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:
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J. Liq. Chromatogr. Relat. Technol. 33, 179-190 (2010). TLC of salicylic acid and its derivatives, namely acetylsalicylic acid, salicylanilide, salicylaldehyde, salicylamide, salicylhydroxamic acid, methyl salicylate, phenyl salicylate, 3,5-dinitrosalicylic acid, 2,5-dihydroxysalicylic acid, 3-aminosalicylic acid, 4-aminosalicylic acid, and 5-aminosalicylic acid, on RP8, RP18 and HPTLC on RP18 and cyano phase with methanol - water; the content of methanol in mobile phase was gradually varied by 5 % from 20-100 %. Development in a chamber saturated for 15 min. Quantitative determination by scanning densitometry in absorption mode at the respective absorption maximum. The hRf values were recalculated on the RM values. The chromatograms were repeated in triplicate and mean hRf values were calculated. The results indicate that the chromatographic parameter of lipophilicity determined on RP8 and cyano phase may be used as a measure of lipophilicity of the investigated salicylic acid and its derivatives.
J. Serb. Chem. Soc. 74(6), 677-688 (2009). An NP-TLC method has been reported to study the lipophilicity of 5 ACE inhibitors (lisinopril, quinapril, fosinopril, enalapril, cilazapril and their metabolites). TLC on silica gel with several non-aqueous mono and binary solvent systems. Binary mobile phases demonstrated a decrease in hRf values of all 5 ACE inhibitors, i.e. increased retention with increased amounts of the less polar component in the mobile phase. Metabolites usually exhibited stronger retention, i.e. lower hRf values than the corresponding ACE inhibitor. This is probably due to a different interaction with silica gel because of two carboxylic groups in the structure of the metabolites, whereas ACE inhibitors contain only one carboxyclic group. Results obtained on NP-TLC were compared with those by RP-TLC and no significant difference was found regarding lipophilicity.
J. AOAC Int. 93, 1836-1843 (2010). HPTLC of 1) lamivudine-zidovudine on silica gel with ethyl acetate - toluene - methanol 12:5:3, quantitative determination by absorbance measurement at 289 nm; of 2) metronidazole with ethyl acetate - ammonia 50:1, quantitative determination by absorbance measurement at 313 nm; of 3) neviparine with ethyl acetate - toluene 3:1, quantitative determination by absorbance measurement at 289 nm; and of 4) quinine with ethyl acetate - toluene - acetone 22:3:5, quantitative determination by absorbance measurement at 327 nm in a twin-trough chamber lined with wetted filter paper and saturated for 20 min. The average repeatability (within-laboratory) was 1.9 %, with 73 % less than 2 % and 97 % at 2.6 % or less. The average reproducibility (among-laboratory) was 2.7 %. Mean hRf values for lamivudine, metronidazole, neviparine, quinine, and zidovudine were 19, 28, 34, 33, 57.
J. AOAC Int. 93, 778-782 (2010). TLC of mirtazapine and mianserine in tablets on silica gel with n-hexane - isopropanol - 25 % ammonia 70:25:59. Quantitative determination by absorbance measurement at 280 nm. Calibration curves were linear (r2 > 0.9970) with respect to peak area in the concentration range of 500-2500 and 500-5000 ng/zone for mirtazepin anf mianserine, respectively. The LOD was 20 and 35 ng/zone for mirtazepin and mianserine, respectively. LOQ was 50 and 85 ng/zone for mirtazepin and mianserine, respectively. The instrumental precision (%RSD; n = 6) was 0.3 and 0.2 %, the repeatability of standards (%RSD; n = 6) was 0.4 and 0.5 % for mirtazepin and mianserine, respectively. The recovery values were found to be 101.2 % for mirtazepin and 99.8 % for mianserine.
J. Planar Chromatogr. 24, 428-434 (2011). HPTLC of 6-benzyl-, 6-methyl-, and 6-propyl-2-thiouracil and spiked urine samples on silica gel with methanol in a horizontal chamber saturated for 15 min at ambient temperature. Detection by spraying with a freshly prepared mixture of 4 % sodium azide and 1 % starch solution adjusted to pH 5.5, followed by exposure to iodine vapor for 5 s. Quantitative evaluation by use of an office scanner at 300 dpi resolution. The images were inverted and stored in the form of 24-bit-true color images, which were analysed by TLSee software. The determination range was 7-16 pmol/zone, 80-160 nmol/mL urine, or 133-266 nmol/mL serum. The recovery was between 93-106 %. The LOQ was 4 pmol/zone for the studied thiouracils in three investigated matrices.
J. Planar Chromatogr. 25, 338-343 (2012). HPTLC of fluvoxamine in the presence of degradation products on silica gel with ethyl acetate - toluene - methanol - ammonia 14:4:2:1. Quantitative determination by absorbance measurement at 254 nm. The hRf of fluvoxamine was 63. Linearity was in the range of 100-1000 ng/zone. Limits of detection and quantification were 10 and 100 ng/zone. The intermediate/inter-day/intra-day precision was below 0.9 % (n=6). Recovery was between 96.9 and 100.1 %.
J. Liq. Chromatogr. Relat. Technol. 36, 1323-1329 (2013). HPTLC of amlodipine (1) and perindopril (2) in bulk powder and tablets on silica gel with n-butanol - water - glacial acetic acid 4:5:1. Quantitative determination by absorbance measurement at 365 nm and 215 nm, for (1) and (2), respectively. The hRf values for (1) and (2) were 72 and 48, respectively. Linearity was 1-6 µg/mL for (1) and 2-10 µg/mL for (2). LOD and LOQ were 0.28 and 0.86 µg/mL for (1) and 0.24 and 0.75 µg/mL for (2), respectively. The interday and intra-day precisions were below 1.3 % (n=3). Recovery (by standard addition) was 98.0-99.6 % for both (1) and (2). Comparable results were obtained when compared with validated HPLC and first-derivative spectrophotometry methods, resulting in short scan time, large sample capacity, and use of minimal volume of solvent.
J. Liq. Chromatogr. Relat. Technol. 37, 367-378 (2014). TLC of curcumin (1), piperine (2), and boswellic acid (3) in polyherbal transdermal patch on silica gel aluminum foils with chlorofom - ethyl acetate - formic acid 75:60:2. Quantitative determination by absorbance measurement at 540 nm. The hRf values for (1) to (3) were 48, 52 and 61, respectively. The linear calibration range was selected at very high amounts (1-15 µg/zone for (1) to (3)) despite the low LOD and LOQ of 0.06 and 0.2 ng/zone for (1), 0.31 and 0.95 ng/zone for (2) and 14.22 and 43.10 ng/zone for (3). Average recovery (by standard addition) was in the range of 98-99 % for (1) to (3). Intermediate intra- and inter-day precision was below 0.1 % (n=6).