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
  • Browse and search by CBS classification: Select one of the 38 CBS classification categories where you want to search by a keyword
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      84 138
      Reversed-phase planar chromatography of racemic flavones
      L. LEPRI*, M. Del BUBBA, V. COAS, A. CINCINELLI, (Dept. of Public Health, Epidemiology and Environmental Anal. Chem., Univ. of Florence, 50121 Florence, Italy)

      J. Liq. Chrom. & Rel. Technol. 22, 105-118 (1999). TLC for separation of racemic compounds. TLC of 19 structurally related racemic flavanones (e.g. 5-methoxy-, 6-hydroxy-, 6-methoxy-, 7-hydroxy-, 2'-hydroxy-, 4'-hydroxy-, 4'-methoxyflavanone, pinocembrin, naringenin, isosakuranetin, sakuranetin, naringin, eriodictyol, homoeriodictyol, hesperetin, taxifolin) by RP planar chromatography using both home-made microcrystalline cellulose triacetate (MCTA) layers and mobile phase modifiers, such as b-cyclodextrin and bovine serum albumin, on RP-18. Except for the two glycosides, 5-methoxy-, 7-hydroxy- and 5-hydroxy-7-methoxyflavanone, the enantiomers of other flavanones were all resolved by at least one of the three chiral phases tested. Detection under UV 254 and 364 nm. Densitometry of racemic flavanones at 254 nm on MCTA layers developed with ethanol - water mixtures on RP-18 after elution with chiral mobile phases.

      Keywords:
      Classification: 8a, 38
      89 192
      Thin-layer chromatography - a useful technique for the separation of enantiomers
      Y. BEREZNITSKI, R. THOMPSON, E. O'NEILL, N. GRINBERG*, (*Merck Res. Lab., P.O. Box 2000, R80Y-315, Rahway, NJ 07065.0914, USA)

      JAOAC Int. 84, 1242-1251 (2001). Review of the literature concerning the separation of enantiomers. Because of the process of trial and error present in developing a chiral separation method, the mechanism underlying each form of separation is also presented. Methods are presented according to the main mechanism governing the particular separation. Theoretical aspects of chiral discrimination and interactions in enantiomeric separations (separations using ligand exchange, inclusion compounds, charge transfer, ion-pair mechanism, tailor-made polymers, cellulose layers, protein phases, macrocyclic antibiotic phases) are discussed.

      Keywords:
      Classification: 38
      102 166
      Enantioseparation and oscillatory transenantiomerization of S,R-(+/-)-ketoprofen, as investigated by means of thin layer chromatography with densitometric detection
      M. SAJEWICZ, M. GONTARSKA, M. WRÓBEL, Teresa KOWALSKA* (*Institute of Chemistry, Silesian University, 9 Szkolna Street, 40-006 Katowice, Poland; kowalska@us.edu.pl)

      J. Liq. Chromatogr. Relat. Technol. 30, 2193-2208 (2007). TLC of S,R-(+/-)-ketoprofen on silica gel (prewashed with methanol - water 9:1 and impregnated by dipping in a 0.03 mol/L solution of L-arginine in methanol for 2 s at 22 °C) with acetonitrile - water 5:1 containing several drops of acetic acid (to fix the pH < 4.8) in one-dimensional and two-dimensional development. Quantitative determination by absorbance measurement at 252 nm. The results of the investigations demonstrated the ability of S,R-(+/-)-ketoprofen to undergo oscillatory transenantiomerization.

      Classification: 38
      113 124
      Thin-layer chromatographic enantioseparation of
      ofloxacin and zopiclone using hydroxy-propyl-beta-cyclodextrin as chiral selector and thermodynamic studies of complexation
      N. SALAMA, H. ZAAZAA, L. EL HALIM*, M. SALEM, L. EL FATTAH (*Pharmaceutical Chemistry Department, National Organization for Drug Control and Research [NODCAR], 6 Abu Hazem Street, Pyramids Ave, P.O. Box 29, Giza, Egypt, lobna_nodcar@yahoo.com)

      J. Planar Chromatogr. 27, 166-173 (2014). HPTLC of racemic mixtures of zopiclone and ofloxacin and their enantiomers eszopiclone (1) and levofloxacin (2), respectively, on silica gel with ethanol - acetonitrile - glacial acetic acid - diethylamine - water containing 50 mg hydroxy propyl-beta-cyclodextrin 4:2:3:1:1, pH 4, for zopiclone and ethanol - acetonitrile - glacial glacial acetic acid - diethylamine - water containing 30 mg hydroxy propyl-beta-cyclodextrin 4:4:3:2:1, pH 4.5, for ofloxacin. Quantitative determination by absorbance measurement at 304 and 330 nm for (1) and (2), respectively. Linearity was in the range of 1-4 μg/zone for (1) and 2-7 μg/zone for (2). The intermediate/interday/intra-day precisions were below 2 % (n=3). The LOD and LOQ were 154 and 466 ng/zone for (1) and 351 and 1095 ng/zone for (2), respectively. Average recovery was 101.8 % for (1) and 101.5 % for (2).

      Classification: 38
      62 149
      Rapid separation of anomeric purine nucleosides by thin-layer chromatography on a chiral stationary phase
      R.S. FELDBERG*, L. M. REPPUCCI, (*Dep. Biol., Tufts Univ., Medford, MA 02155, USA)

      J. Chromatogr. 410, 226-229 (1987). TLC on chiral plates with methanol - water - acetonitrile 50:50:30-400. Detection under UV 254 nm. Discussion of the resolution of the enantiomers with different percentages of acetonitrile.

      Classification: 21a, 38
      67 242
      Normal phase TLC separation of enantiomers using chiral ion interaction agents
      J.D. DUNCAN, D.W. ARMSTRONG*, A.M. STALCUP, (*Dep. Chem., Univ. Missouri-Rolla, Rolla, Missouri 65401, USA)

      J. Liquid Chromatogr. 13, 1091-1103 (1990). TLC of several chiral aromatic amino alcohols on silica or diol-bonded silica with a mobile phase containing (IR)-(-)-ammonium-10-camphorsulfonate or N-benzoxycarbonyl-glycyl-L-proline (ZGP). Comparison between various N-CBZ-amino acid derivatives as chiral counter ions/chiral mobile phase additives.

      Classification: 38
      71 201
      The possibilities of optical isomer separation by TLC on layers of chitin and its derivatives
      J.K. ROZYLO, I. MALINOWSKA, (Fac. of Chem., M. Curie-Sklodowska Univ., 20-031 Lublin, Poland)

      J. Planar Chromatogr. 6, 34-37 (1993). Use of chitin and derivatives prepared by treatment of chitin with transition metals for the separation of optical isomers of amino acids: good separation on chitin-Cu with binary or ternary mixtures of organic solvents. The dependence of hRf values on the composition of the mobile phases has been demonstrated.

      Keywords:
      Classification: 3b, 38
      74 158
      Chromatography of methyl derivatives of 5-ethyl-5-phenyl-2-thiobarbituric acid
      J. BOJARSKI*, M. KUBASZEK, H. BARTON, E. CHMIEL, (*Dept. Org. Chem., Sch. Med., Jagiellonian Univ., 30-048 Krakow, Poland)

      J. Chromatogr. 668, 481-484 (1994). Separation of the two pairs of monomethyl and dimethyl derivatives from the methylation of 5-ethyl-5-phenyl-2-thiobarbituric acid by TLC on silica with 1) chloroform, 2) chloroform - toluene - acetone 2:2:1, 3) chloroform - toluene - acetone 2:2:1, 3) cyclohexane - ethyl acetate 4:1. Detection under UV 254 nm. Also HPLC.

      Keywords:
      Classification: 38