J. Planar Chromatogr. 29, 474-476 (2016). HPTLC of methamphetamine in Ya-Ba tablets on silica gel with methanol ‒ ammonium 200:3. Quantitative determination by absorbance measurement at 259 nm. The hRF value was 35. Linearity was between 600 and 3000 μg/zone. The intermediate precision was 11.2 % (n=3). The LOD and LOQ were 153 and 463 μg/zone, respectively. Average recovery was 102.3 %.

Forensic Sci. Intern. 35, 141-144 (1987). TLC of brallobarbital and secobarbital on silica with chloroform - acetone 90:10, chloroform - acetone - NH3 50:50:1 and methanol - NH3 100:1.5.

J. Planar Chromatogr. 5, 458-462 (1992). TLC of the contamination of copolymers with carbohydrates, their derivatives, with furfural and maleic acids on silica with propanol - ethyl acetate - water 7:2:1; of contamination with terpenes and dioxane derivatives on aluminium oxide with benzene - hexane - ethanol 25:25:1 or on silica with cyclohexane - toluene - MEK 40:5:4. TLC of copolymers on RP-18 silica with methanol - water 5:1. Visualization with 7 different dyeing reagents. This TLC method is useful for checking the purity of the maleic anhydride copolymers either during synthesis of prior to their medical application.

J. Planar Chromatogr. 8, 157-159 (1995). TLC of title compounds on silica with concentration zone with ethyl acetate - methanol - acetic acid 8:1:1. Simultaneous detection of clenbuterol and salbutamol by placing the plate in a vessel containing a chlorination solution (CCl4 - KMnO4 3%- hydrochloric acid 12%. After drying, spraying with detection solution (o-tolidine in acetic acid + KI in water). Confirmation of clenbuterol by development with ethyl acetate - methanol - NH3 17:2:1, spraying with modified Ehrlich‘s reagent and heating at 80 °C for 5 min. Confirmation of salbutamol after development with ethyl acetate - methanol - NH3 7:12:1, drying, and spraying with a 2 % solution of 4-aminoantipyrine followed by an 8 % solution of potassium ferricyanide.

J. Planar Chromatogr. 10, 388-390 (1997). HPTLC of heroin, morphine, methaqualone, papaverine, narcotine, caffeine and paracetamol on silica with benzene - acetonitrile - methanol 8:1:1, first development to 5 cm, after drying second development with cyclohexane - toluene - diethylamine 75:15:9 to 8 cm. Visualization under UV 254 nm. New simple, sensitive and specific HPTLC procedure.

JAOAC Int. 85, 1273-1287 (2002). TLC of egg phosphatidylcholine, cholesterol and degradation products (e.g. lysophosphatidylcholine, several free fatty acids and hydroperoxides, and several undefined degradation products) on silica gel and RP-18. The best separation was obtained on RP-18 system with butanol - methanol - water - 96-98% acetic acid 10:10:5:1 after overnight saturation at 25°C. After a first development, the plate was dried and a second development was performed in the same direction. Visualization by dipping in a 1% solution of 4-methoxybenzaldehyde in 98% sulfuric acid - 96-98% acetic acid - ethanol - water 1:5:30:15. Visualization in daylight and under UV 366 nm. Also densitometry.

Br. by High-Performance Thin-Layer Chromatography. J. Planar Chromatogr. 20, 117-120 (2007). HPTLC of ursolic acid (3beta-hydroxyuro-12-enoic acid) on silica gel prewashed with methanol in a twin-trough chamber with toluene - ethyl acetate - triethylamine - methanol 7:2:1:1. After derivatization with Liebermann-Burchard reagent the chromatograms were evaluated densitometrically at 366 nm in the fluorescence mode.

59th Indian Pharmaceutical congress C-344, 308, (2007). TLC of different fractions of fruits of Azadirecta indica on silica gel with ethyl acetate - n-hexane 1:1. The MIC value was determined in comparison with gedunin isolated from the plant. The fungi were sub cultured and incubated for seven days, then sprayed on the developed plate, followed by incubation at 37°C . Zones of inhibition were measured. Antifungal activity was observed with Aspergillus niger, Fusarium specis, and Penicillium chrysogenum.