J. Planar Chromatogr. 19, 383-385 (2006). HPTLC of apigenin on silica gel, pre-washed with methanol, in a saturated twin-trough chamber with toluene - methanol 5:1. Densitometric evaluation at 343 nm.

Acta Chrom. 11, 233-237 (2001). Conditions for separation of racemic mixtures of fatty acids by use of a mobile phase containing a chiral compound as additive and on a chiral stationary phase. TLC separation of the enantiomers of DL-alpha-hydroxypalmitic acid on silica gel with acetone – hexane – hydrochloric acid 3:5:2 containing 1 % L-alanine, detection by dipping in 2 % aqueous sodium hydroxide solution. TLC of the enantiomers of DL-12-hydroxystearic acid on silica gel F254 with hexane – acetonitrile – acetic acid – hydrochloric acid 5:2:1:2 containing 2 % L-alanine, detection by dipping in 2 % aqueous sodium hydroxide solution. Separation of the enantiomers of DL-12-hydroxyoleic acid on chiral plate with acetone – water 3:2, detection by treatment with iodine vapor. Isomers were characterized by calculation of their optical topological indexes.

J. Liq. Chromatogr. Relat. Technol. 28, 1383-1392 (2005). TLC of cholic acid, glycocholic acid, glycolithocholic acid, deoxycholic acid, chenodeoxycholic acid, glycodeoxycholic acid, and lithocholic acid on cyano and diol phase with n-hexane - ethyl acetate - acetic acid in different volume compositions, at 18 °C. Detection by dipping in 10 % ethanolic phosphomolybdic acid solution followed by heating at 120 °C for 15 min. Almost all bile acids were completely separated on cyano phase with n-hexane - ethyl acetate - acetic acid 49:49:2; whereas the optimal separation for all examined bile acids was obtained on diol phase with n-hexane - ethyl acetate - acetic acid 21:21:8.

Pharmazie 61, 483-485 (2006). Preparative and analytical TLC of talatisamine, 14-O-acetyltalatisamine, senbusine C, and condelphine on silica gel with toluene - ethyl acetate - diethylamine 9:2:1, and 7:2:1; and chloroform - methanol - ammonia 5:3:1, detection under UV light.

Pharmazie 60, 13-17 (2005). TLC of 3-benzyl-5-(4-fluoro-benzylidene)-1-methyl-2-thioxo-imidazolidin-4-ones, 5-benzylidene-3-(4-nitro-benzyl)-2-thioxo-imidazolidin-4-ones, and 4-acridin-9-ylmethylene-1-benzyl-5-thioxo-imidazolidin-2-ones (e. g. 5-(4-fluoro-benzylidene)-1-methyl-2-thioxo-imidazolidin-4-one, 3-benzyl-5-(4-fluoro-benzyidene)-1-methyl-2-thioxo-imidazolidin-4-one) on silica gel with chloroform - methanol 96:4; 99:1; and 98:2; n-hexane - ethyl acetate 7:3; 6:4; and 5:5; and benzene - ethyl acetate 7:3. Detection under UV light.

J. Liq. Chromatogr. Relat. Technol. 28, 2489-2491 (2005). 2-D TLC of 4 ecdysteroids and several flavonoids on cyano phase with toluene - acetone - ethanol - 25 % ammonia 100:140:32:9 and ethyl acetate - ethanol - water 16:2:1. Detection under UV 254 nm, and under white light and UV 366 nm after spraying with vanillin-sulfuric acid reagent followed by heating. TLC of L-deprenyl and 14C-L-deprenyl((-)-N-methyl-N-propynyl(2-phenyl-1-methyl)ethylammonium hydrochloride) on silica gel with chloroform - methanol - water 7:5:1, and dichloromethane - triethanolamine 19:1 for elution and displacement, that is for the first and second dimensional developments, respectively.

Pharmazie 60, 110-114 (2005). TLC of two glyceride derivatives of mefenamic acid (“3a and 3b“) on silica gel with hexane - ethyl acetate 5:1. Detection by exposure to iodine vapors.

J. Planar Chromatogr. 20, 43-48 (2007). Two dimensional TLC of flavonoids (with quercetin 3-rhamnoside, quercetin 3-glucoside, quercetin 3-rutinoside, catechin, and gallic acid as markers) on cellulose with n-butanol - acetic acid - water 6:4:1 in the first direction and 15 % acetic acid in the second direction; TLC of phenolic acids on cellulose with toluene - methanol - acetic acid - acetonitrile 16:2:1:1 in the first direction and sodium formate - formic acid - water 10:1:200 in the second direction. Flavanols were separated on silica gel with chloroform - methanol - water 13:7:2 in the first direction and ethyl acetate - formic acid - acetic acid - water 75:3:2:20 in the second direction. Chromatograms were developed in a horizontal chamber after saturation for 10 min. Detection after drying by UV light at 254 and 366 nm. Detection also by spraying with 5 % aluminium chloride in methanol for flavonoids, with aqueous 5 % iron(III) chloride for gallic acid,1 % diazosulfanilamide in acetone and 1 % vanillin in hydrochloric acid for flavanols. After spraying with vanillin solution plates were heated at 110 °C for 5 min and viewed in white light and, after 30 min, under UV light at 366 nm. Also TLC of flavonoids (astragalin, quercetin 3-galloylglucoside, rutin, hyperoside, quercitrin, kaempferol 3-rhamnoside on silica gel with ethyl acetate - methanol - formic acid - acetic acid - water 80:10:1:1:8. For an identity test natural product reagent, 0.5% diphenylborinic acid 2-aminoethylester in ethyl acetate, was used. After develoment the plates were heated at 100 °C for 3 min and immediately immersed in the NP reagent, then viewed under UV light at 366 nm and in white light.