J. Planar Chromatogr. 22, 187-189 (2009). HPTLC of tamoxifen citrate ((Z)-2-[4-(1,2-diphenylbut-1-enyl)phenoxy]ethyldimethylamine citrate) on silica gel (prewashed with methanol - chloroform 1:1) by automated multiple development (AMD 2) using single-step isocratic development with toluene - methanol - glacial acetic acid 57:38:5. Detection under UV 254 nm. Quantitative determination by absorbance measurement at 256 nm. The limit of detection and quantitation was 25 and 52 ng/band, respectively.

Separation and analysis of duloxetine hydrochloride and olanzapine in a synthetic mixture. J. Planar Chromatogr. 22, 121-126 (2009). HPTLC of duloxetine hydrochloride (and degradation products after acidic and basic hydrolysis, oxidation and photodegradation) on silica gel with toluene - methanol - 10 % ammonia 60:26:1 in a twin trough chamber saturated at 25 °C. Quantitative determination by absorbance measurement at 231 nm. The hRf value was 39. Linearity was between 60-480 ng/band. The limit of detection and quantification was 20 and 60 ng/spot, respectively. For separation of duloxetine hydrochloride and olanzapine in a synthetic mixture HPTLC with acetone - methanol - triethylamine 10:6:1. Quantitative determination by absorbance measurement at 240 nm. The hRf values were 63 and 77, respectively. Linearity was between 100-800 ng/band.

Chromatographia 65 (3-4), 239-243 (2007). TLC of solasodine in various Solanum species on silica gel with a developing solvent containing an organic acid to form ion pair complexes of solasodine with the acid dye. The resulting colored complex was quantified by absorbance measurement at 461 nm. Linearity was between 79 and 495 ng/spot with a correlation coefficient of 0.995. The method eliminates post derivatization steps and the problem of background interference. Application of the method to determine solasodine content in various herb samples, herb extract and their formulations showed an accuracy of 98.5 ± 2.8 % without matrix interference.

Abstract No. 9226, IHCB (2009). HPTLC of oleanolic acid (in extracts of Ocimum sanctum collected from different geographical sources) on silica gel with toluene - ethyl acetate - glacial acetic acid 55:45:2. Detection by spraying with Liebermann-Burchard’s reagent. Quantitative determination by absorbance measurement at 600 nm. Linearity was in the range of 1-4 µg, recovery was 100.4-102.1 %. Hydro alcoholic extracts of the plant contained high amounts of oleanolic acid, maximum contents were found in plants collected in the Kerala region.

60th Indian Pharmaceutical Congress PG-260 (2008). HPTLC of glycyrrhizic acid on silica gel with chloroform - glacial acetic acid - methanol - water 15:8:3:2. Quantitative determination by absorbance measurement at 254 nm. The hRf value of glycyrrhizic acid was 28. The method was linear in the range of 50-500 ng/spot. The sample analyzed by the proposed method contained 87.8 µg glycyrrhizic acid per tablet, equivalent to 0.015 % w/w of the tablet formulation.

J. Planar Chromatogr. 22, 445-448 (2009). HPTLC of myristicin, safrole and extract of seeds on silica gel, prewashed with methanol, with toluene in an automatic developing chamber saturated for 20 min. Quantitative determination by absorbance measurement at 210 nm for myristicin and at 290 nm for safrole.

60th Indian Pharmaceutical Congress PA-212 (2008). HPTLC of atomoxetine HCl on silica gel with acetone - methanol - triethylamine 30:15:2. Quantitative determination by absorbance measurement at 275 nm. The method was linear in the range of 300-2100 ng/spot and was suitable for routine quality control of pharmaceutical formulations.

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.