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. Planar Chromatogr. 21, 129-134 (2008). TLC of racemic metoprolol, propranolol, carvedilol, bisoprolol, salbutamol, and labetalol on silica gel impregnated with optically pure L-Glu with acetonitrile - methanol - water - dichloromethane 10:3:1:2 or 10:3:3:2 (for propanolol), and on silica gel impregnated with L-Asp, with acetonitrile - methanol - water - dichloromethane 5:3:1:3, or acetonitrile - methanol - water - glacial acetic acid 50:10:5:7. Detection with iodine vapor; the detection limits were 0.23, 0.1, 0.27, 0.25, 0.2, and 0.2 µg for each enantiomer, respectively.
Asian J. Chem. 20(7), 5409 - 5413 (2008). HPTLC of atomoxetine HCl on silica gel with acetonitrile - acetic acid 9:1. Quantitative determination by absorbance measurement at 269 nm. The method was linear in the range of 100-1000 µg/mL. The recovery was 99.8 %. The method was suitable for routine analysis of atomoxetine HCl in its pharmaceutical preparations.
Asian J. Chem. 19(5), 3375-3381 (2007). The TLC method described in USP 28 does not separate all the related substances of alprazolam. An alternative HPTLC method is described for separation and estimation of starting material and synthesis related intermediates in alprazolam: 2-chloro acetamide-5-chloro benzophenone (impurity 1) i.e. starting material, nordiazepam (impurity 2), thionordiazepam (impurity 3), 2-(2-aceto hydrazinyl)-7-chloro-5-phenyl-3H-1, 4-benzodiazapine (impurity 4). The hRf values of alprazolam, impurity 4, impurity 3, impurity 2, and impurity 1 were 25, 16, 77, 45, and 83 respectively. The HPTLC method developed is capable of detecting impurities at a level of 0.05%.
Indian Drugs 45 (7), 536 - 541 (2008). Chyawanprash contains many phytoconstituents, out of which gallic acid, catechin, epicatechin are considered to be responsible for the antioxidant activity and piperine is responsible for the bioavailability enhancing effect. HPTLC with toluene - ethyl acetate - formic acid - ethanol 60:40:3:4. Quantitative determination by absorbance measurement at 254 nm. The hRf values of epicatechin, catechin, gallic acid, and piperine were 13, 32, 44, and 82 respectively. Recovery was 99.0 % for epicatechin, 96.1 % for catechin, 102.5 % for gallic acid and 100.6 % for piperine in Chyawanprash. The results obtained were compared with similar formulations available in the market employing tests for identification and purity determination. The developed method may be considered as an additional tool for quality control of Chyawanprash.
60th Indian Pharmaceutical Congress PA-203, (2008). HPTLC of paracetamol and nabumetone in combined tablet dosage form on silica gel with toluene - isopropyl alcohol - acetic acid 80:20:1. Quantitative determination by absorbance measurement at 236 nm. The method was linear in the range of 50-250 ng/spot for both compounds. The method was suitable for routine quality control of tablet dosage form.
Chromatographia 69 (1-2), 151-155 (2009). HPTLC of paracetamol and caffeine on RP18W with methanol - acetic acid - water 250:43:707. Quantification by absorbance measurement at 254 nm. The limit of detection and limit of quantitation for paracetamol was 100 and 191 ng/spot and 40 and 76 ng/spot for caffeine. Recovery was in the range of 99.6 - 106.8 % and the repeatability of the method was RSD < 1.9 %.
J. Chinese Trad. Patent Med. 30 (12), 1781-1785 (2008). TLC of Shenyi granule extracts on silica gel with 1) dichloromethane - ethyl acetate - petroleum ether (60-90 ºC) - methanol 20:14:6:1; 2) ethyl acetate - formic acid - glacial acetic acid - water 30:3:4:3; 3) toluene - ethyl acetate - formic acid 8:6:1; 4) chloroform - methanol - water 26:10:3. Detection 1) by spraying with 10 % sulfuric acid in ethanol and heating; 2) by spraying with iron(III) chloride solution; 3) by spraying with vanillin reagent. Identification by comparison with the standards glycyrrhizic acid and glycyrrhetinic acid.
Ind. J. Pharma Sci. 70(6), 798-800 (2008). HPTLC of plumbagin in Drosera burmannii Vahl on silica gel with toluene - glacial acetic acid 55:1 (for alcoholic extracts) and toluene - chloroform - glacial acetic acid 10:10:1 (for aqueous extracts) with chamber saturation for 60 min. Evaluation in visible light at 425 nm. The alcoholic extract showed seven components, the main zone with hRf value of 56 corresponded to plumbagin. The aqueous extract showed two zones but no plumbagin.