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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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.
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.
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.
ofloxacin and zopiclone using hydroxy-propyl-beta-cyclodextrin as chiral selector and thermodynamic studies of complexation
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).
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.
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.
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.
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.