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:

  • Full text search: Enter a keyword, e.g. an author's name, a substance, a technique, a reagent or a term and see all related publications
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      83 008
      Prediction of retention using polar and nonpolar surface areas of single-solvent mobile phases
      D. NUROK*, R.R. SORRELL, C.L. McCAIN, M.C. FROST, P. HAJDU, T.C. POWELL, T. LAHR, R.M. KLEYLE, (*Dept. of Chem., Indiana Univ.-Purdue Univ. at Indianapolis, 402 N. Blackford Street, Indianapolis, IN 46202, USA)

      J. Planar Chromatogr. 12, 42-45 (1999). Preparation of p-nitrobenzyl esters of dansyl derivatives of fifteen amino acids and chromatography on silica gel with a series of single-solvent mobile phases. Multiple linear regression was used to construct a model that predicts retention as a function of the polar and the nonpolar surface areas of each solvent. The values of the intercept and regression coefficients are solute-dependent, but the form of the predictive equation is concordant for all solvents tested.

      Keywords:
      Classification: 2c
      85 009
      Study of the solvolytic cleavage of octadecyl ligands from the surface of RP-18-type stationary phases in TLC
      G. KOWALIK, B. KLAMA, R. OKOPSKA, T. KOWALSKA*, (*Inst. of Chem., Silesian Univ., 9 Szkolna Street, 40-006 Kattowice, Poland)

      Part 3. TLC and Raman spectroscopic quantification of the extent of cleavage for buffer pH from 1 to 10. J. Planar Chromatogr. 13, 25-29 (2000). Investigation of the resistance of RP-18 stationary phases to cleavage of the chemical bond coupling the octadecyl ligands to the silica matrix by repeated developments with methanol-water buffer solutions (from pH 1-10), firstly by indirect measurement after one, two, four and eight passages of the aforementioned solutions through the layer, by monitoring the retention of an homologous series of higher fatty acids. The second procedure consisted in application of laser Raman spectroscopy. It was demonstrated that the cleavage of octadecyl ligands is not a negligable process, but that the extent of cleavage was quite substantial - usually 20% - at all pH other than neutral.

      Keywords:
      Classification: 2c
      88 019
      On the thermal instability of selected TLC-type alkyl chemically bonded stationary phases and on its physical implications
      W. PRUS, J. FABIA, C. DOBOSZ, B. SZLOSARCZYK, A. STRZADALA, T. KOWALSKA*, (*Inst. of Chem., Silesian Univ., Katowice, Poland)

      J. Planar Chromatogr. 14, 378-383 (2001). Report of experimental results relating to the thermal instability of selected alkyl chemically bonded stationary phases as a result of their irradiation with a high-power neodymium laser, the light source of a Raman spectrometer used for the investigation. The results reported furnish a convincing confirmation of earlier intuitions, described as "vague speculations about the possible aromatization of these ligands".

      Keywords:
      Classification: 2c, 3b
      95 102
      The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behavior of metal complexes
      R. M. BAOSIC, D. M. MILOJKOVIC-OPSENICA, Z. L. TESIC* (*Faculty of Chemistry, University of Belgrade, Studentski trg 16, P. O. Box 158, 11001 Belgrade, Serbia and Montenegro)

      J. Planar Chromatogr. 17, 250-254 (2004). TLC of three series of beta - diketonato complexes of the type [M(acac)3-n(phacphac)n], [M(acac)3-n(phacphSac)n], and [M(acac)3-n(phSacphSac)n] (where M represents cobalt(III), chromium(III), or ruthenium(III), acac is the 2,4-pentanedionato ion, phacphac is the 1,3-diphenyl-1,3-propanedionato ion, phacphSac is 3-mercapto-1,3-diphenyl-prop-2-en-1-one, phSacphSac is the 3-mercapto-1,3-diphenyl-prop-2-en-1-thion ion, and n = 0-3) on silica gel with five mono-component (chloroform, toluene, dichloromethane, xylene, tetrahydronaphthalene) and five two-component eluents (n-amyl acetate - carbon tetrachloride 1:1, n-butyl acetate - carbon tetrachloride 2:3, chloroform - carbon tetrachloride 1:1 and 3:7, and dichloromethane - carbon tetrachloride 4:1. Separations were performed in a horizontal chamber after equilibration for 30 min. After development the colored spots were readily visible.

      Classification: 2c, 33a
      103 005
      Flash column chromatograms estimated from thin-layer chromatography data
      J.D. FAIR*, CH.M. KORMOS (*Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Unit 3060, Storrs, CT 06269-3060, USA)

      J. Chromatogr. A 1211 (1-2), 49-54 (2008). Presentation of a spreadsheet that provides information on the amount of silica gel needed, the optimal fraction size, and the degree of separation to be expected before flash chromatography is attempted. Information is based on sample mass and TLC data given. This is the first utility of its kind to accurately estimate the retention volume and band volume of analytes, as well as the fraction numbers expected to contain each analyte, and the resolution between adjacent peaks. The information allows users to select optimal parameters for preparative-scale separations before the flash column itself is attempted; ensuring a successful first separation.

      Keywords: preparative TLC
      Classification: 2d
      121 014
      Lipophilicity of new anticancer 1,6- and 3,6-diazaphenothiazines by use of RP TLC and different computational methods
      Beata MORAK-M?ODAWSKA*, K. PLUTA, M. JELE? (Dep. of Org. Chem. The Med. Univ. of Silesia, Jagiello?ska 4, 41-200 Sosnowiec, Poland, bmlodawska@sum.edu.pl)

      J. Chromatogr. Sci. 56 (4), 376-381 (2018). Investigation of the lipophilicity of new anticancer active 10-substituted 1,6- and 3,6-diazaphenothiazines using RP TLC. Determination of their lipophilicity (RM0 and log PTLC) with mixtures of acetone and Tris buffer as mobile phases. The obtained results showed significant intercorrelation between RM0 and the specific hydrophobic surface area b, revealing congeneric classes of diazaphenothiazines. Transformation of the parameter RM0 into parameter log PTLC by use of the calibration curve. Comparison of the parameter log PTLC with computationally calculated lipophilic parameters log Pcalcd. Discussion of the lipophilicity with the structure elements and correlation with molecular descriptors, ADME properties and in vitro anticancer activities.

      Classification: 2d, 23e
      66 005
      Lipophike character of cardiac glycosides
      G.L. BLAGI*, A.M. BARBORO, M.C. GUERRA, P.A. BOREA, M. RECANATINI, (*Inst. Farm., Univ. Bologna, Bologna, Italy)

      RM values as lipophilicity parameters. J. Chromatogr. 504, 163-178 (1990). Measurement of RM values for a series of 41 cardiac glycosides and aglycones. Calculation of the RM values for 19 compounds by means of the D RM values. Discussion of the correlation of the measured RM values with literature-reported values, HPLC data and octanol- water partition coefficients (log p).

      Keywords:
      Classification: 2d, 14
      70 005
      Determination of kinetic parameters for precoated silica gel thin layer chromatography plates by forced flow development
      W.P.N. FERNANDO, C.F. POOLE*, (*Dept. of Chem., Wayne State University, Detroit, MI 48202, USA)

      J. Planar Chromatogr. 4, 278-287 (1991). Identification of the kinetic contributions to band broadening for TLC and HPTLC plates precoated with silica, (and porous particle-loaded membrane sheets (EmporeTM)) from plate height measurements over a wide velocity range using forced flow development. The Foley-Dorsey peak shape model was used to calculate plate height parameters; plate height and velocity data were fitted to the van Demter and Knox equations yielding realistic values for the equation coefficients.

      Keywords:
      Classification: 2d