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
- Keyword register: select an initial character and browse associated keywords
- Search by CBS edition: Select a CBS edition and find all related publications
Registered users can create a tailor made PDF of selected articles throughout CCBS search – simply use the cart icon on the right hand of each abstract to create your individual selection of abstracts. You can export your saved items to PDF by clicking the download icon.
Indian J. Pharm. Sci. 69(4), 589 (2007). HPTLC of ropinirole on silica gel with methanol - acetone 4:1. Aripiprazole was used as internal standard. Under chromatographic conditions both ropinirole and aripiprazole were well separated. Evaluation under UV 254 nm. UV spectrometry was carried out at 250 nm.
Chromatographia 68 (1-2), 151-153 (2008). Anisaldehyde and crotonaldehyde reagent are suitable as spray reagents for the detection of major components of sesame oil unsaponifiables. Derivatization with anisaldehyde reagent lead to chromatograms with coloured zones characteristic for lignans and sterols in Sesamum indicum. By derivatization with crotonaldehyde four of the eleven unsaponifiable matters could be detected as more stable and brightl coloured zones. The results obtained could serve as a guide in the monitoring of oil’s stability, adulteration and contaminations.
J. Chromatogr. Sci. 46 (1), 4-9 (2008). Presentation of a simple and accurate stability-indicating method for the quantitative determination of ribavirin in its bulk and capsule forms by TLC on silica gel aluminium layer with chloroform – methanol – acetic acid 4:1:1. Detection by spraying with anisaldehyde reagent. Ribavirin is found to undergo degradation under all stress conditions, and the degradation products are well resolved from the pure drug with significantly different Rf values. Linearity was between 5 and 40 µg/spot (r = 0.9980). The limit of detection and of quantification was 1 and 5 µg/spot, respectively. Application of the proposed TLC method for the determination of ribavirin in pure form and in capsules, with good accuracy and precision. The results obtained by the proposed TLC method are comparable with those obtained by the official method.
Phytochem. Anal. 19, 236-243 (2008). HPTLC of curcumin (1), demethoxycurcumin (2), and bisdemethoxycurcumin (3) in the rhizome of Curcuma longa L. on silica gel with toluene - acetic acid 4:1 for curcuminoid separation and n-hexane - ethyl acetate - acetic acid 16:5:1 for quantification of total curcuminoid content. Quantitative determination by absorbance measurement at 254 nm. To determine the free radical-scavenging activity of individual compunds, the plate was dipped into a 0.5 mM solution of 1,1-diphenyl-2-picrylhydrazyl (DPPH radical) in methanol for 5 s, dried in darkness at room temperature and heated at 60 °C for 30 s. Quantitative determination by absorbance measurement at 517 nm as negative peaks. The hRf values were 50, and 25 for (1) and (3), respectively. Linearity was between 80 and 250 ng/spot for (1), 40 and 280 ng/spot for (2), and 85 and 270 ng/spot for (3). The limits of detection and quantification were 20 and 60 ng/spot for (1), 10 and 30 ng/spot for (2), and 25 and 75 ng/spot for (3). Recoveries were 99.0 %, 96.9 %, and 95.8 %, (reference value 80 %), respectively. The intermediate/interday/intra-day precision for (1), (2), and (3) was 3.15 %, 3.00 %, and 2.85 %, (n=6), respectively. For the free radical-scavenging activity, linearity was between 70 and 400 ng for (1), 50 and 550 ng for (2), and 60 and 250 ng for (3). The limits of detection and quantification were 40 and 70 ng for (1), 25 and 50 ng for (2), and 45 and 60 ng for (3). The intermediate/interday/intra-day precision for (1), (2), and (3) was 6.50 %, 2.30 %, and 1.50 % (n=6), respectively.
J. Planar Chromatogr. 21, 43-47 (2008). TLC and polarimetry was used to investigate the tendency of L-alanine to undergo oscillatory in-vitro chiral inversion when dissolved in neutral, acidic, and basic solvents. The influences of temperature and sample mixing were investigated as well. It was confirmed that L-alanine undergoes chiral inversion. TLC of L-alanine on silica gel, prewashed with methanol - water 9:1, and impregnated twice with aqueous copper sulfate solution and L-proline in water - methanol 9:1. Development with 2-propanol - acetonitrile - water 6:2:3 at 22 °C. Detection by dipping in freshly prepared 0.2 % methanolic ninhydrin solution, followed by heating at 100-110 °C for 10 min. Quantitation by densitometry at 540 nm.
Part II. Nicotinic acid and its esters. J. Liq. Chromatogr. Relat. Technol. 30, 2419-2433 (2007). TLC and HPTLC of nicotinic acid and methyl nicotinate, ethyl nicotinate, isopropyl nicotinate, butyl nicotinate, and benzyl nicotinate on RP-18 (prewashed with methanol) with methanol - water and dioxane - water in 10 % volume ratio steps from 100:0 to 0:100 in a chamber saturated for 30 min. TLC on aluminium oxide (prewashed with methanol) with acetone - n-hexane 1:4 provided the optimum conditions for complete separation. Quantitative determination by absorbance measurement at 254 nm.
J. AOAC Int. 91, 1186-1190 (2008). TLC of N-(hydroxymethyl)nicotinamide on silica gel with chloroform - ethanol 2:3. Quantitative determination by absorbance measurement at 260 nm.
J. AOAC Int. 91, 1331-1338 (2008). HPTLC of ciprofloxacin (1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(piperazin-1-yl)quinoline-3-carboxylic acid hydrochloride) and degradation products (7-[(2-aminoethyl)amino]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid and 7-amino-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid) on silica gel with chloroform - methanol - 25 % ammonia 43:43:14. Detection with 0.3 % methanolic ninhydrin solution and dimethylaminobenzaldehyde and quantitative determination by absorbance measurement at 277 nm.