J. Planar Chromatogr. 22, 83-88 (2009). TLC of isoniazid, pyrazinamide, ethambutol, and aminosalicylic acid on RP-18 in a horizontal chamber at 20 °C with acetonitrile - water 3:7. The mobile phase was modified by adding copper(II) chloride to the mixture at a constant concentration of 0.05 M. Detection under UV light at 254 nm. Quantitative determination by absorbance measurement in the range 200 - 700 nm with a TLC scanner equipped with a diode-array detector.

J. Chromatogr. B 713, 91-109 (1998). A review with 127 references on the determination of drugs by using various techniques including TLC.

J. Planar Chromatogr. 22, 175-181 (2009). TLC of 14 tetraoxanes on silica gel with ethyl acetate - toluene and ethyl acetate - petroleum ether, on cyano phase with methanol - water and acetone - water, and on RP-18 with water - organic modifier (methanol, acetone, or dioxane) in various combinations, with chamber saturation for 15 min at ambient temperature (22 +/- 2 °C). Detection by spraying with 50 % sulfuric acid, followed by heating until spots became visible.

Chromatographia 50 (1/8), 428-432 (2000). TLC on silica gel with acetone - toluene 1:1. Quantitation by densitometry at 254 nm. Comparison with previous methods, stressing on TLC's merits like the use of dexamethasone as a marker for cortisol localization on TLC sheets, the use of buffer instead of organic solvents to recover cortisol form silica gel and the rapidity of the competitive protein-binding assay (1 - 2 h).

Ind. J. Pharma. Sci. 8(4), 198-201(2009). HPTLC of nebivolol hydrochloride and valsartan on silica gel with ethyl acetate - methanol - acetic acid 12:2:1 in a twin trough chamber saturated for 15 min. Quantitative determination by absorbance measurement at 240 nm for valsartan and 280 nm for nebivolol hydrochloride. The method was found to be linear in the range of 600-1400 ng/band for valsartan 1200-2800 ng/band for nebivolol. The sample were subjected to different stress conditions (acid, alkali, oxidation, photolysis, thermal) and all degradation products were well separated from the main compounds.

(Substanzidentifikation in der Dioden-Array Dünnschichtchromatographie). GIT Fachz. Lab. 658-660, (2003). HPTLC of codeine, tramadol, flupirtine and lidocaine on silica gel with ethyl acetate - methanol - NH3 17:2:1. Quantitation by densitometry between 198 and 610 nm. The UV spectra of the separated substances are used for the identification.

Abstract No. F-269, 61st IPC (2009). HPTLC of hydrochlorothiazide and irbesartan on silica gel with acetonitrile - chloroform 5:6. The hRf value was 27 and 45 for irbesartan and hydrochlorothiazide, respectively. Quantitative determination by absorbance measurement at 270 nm. The sample was exposed to different stress conditions (acid, alkali, oxidative, photodegradation, thermal). Neither of the compounds showed degradation under thermal and photodegradation conditions, but both compounds showed significant degradation under acid, alkali and hydrolytic conditions. Degraded products were well resolved from the parent compounds.

Abstract No. F-274, 61st IPC (2009). HPTLC of ondansetron HCl on silica gel with chloroform - ethyl acetate - methanol - 25 % ammonia 90:50:40:1. The hRf value was 52. Quantitative determination by absorbance measurement at 254 nm. The method was linear in the range of 100-1400 ng/band. Recovery was 99.3 %.