Acta Chrom. 13, 161-171 (2003). Lysine and threonine were separated and quantitatively determined from the mixture of amino acids present in a commercially available drug. TLC of alpha-amino acids on layers prepared from a 1:4 stannic arsenate – cellulose mixture with a variety of mobile phases. Best separation was achieved with n-butanol – formic acid – water 7:2:1; or isopropanol – acetic acid – water 8:1:1, or isopropanol – formic acid – water 7:2:1. Detection by dipping in 1 % ninhydrin in butanol after heating at 60 °C . Quantitative determination by spectrophotometry with hydrindantin–methyl cellosolve reagent.

Phytochem. Analysis 17, 409-413 (2006). HPTLC of gymnemic acid as of gymnemagenin from callus cultures of Gymnema sylvestre on silica gel with chloroform – methanol 4:1. Quantitative determination by absorbance measurement at 205 nm. Linearity of determination of gymnemagenin is between 2 and 10 µg and its average percentage recovery from leave callus extracts is 98.6 - 99.2 %.

J. Planar Chromatogr. 19, 319-323 (2006). HPTLC of itopride hydrochloride on silica gel with methanol - ethyl acetate - toluene - triethylamine 2:5:12:1.Quantitative determination by absorbance measurement at 230 nm. The method was validated for accuracy and precision.

J. Liq. Chromatogr. Relat. Technol. 29, 219-227 (2006). HPTLC of selected sarsasapogenins (shataverin-IV and immunoside) on silica gel with ethyl acetate - methanol - water 75:13:5:10. Detection by spraying with ceric ammonium sulfate followed by heating at 100 °C for 5 min. Quantitation by scanning at 450 nm.

J. Liq. Chromatogr. & Relat. Technol. 30, 489-498 (2007). TLC of fenbendazole (methyl [5-(phenylthio)-1H-benzimidazole-2-yl]-carbamic acid methyl ester) on silica gel using dichloromethane - ethyl acetate - formic acid - methanol 60:5:3:3. Quantitative determination by absorbance measurement at 293 nm. Linearity (peak area) is given between 500 and 1400 ng/spot.

J. Liq. Chromatogr. & Relat. Technol. 30, 1697-1704 (2007). TLC of capsaicinoids from chili peppers with e. g. capsaicin, dihydrocapsaicin, coumaric acid, vanillin, ferulic acid, and cinnamic acid as standards, on silica gel by two fold development with cyclohexane - chloroform - acetic acid 7:2:1; chloroform - methanol - acetic acid 95:1:5; and cyclohexane - acetone 4:5. Visualization under UV light at 254 nm. Quantitation by densitometry at 254 nm.

J. Chromatogr. A 1046 (2), 251-257 (2007). Fluorescence scanning densitometry of various analytes on HPTLC silica gel plates impregnated with a solution of coralyne cation, based on the increase or decrease, that the corresponding analyte induces on native coralyne emission at a given excitation wavelength. Compared to a procedure previously described for berberine cation, and Reichardt's dye probes, the sensitivity of coralyne in HPTLC detection of non-fluorescent, structurally different analytes (e.g. long-chain alkanes, alcohols, alkylbromides, neutral lipids) is superior.

Thin Layer Chromatographic and densitometric analysis. J. Planar Chromatogr. 20, 209-215 (2007). TLC of phospholipids (with cardiolipin, phosphatidyl ethanolamine plasmologen and phosphatidyl cholin plasmologen as standards) on silica gel, prewashed with chloroform - methanol 2:1 and acetone, using one-dimensional TLC with 1-propanol - chloroform - ethyl acetate - methanol - water 50:50:50:21:18 and two-dimensional TLC with 1-propanol - chloroform - ethyl acetate - methanol - water 50:50:50:21:18 in the first direction and hexane - diethyl ether 1:1 in the second direction after hydrolysis with 1 % hydrochloric acid to reveal alkenylphospholipids. Detection by staining with thionine reagent resp. with leucofuchsin reagent. Densitometric scanning at 600 nm (for thionine) and at 560 nm (for leucofuchsin).