582 KB

english, 2011

45

RAPID METHOD FOR ESTIMATING OCTANOL-WATER PARTITION COEFFICIENT (LOG P OCT ) FROM ISOCRATIC RP-HPLC AND A HYDROGEN BOND ACIDITY TERM (A)

Du, Chau My, Valko, Klara, Bevan, Chris, Reynolds, Derek, Abraham, Michael H.

Journal:

Journal of Liquid Chromatography & Related Technologies

Year:

2001

Language:

english

File:

PDF, 300 KB

english, 2001

46

Multivariate Methods to Evaluate the Role of Mixed Supports in Reversed-Phase Thin-Layer Chromatography

Gullner, Gábor, Cserháti, Tibor, Bordás, Barna, Valkó, Klára

Journal:

Journal of Liquid Chromatography

Year:

1989

Language:

english

File:

PDF, 568 KB

english, 1989

47

General Approach for the Estimation of Octanol/Water Partition Coefficient by Reversed-Phase High-Performance Liquid Chromatography

Journal:

Journal of Liquid Chromatography

Year:

1984

Language:

english

File:

PDF, 672 KB

english, 1984

48

Improving the passive permeability of macrocyclic peptides: Balancing permeability with other physicochemical properties

Thansandote, Praew, Harris, Robert M., Dexter, Hannah L., Simpson, Graham L., Pal, Sandeep, Upton, Richard J., Valko, Klara

Journal:

Bioorganic & Medicinal Chemistry

Year:

2015

Language:

english

File:

PDF, 1002 KB

english, 2015

49

Rapid Method for the Estimation of Octanol / Water Partition Coefficient (Log Poct) from Gradient RP-HPLC Retention and a Hydrogen Bond Acidity Term (Sigma alpha2H)

Valko, Klara, Du, Chau, Bevan, Christopher, Reynolds, Derek, Abraham, Michael

Journal:

Current Medicinal Chemistry

Year:

2001

Language:

english

File:

PDF, 122 KB

english, 2001

50

[Handbook of Analytical Separations] Separation Methods in Drug Synthesis and Purification Volume 1 || Chapter 12 Measurements of physical properties for drug design in industry

Year:

2000

Language:

english

File:

PDF, 4.07 MB

english, 2000

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