60th Indian Pharmaceutical Congress PA-221 (2008). HPTLC of terpenes in stem of Ocimum basilicum on silica gel with toluene - ethyl acetate 19:1. Evaluation of 5 spots under UV 254 nm and under visible light after treatment with anisaldehyde reagent followed by heating at 100 °C for 5 min: borneol (yellow, hRf 24), menthol (red, hRf 27), eugenol (blue, hRf 50), thymol (violet, hRf 57), safrole (blue, hRf 93).

60th Indian Pharmaceutical congress PA-235 (2008). HPTLC of strychnine and brucine (in seeds of Strychnos Nux Vomica) on silica gel with chloroform - methanol - ammonia 38:2:1. Quantitative determination by absorbance measurement at 258 nm (strychnine, hRf value 29) and 271 nm (brucine, hRf value 21). The method was linear in the range of 100-1000 ng/spot (both compounds). The method was suitable for standardization of several herbal formulations containing nux vomica as an ingredient.

J. AOAC Int. 92, 779-784 (2009). HPTLC of psoralen and plumbagin and extracts of ayurvedic polyherbal oil formulations on silica gel at 22 °C and 55 % humidity with toluene - ethyl acetate 3:1 in a twin trough chamber with chamber saturation. UV spectra were recorded from 200 to 600 nm; densitometric measurements were performed at 302 nm (for psoralen) and 275 nm (for plumbagin).

60th Indian Pharmaceutical Congress PA-224 (2008). HPTLC of aloe-emodin in extract of Rheum Emodi (prepared by supercritical fluid extraction) on silica gel with toluene - acetone - formic acid 80:20:1. Quantitative determination by absorbance measurement at 254 nm. Linearity was in the range of 100-400 ng/spot. Compared with other extraction techniques supercritical fluid extraction was more effcient and less time consuming.

Abstract No. F-240, 61st IPC (2009). HPTLC of cinitapride hydrogen tartrate on silica gel with methanol - toluene 17:3. The hRf value was 71. Quantitative determination by absorbance measurement at 265 nm. The linearity was in the range of 90-450 ng/band. The compound was subjected to different stress conditions (acid, alkali, oxidative, photodegradation, dry and wet heat) and degradation products were well separated from the main component.

Abstract No. F-238, 61st IPC (2009). HPTLC of salbutamol silphate and guaiphenesin, used as pharmaceutical syrup against cough, on silica gel with ethyl acetate - methanol - 25 % ammonia 15:3:2. The hRf value was 47 and 65 for salbutamol and guaiphenesin, respectively. Quantitative determination by absorbance measurement at 280 nm. The method was linear in the range of 200-1000 ng/band for salbutamol and 10-15 µg/band for guaiphenesin.

Abstract No. F-245, 61st IPC (2009). HPTLC of atorvastatin (AT) calcium, ramipril (RA) and aspirin (AS) on silica gel with benzene - ethyl acetate - toluene - methanol - acetic acid 40:45:10:5:1. Quantitative determination by absorbance measurement at 220 nm. The hRf values were 45, 28 and 72 for AT, RA and AS, respectively. The linearity ranges were 0.5-2.5 µg/band (r2=0.998) for AT, 0.5-2.5 µg/band (r2=0.9978) for RA and 0.75-3.75 µg/band (r2=0.9946) for AS with mean recoveries of 100.3, 99.1 and 98.9 for AT, RA and AS, respectively.

J. Planar Chromatogr. 22, 277-281 (2009). HPTLC of racecadotril (2-{2(acetylsulfanylmethyl)-3-phenylpropanoyl}amino acetic acid benzyl ester) and its degradation products in the bulk drug and in a pharmaceutical formulation on silica gel with n-hexane - ethyl acetate 7:3 in a twin trough chamber saturated for 30 min. Quantitative determination by absorbance measurement at 230 nm. The limit of detection and quantification was 50 and 100 ng/band, respectively.