J. AOAC Int. 91, 1196-1202 (2008). Thermostated micro HPTLC of Spirulina maxima dyes on RP18 with acetone - n-hexane 3:7 in a homemade temperature-controlled removable horizontal micro TLC chamber at 40 °C with chamber saturation. Detection by direct digital scan under visible light conditions. Experimental data indicated that under such conditions, with an office scanner used for chromatogram digitalization, spot quantification could be accurately performed within the analyte mass range of two orders of magnitide.

J. AOAC Int. 91, 1174-1178 (2008). HPTLC of hederagenin on silica gel with toluene - ethyl acetate - formic acid 7:3:5 in a twin-trough chamber. Detection with anisaldehyde - sulfuric acid reagent by dipping for 1 s and heating for 7 min at 100 °C. Quantitative determination by absorbance measurement at 595 nm.

J. AOAC Int. 91, 1145-1148 (2008). TLC of alpha-mangostin on silica gel with dichloromethane - methanol 24:1 in a saturated twin-trough chamber. Quantitative determination by absorbance measurement at 320 nm.

60th Indian Phamaceutical Congress PA-196, (2008). HPTLC of trandolapril on silica gel with chloroform - methanol - acetic acid 16:3:1 in a saturated chamber. Quantitative determination by absorbance measurement at 210 nm. Linearity was in the range of 200-1000 ng/spot. The method was suitable for routine quality control of drug in tablet dosage form.

Anal. Chem. 80, 2744-2750 (2008). TLC of mixtures of semipolar nitrogenated compounds as well as pharmaceutical drugs (allyl phenylamine, phenylamine, ethylpyridine, propanolol hydrochloride, and amlodipine besylate) on silica gel with ethyl acetate - hexane 1:4; detection under UV 254 nm. On-spot detection and analyte characterization via easy ambient desorption and sonic-spray ionization (EASI) and (tandem) mass spectrometry detection.

Ind. J. of Pharma Sci. 70(6), 847-851 (2008). HPTLC of apigenin in segregated parts (leaves, stems, flowers and fruits) of Turnera aphrodisiaca on silica gel with toluene - ethyl acetate 1:4. Quantitative determination by absorbance measurement at 336 nm. Flowers were found to contain maximum amount of apigenin whereas leaves contained the least. Apigenin contents in methanolic extracts of aerial plant parts were fourteen times lower than in acid hydrolyzed methanolic extracts, indicating the presence of most of apigenin in glycosidic form. The plant material collected in September showed maximum contents of apigenin.

J. Planar Chromatogr. 22, 127-131 (2009). HPTLC of 6-gingerol, extracts of Suprabha and market samples of ginger on silica gel (prewashed with methanol) with n-hexane - acetone 18:7 in a twin trough chamber saturated for 4 min at 20 +/- 4 °C and 36 +/- 3 % relative humidity. Quantitative determination by absorbance measurement at 286 nm. The limit of detection and quantification was 40 and 150 ng/band, respectively.

J. Chinese Trad. Patent Med. 30 (10), 1478-1482 (2008). TLC of Fangji Guanjie pill extracts on silica gel with 1) petroleum ether (60-90 ºC) - ethyl acetate 10:1; 2) ethyl acetate - formic acid - glacial acetic acid - water 15:1:1:2; 3) petroleum ether (60-90 ºC) - ethyl acetate 17:3; 4) chloroform - methanol - water 40:10:1; 5) diethyl ether - chloroform - methanol 4:2:1. Detection 1) under UV 254 nm; 2) by spraying with 10 % sulfuric acid in ethanol; 3) by spraying with dinitrophenylhydrazine in ethanol and heating at 105 ºC; 4) by spraying with 5 % potassium iodobismuthate solution. Identification by comparison with the standards fangchinoline and tetrandrine.