J. Liq. Chromatogr. Relat. Technol. 29, 1891-1903 (2006). HPTLC of androsterone, epi-androsterone, dehydro-epi-androsterone, testosterone, stigmasterol, beta-sitosterol, estradiol, hydrocortisone, and cholesterol on RP-18 W with methanol - water, and acetonitrile - water in different composition, with chamber saturation. Detection by spraying with sulfuric acid - methanol 1:9 and heating at 120 °C for 15 min. Densitometric determination of RF values. The aim of the work was to compare the lipophilicity of selected steroids determined by RP-HPTLC on RP-18 W plates using different mobile phases with lipophilicity values estimated by computational methods.

Pharmazie 60, 269-272 (2005). TLC of (E)-3-[(4-chlorphenyl)imino]-N-isopropyl-3H-1,2,4-triazol-5-amin on silica gel with heptane - tetrahydrofuran -methanol - water 30:20:2:1. Evaluation under white light.

J. Liq. Chromatogr. & Relat. Technol. 30, 1845-1854 (2007). TLC of three types of azaphenothiazines (10H- and 10-alkyldipyrido-1,4-thiazines, 6H- and 6-alkyldiquino-1,4-thiazines and 14H- and 14-alkyldiquino-1,4-thiazines) on RP-18 with acetone (concentration ranged from 50 to 85 % in 5 % increments) and aqueous Tris buffer pH 7.4, with chamber saturation. Detection under UV 254 nm.

Chromatographia 66 (3-4), 295-296 (2007). HPLC of nitroguanidine and guanidine nitrate on silica gel layers with dioxane – tetrahydrofuran 1:1. Detection under UV 210 nm for guanidine nitrate and 265 nm for nitroguanidine. Quantification by absorbance densitometry using peak area calibration. The method was used for separation and quantification of the compounds for online and off-line quality control of synthesis.

59th Indian Pharmaceutical congress F-152, 426, (2007). HPTLC of rosiglitazone on silica gel aluminum layer with chloroform - ethyl acetate - ammonia 70:30:1. The hRf value of rosiglitazone was 40. Densitometric analysis in absorbance mode at 230 nm. Linearity was between 100 and 1000 ng/zone. Recovery (by standard addition method) was 99.6 %. Limit of detection and quantification was 10 ng and 50 ng/zone, respectively.

Indian J. Pharm. Sci. 69(4), 594 (2007). HPTLC of nebivolol HCl in tablet dosage form, on silica gel with ethyl acetate - toluene - methanol - ammonia 10:60:20:1. Quantitative evaluation by densitometry at 280 nm. The hRf value was 33. Linearity was in the range of 100 - 600 ng/mL. Limit of detection and quantification was 30 and 100 ng/zone, respectively. The method was compared with an RP-HPLC method in respect of different analytical parameters. The RP-HPLC and the HPTLC method were found comparable, but the HPTLC method was more sensitive.

J. Planar Chromatogr. 20, 75-80 (2007). TLC of amisulpride, clozapine, olanzapine, quetiapine, risperidone, and ziprasidone on RP-18, RP-8, amino phase, cyano phase and DIOL phase in horizontal chambers with mixtures of phosphate buffer and six modifiers (acetone, acetonitrile, dioxane, ethanol, methanol, and tetrahydrofuran). Best separation on RP-8 with dioxane - phosphate buffer pH 3.51 2:3. Detection under UV light at 254 nm and evaluation by videodensitometry.

Biochem. Biophys. Res. Commun. 365, 118-123 (2008). TLC of prenyl alcohols (farnesol and geranylgeraniol) after enzymatic hydrolysis of trans-isoprenyl diphosphates on RP-18 with acetone - water 9:1. Detection with iodine vapour. Quantitative determination by measuring the absolute radioactivity of the spots.