Cumulative CAMAG Bibliography Service CCBS

Our CCBS database includes more than 11,000 abstracts of publications. Perform your own detailed search of TLC/HPTLC literature and find relevant information.

The Cumulative CAMAG Bibliography Service CCBS contains all abstracts of CBS issues beginning with CBS 51. The database is updated after the publication of every other CBS edition. Currently the Cumulative CAMAG Bibliography Service includes more than 11'000 abstracts of publications between 1983 and today. With the online version you can perform your own detailed TLC/HPTLC literature search:

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      79 016
      Chromatographic behaviour of diastereoisomers XIII
      M. PALAMEREVA*, I. KOZEKOV, (*Dept. Chem., Univ. Sofia, 1 James Bourchier Avenue, Sofia 1126, Bulgaria)

      Adsorptivity of esters of Z- and E-2,3-diphenylpropenoic acids and similar compounds on silica in terms of the Snyder theory. J. Chromatogr. A 758, 135-144 (1997). Study of TLC of 8 Z and E esters of the type C6H5CH=C(C6H5)CO5R using 20 computer-selected mobile-phases on the basis of the Snyder theory, the mobile phases having strength e, equal to 0.165 or 0.250 and different values of localization, m and polarity, p'. Calculation of the energy of adsorption of all groups participating in the solute structures under selected conditions using the available values. Discussion of the adsorptivity and the retention using the ester group in combination with the configuration of the diastereoisomers, and of the tuning effect of p' on e and adsorptivity.

      Keywords:
      Classification: 2c
      81 055
      Evaluation of lipophilicity by principal components analysis
      C. SARBU*, S. TODOR, (*Babes-Bolyai Univ., Fac. of Chem. and Chemical Engineering, Arany Janos 11, 3400 Cluj-Napoca, Roumania)

      J. Planar Chromatogr. 11, 123-126 (1998). Determination of the lipophilicity and specific hydrophobic surface of thirteen amido esters of ethanolamine by RP-TLC on silica gel impregnated with a 15% solution of paraffin oil in dichloromethane. Development with water - methanol mixtures. Regular retention behavior was observed for compounds studied, their RM values decreased linearly with increasing concentration of methanol in the mobile phase. Visualization under UV 254 nm.

      Classification: 2c, 17c
      84 012
      Review of research on quantitative structure-retention relationships in thin-layer chromatography
      Q.S. WANG, L. ZHANG, (Nat. Lab. of Elemento-Organic Chem., Nankai Univ., Tianjin 300071, P. R. China)

      J. Liq. Chrom. & Rel. Technol. 22, 1-14 (1999). Review on the quantitative structure-retention relationship (QSRR) in TLC including a description of the establishment of QSRR, which is based on physico-chemical parameters, non-specific parameters, topological indices, and a combination of physico-chemical parameters. The application of QSSR for prediction of retention, determination of lipophilicity, evaluation of some physico-chemical parameters of chemicals, evaluation of biological activity of compounds, and explanation of separation mechanisms is also reviewed.

      Keywords:
      Classification: 2c
      87 009
      Lipophilicity determination of N-(benzothiazol-2-yl)-a-amino alkyl phosphonic diesters by RP-HPLC and RP-HPTLC
      L. ZHANG*, Z.-G. LI, R.-Q. HUANG, Q.-S. WANG, (Nat. Lab. of Natural and Biomimetic Drugs, School of Pharm., Beijing Univ., Beijing 100083, China)

      Chin. J. Chem. 18, 872-876 (2000). HPTLC of 19 N-(benzothiazol-2-yl)-a-amino alkyl phosphonic diesters on RP-18 with methanol-water mixtures, the concentration of methanol ranging from 75% to 90% in steps of 5%. Detection under UV. The correlation of the chromatographic parameters k' and Rf with the lipophilicity parameter (Clog P) was established. Rapid and simple method; alternative for lipophilicity measurement.

      Keywords:
      Classification: 2c, 25
      94 014
      Interpretation of the mechanisms of chromatographic separation on CN-silica
      H. MAJSTOROVIC, D. RATKOV-ZEBELJAN, Z. Lj. TESIC, Dusanka M. MILOJKOVIC-OPSENICA* (*Faculty of Chemistry, University of Belgrade, P. O. Box 158, 11001 Belgrade, Serbia and Montenegro)

      Part II. TLC of some phenols. J. Planar Chromatogr. 17, 9-13 (2004). TLC separation of some phenolic compounds (phloroglucinol, 2-aminophenol, 4-hydroxybenzaldehyde, 4-methoxyphenol, salicylic acid, phenol, 4-tert-butylphenol, 2,4-dichlorophenol, 2,6-dimethylphenol) on CN-phases, silica gel and polyacrylonitrile with 14 different mobile phases at ambient temperature in a HPTLC horizontal developing chamber. Detection by spraying with 0.05 % fluorescein solution in ethanol and subsequent exposure to UV light at 366 nm.

      Classification: 2c, 7
      96 126
      Relationships between the lipophilicity and anticonvulsant activity of N-benzyl-2-azaspiro[4
      Jolanta Obniska*, K. Kaminski (*Department of Pharmaceutical Chemistry, Jagiellonian University Medical College, Medyczna 9, 30-688 Krakow, Poland)

      J. Planar Chromatogr. 18, 240-243 (2005). TLC of twenty-one N-benzyl-2-azaspiro[4.4]nonane- and [4.5]decane-1,3-dione derivatives on RP-18 with a mixture of n-propanol and TRIS buffer (pH 7.0) in a chamber saturated for 30 min. Detection under UV light at 254 nm. Examination of chromatographic behavior revealed a linear correlation between RM values and the concentraton of n-propanol in the mobile phase.

      Classification: 2c, 32a
      104 003
      Determination of the lipophilicity of twenty-seven imidazo[2,1-c][1,2,4]triazine derivatives with strong biological activity by reversed-phase TLC
      L. KOMSTA*, K. SZTANKE, P. MACZKA, M. UCHEREK, R. SKIBINSKI, A. GUMIENICZEK (*Department of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland; lukasz.komsta@am.lublin.pl)

      Comparison with results obtained by use of computational algorithms J. Planar Chromatogr. 22, 327-331 (2009) TLC of 27 novel imidazo[2,1-c][1,2,4]triazine derivatives together with 12 compounds with known literature log P values (as reference calibration data) on RP-18 with methanol - water binary mobile phases containing different proportions of methanol in horizontal chambers without chamber saturation. Detection under UV 254 nm. Using principal-component analysis the obtained results were compared with results from nine computational methods.

      Classification: 2c
      113 002
      Influence of the regression technique on the extrapolated retention values of single-point adsorption compounds on silica gel
      L. KOMSTA*, P. SMARDZ, R. PIETRAS, R. SKIBINSKI, A. GUMIENICZEK (*Department
      of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland, lukasz.komsta@umlub.pl)

      J. Planar Chromatogr. 27, 229-232 (2014). TLC of nine compounds with single point adsorption: diphenylamine (1), indol (2), 2-naphtol (3), 1-naphtol (4), 1-naphtylamine (5), 4-toluidine (6), carbazole (7), 4-chloraniline (8), and thymol (9) on silica gel with six modifiers: acetone, dioxane, hexane, isopropanol, methylethylketone, ethyl acetate, and tetrahydrofurane (in hexane), in six concentrations: 5 %, 10 %, 15 %, 20 %, 30 %, and 40 %. Qualitative determination by absorbance measurement at UV 254 nm. Retention values allowed to consider weighted regression with 1/x weights during retention extrapolation.

      Classification: 2c