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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      77 009
      Sorption behavior of aromatic amines on impregnated silica gel layers
      A. MOHAMMAD, M. AJMAL, S. ANWAR, (Dept. Appl. Chem., Z.H. Coll. Eng. & Technol., Aligarh, 202002 India)

      J. Chromatogr. Sci. 33, 383-385 (1995). Study of the TLC behavior of 27 aromatic amines on silica and silica impregnated with aqueous solutions of various Na salts, i.e. chloride, hydroxide, nitrate, nitrite, acetate, sulfate and H phosphate, etc., and with cyclohexane - benzene 1:4. Comparison of results on silica with those on impregnated silica. Discussion of the effects of the nature of substituent groups and the number of C atoms in the molecule on the mobility of amines.

      Keywords:
      Classification: 2c, 17a
      79 020
      Dependence of RM values on the topological index °B for selected isomers of fatty acids of cis and trans configuration
      A. PYKA, (Silesian Acad. of Med., Fac. of Pharm., 4 Jagiellonska Street, PL-41-200 Sosnowiec, Poland)

      Part XIV. J. Planar Chromatogr. 10, 121-123 (1997). TLC of selected isomer fatty acids of cis - trans (Z - E) configuration (cis- and trans-9-octadecenoic acid, cis- and trans-11-octadecenoic acid) on RP-18 silica and Kieselguhr impregnated with a solution of paraffin oil in hexane (10%, 12.5%, or 15%) with acetic acid. Detection of the isomers of the acids with iodine vapor. In order to characterize the TLC behavior of the investigated acids, the topological index °B and the new chromatographic index I (CHR) were calculated. Results are presented as the dependence of RM values on these indexes.

      Keywords:
      Classification: 2c, 11a
      82 008
      Structure - retention relationships and physicochemical characterization of solutes in thin-layer chromatography
      T. CSERHATI, E. FORGACS, (Hungarian Acad. of Sci., Chem. Res. Center, Inst. of Chem., P.O. Box 17, 1525 Budapest, Hungary)

      J. AOAC Int. 81, 1105-1107 (1998). Critical evaluation of experimental methods and calculation procedures used to elucidate the molecular basis of thin-layer chromatography separations in both adsorption and reversed-phase modes. It addresses the quantitative relationship between molecular structure and retention and the determination of the solute physicochemical parameters by TLC.

      Keywords:
      Classification: 2c
      84 080
      Chemometric characterization of the Rf values of pesticides for thin-layer chromatographic systems of the type silica + weakly polar diluent-polar modifier
      E. SOCZEWINSKI*, T. TUZIMSKI, (Dept. of Inorg. and Anal. Chem., Med. Acad., Staszica 6, 20-081 Lublin, Poland)

      Part II. J. Planar Chromatogr. 12, 186-189 (1999). Method for the selection of suitable adsorbent-mobile phase systems. Determination of plots of Rf against mobile phase composition in systems of the type silica-heptane + polar modifier (ethyl acetate, tetrahydrofuran, or dioxane) of 19 more widely used pesticides. Pairs or sets of compounds were defined for 30 pesticides (see also E. Soczewinski, T. Tuzimski, K. Pomorska, J. Planar Chromatogr. 11, 90-93 (1998)) which were poorly separated in all systems investigated; these sets will be investigated using other adsorbents with different selectivity characteristics.

      Keywords:
      Classification: 2c, 29
      87 110
      (Identification of Jianpi Xiaoshi capsules
      X. NIN (Nin Xiaofeng)*, W. LI (Li Weifeng), Y. LI (Li Yan), (*Coll. Pharm., Xian Jiaotong Univ., Xian 710061, P.R. China)

      J. Chinese Trad. Patent Med. (Zhongchengyao) 23 (1), 20-23 (2001). TLC on silica gel with 1) petroleum ether (60-90°C) - ethyl acetate 50:1, 2) ethyl acetate - formic acid - acetic acid - water 15:1:1:2, 3) chloroform - ethyl acetate - methanol - water 15:40:22:10, 4) ethyl acetate - methanol - water 100:17:13, 5) cyclohexane - ethyl acetate 22:1, 6) toluene - ethyl acetate - formic acid 40:8:1, 7) benzene - acetone 9:1. Detection 1) by spraying with 5% vanillin-sulfuric acid reagent and heating at 110°C, 2) with 5% sulfuric acid in ethanol and heating at 105°C, 3) with 3% AlCl3 and under UV 365 nm, 4) with acetoanhydride - sulfuric acid 9:1 and heating at 110°C, 4) with aceto anhydride - sulfuric acid and heating at 110°C, 5) with 20% perchoric acid and heating at 105°C for 10 min. Identification by finger print technique.

      Keywords:
      Classification: 2c, 32c
      94 024
      Comparison of lateral interactions with monocarboxylic and a,?-dicarboxylic acids
      K. KACZMARSKI, M. SAJEWICZ, A. PIENIAK, R. PIETKA, Teresa KOWALSKA* (*Institute of Chemistry, Silesian University, 9 Szkolna Street, Katowice, Poland)

      J. Liq. Chrom. Rel. Technol. 27, 1967-1980 (2004). Part of a study originally devoted to investigating lateral interactions of monocarboxylic and a,?-dicarboxylic acids analyzed on a low-activity stationary phase (cellulose powder) with low-polarity monocomponent mobile phases (decalin for monocarboxylic acids and 1,4-dioxan for a,?-dicarboxylic acids). TLC of lauric, myristic, palmitic, 3-phenylpropionic, 2-phenylbutyric, and 4-phenylbutyric acid with decalin and of succinic, adipic, and suberic acid with 1,4-dioxan on cellulose. Detection with an ethanolic solution of bromocresol green. Quantitative determination at 625 nm.

      Classification: 2c, 11a
      97 002
      Use of RP-TLC for determination of log P of isomeric chalcones and cyclic chalcone analogues
      Z. Rozmer, P. Perjési*, K. Takács-Novák (*Institute of Pharmaceutical Chemistry, University of Pécs, Rókus str. 2, H-7624 Pécs, Hungary)

      J. Planar Chromatogr. 19, 124-128 (2006). Determination of log P values of 29 biologically active chalcone and cyclic chalcone analogues E-2-(X-benzylidene)-1-indanones and E-2-(X-benzylidene)-1-tetralones by an optimized and validated RP-TLC method. RP-TLC was performed on silanized silica gel with methanol - water 3:2. The experimentally determined log P(TLC) values were compared with the log P values predicted by use of the CLOGP program.

      Classification: 2c
      116 011
      Establishing dependences between different lipophilic parameters of new potentially biologically active n-substituted-2-phenylacetamide derivatives by applying multivariate methods
      G. VASTAG*, Suzana APOSTOLOV, B. MATIJEVI?, S. PETROVI? (*Dep. of Chem., Biochem. & Environm. Prot., Fac. of Sci., Univ. of Novi Sad, Trg D. Obradovi?a 3, Novi Sad 21000, Serbia, djendji.vastag@dh.uns.ac.rs)

      J. Chromatogr. Sci. 53 (2), 312-319 (2015). Investigation of lipophilicity for newly synthesized N-substituted-2-phenylacetamide derivatives by TLC on RP-18 in the presence of one protic (methanol) and one aprotic solvent (acetonitrile) followed by mathematical evaluation using different software packages. Establishment of the dependences between the partition coefficient, log P as the standard measure of lipophilicity and the alternative lipophilic parameters using the retention chromatographic constant RM0 and m values (the intercept and the slope of the linear dependence between volume fractions of the organic solvent and the retention parameters obtained experimentally by TLC), employing linear regression analysis and multivariate methods, cluster analysis (CA) and principal component analysis (PCA). All applied methods gave approximately similar results. Although there is a linear dependence between the two chromatographic parameters RM0 and m, only RM0 shows suitable similarity with the standard measure of lipophilicity of the investigated N-substituted-2-phenylacetamide derivatives at the given conditions. This proves that the chromatographic retention constant, RM0, obtained by reversed phase TLC could be successfully used for the description of lipophilicity of the compounds. The results confirmed that the applied linear regression analysis and the multivariate analysis (CA and PCA) have the ability to compare lipophilic parameters of the investigated phenylacetamide derivatives obtained in different ways.

      Classification: 2d