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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      84 009
      Thin-layer chromatography of mixed tris-b-diketonato metal complexes on polyacrylonitrile sorbent
      Z. LJ. TESIC*, R.M. BAOSIC, D.M. MILOJKOVIC-OPSENICA, (*Fac. Chem., Univ. Belgrade, P.O. Box 158, 11001 Belgrade, Yugoslavia)

      J. Chromatogr. A 847, 303-307 (1999). TLC on polyacrylonitrile with 10 mobile phases. Establishment of hRf values decreasing when the oxygen atom in b-diketonato ligand substituted by a less electronegative sulfur atom, and the substitution of acac ligand resulting in hRf value decreasing, and a linear dependence between RM values of the complexes and the number of acac ligands substituted by phacphSac ligands. Discussion of the separation mechanism and factors.

      Keywords:
      Classification: 2c, 26
      86 013
      A preliminary study of the quantitative structure-retention relationship of ginsenosides in normal-phase thin-layer chromatography
      ZHOU XUAN, LIN LEMING*, ZHANG JUN, (*Dalian Inst. Chem. Phys., Chin. Acad. Sci., Dalian 116012, P.R. China)

      Chinese J. Chromatogr. (Sepu) 18 (3), 206-211 (2000). Determination of the TLC retention of ten ginsenosides on silica gel with chloroform - ethyl acetate - methanol - water 15:40:22:10. Calculation of seventeen structure parameters of the ginsenosides for QSRR study, including topologic indices and physicochemical properties. A novel parameter "E" was presented according to the differences of the parent substances the ginsenosides are composed of. Selection of Aw, 8B and E among the parameters by optimization, which were employed in the derived multi-parameter regression equation. Discussion of the relationships between the retention and the molecular structure of the compounds.

      Keywords:
      Classification: 2c
      92 053
      Correlation between reversed-phase chromatographic retention data and structure of several thiazole derivatives
      N.U. PERISIC-JANJIC*, T.L. DJAKOVIC-SEKULIC, K. POPOV-PERGAL, (*Inst. of Chem., Fac. of Sci., Trg D. Obradovica 3, 21 000, 21 000 Novi Sad, Serbia and Montenegro)

      Proc. Intern. Symp. on Planar Separations Plan. Chrom. 357-362 (2003). Investigation of the retention behavior of thiazoles as function of organic modifier content of the eluents using two types of stationary phases. TLC of 12 3-benzyloxycarbonyl-5-substituted 2,4-dioxotetrahydro-1,3-thiazoles on silica gel, impregnated with paraffin oil, and rice starch with NH3 conc. - methanol, conc. NH3 conc. - dioxane, and NH3 conc. - acetone with different modifier content (from 0.01 to 0.34 ) for methanol, dioxane, and acetone. Visualization under UV 254 nm.

      Keywords:
      Classification: 2c, 24, 32a
      96 017
      Use of database of plots of pesticide retention (Rf) against mobile-phase compositions for fractionation of a mixture of pesticides by micropreparative Thin-Layer Chromatography
      T. TUZIMSKI*, E. SOCZEWINSKI (*Department of Inorganic and Analytical Chemistry, Medical University, Staszica 6, 20–081 Lublin, Poland, ttuzim@panaceum.am.lublin.pl)

      Chromatographia 59 (1-2), 121-128 (2004). Relationships between Rf values and mobile phase composition have been determined for urea herbicides and fungicides in normal-phase systems (NP) of the type silica-nonpolar or weakly polar diluent (heptane, toluene, diisopropyl ether) – polar modifier (ethyl acetate, tetrahydrofuran, dioxane, ethyl-methyl ketone and 2-propanol). These relationships constitute a retention database which has enabled to choose optimum systems for preliminary fractionation of a multicomponent mixture of pesticides by zonal micropreparative TLC. The mixture was applied from the edge of the layer in the “frontal + elution” mode which increased the separation efficiency because of displacement effects. The separated simpler fractions were applied to a silica plate and rechromatographed. The plate was videoscanned, furnishing a real picture of the plate showing preliminary separation of the simpler pesticide fractions. Complete separation of the fractions was carried out by two-dimensional thin-layer chromatography on plates with chemically bonded-cyanopropyl silica stationary phase using non-aqueous eluent in the first direction and aqueous reversed-phase eluent in the second direction.

      Keywords: agricultural HPTLC
      Classification: 2c, 29
      102 003
      A functional-based approach to the retention in thin layer chromatographic screening systems
      L. KOMSTA (Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland)

      Anal. Chim. Acta 629 (1-2), 66-72 (2008). Presentation of a QSRR approach for prediction of the retention in seven TLC screening systems. Optimization of the model by uninformative variable elimination-partial least squares (UVE-PLS) reduced the variables involved. Final equations with 7 - 32 variables were obtained which explain 32 - 60 % of overall explained variance. Their predictive ability (Q2) includes a range of 25 - 54 % (LOO crossvalidation) and 12 - 43 % (external validation).

      Keywords:
      Classification: 2c
      112 004
      Exploring hidden trends in classic and micellar thin-layer chromatographic retention of model compounds by chemometric methods
      L. KOMSTA*, R. SKIBINSKI, E. GOWIN, P. MACZKA (*Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland, lukasz.komsta@umlub.pl)

      J. Liq. Chromatogr. Relat. Technol. 36, 2348-2362 (2013). Nonmicellar 2(1) and micellar (2) TLC of 35 model compounds with different functional groups on silica gel, RP-18 and CN phase with modifiers in hexane and water for (1) and on RP-8 with three surfactants, namely cetyltrimetylammoniumbromide, sodium dodecylsulfate, and Triton-X100 dissolved in water above CMC for (2). A principal component analysis (PCA) allowed for a molecular structure-retention relationship study.

      Classification: 2c
      115 007
      Chemometric comparison of thin-layer chromatography, gradient high-performance liquid chromatography, and computational methods for lipophilicity assessment of model compounds
      L. KOMSTA*, R. PIETRAS, Ewelina BARTUZI, R. SKIBINSKI, Anna 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. 28, 115-118 (2015). TLC of 35 compounds on RP-18 and cyano phase with six modifiers (acetonitrile, acetone, dioxane, propan-2-ol, methanol, and tetrahydrofurane). The extrapolated Rm data were recomputed and compared to HPLC results with 2 modifiers. HPLC (in gradient mode) and TLC perform in comparable manner in the lipophilicity assessment of the investigated model compounds. With its simplicity, it is a strong argument to use TLC in lipophilicity studies.

      Classification: 2c, 4c
      119 016
      RP-18 chromatographic-based study of the blood–brain barrier permeability of selected sunscreens and preservatives
      J. PYZOWSKI*, E. BRZEZINSKA, A. SOBANSKA (*Department of Analytical
      Chemistry, Faculty of Pharmacy, Medical University of Lodz, ul. Muszy?skiego
      1, 90-151 ?ód?, Poland, jaroslaw.pyzowski@umed.lodz.pl)

      J. Planar Chromatogr. 30, 275-284 (2017). HPTLC of selected cosmetic raw materials (UV filters and preservatives) on RP-18 with acetonitrile ‒ pH 7.4 phosphate buffered saline 7:3. Qualitative determination at UV 254 nm. Molecular descriptors were calculated to examine the behavior towards the blood-brain barriers.

      Classification: 2c