J. Liq. Chromatogr. Relat. Technol. 31, 2019-2034 (2008). TLC of captopril, delapril, enalapril, lisinopril, amd moexipril on silica gel (impregnated by continous development with 10 % paraffin oil in n-hexane for 18 h) and RP-18 with various mobile phases. Detection under UV 254 nm. TLC is a fast and economical method for the determination of lipophilicity.

J. Chromatogr. 581, 306-309 (1992). Drug monitoring of salbutamol by thin-layer chromatography. Studies of the influence of time lapse in processing of serum samples, i.e. centrifugation, extraction and chromatography. Discussion of the stability of salbutamol in the sera of patients.

J. Pharm. Res. 7(2), 126-128 (2008). HPTLC on silica gel with acetone - chloroform - ethyl acetate - methanol 6:6:6:1. Quantitative determination by absorbance measurement at 280 nm. The hRf value for telmisartan was 27 and for hydrochlorothiazide 45. The regression curve shows good linear relationship in the concentration range of 25.5 - 128.0 µg for hydrochlorothiazide and 81.6 - 408.0 µg for telmisartan. The content uniformity test was carried out as per the USP specification of the content uniformity test. The percent drug estimated from the marketed formulations were found to be in the range 99.3 and 100.5 for both drugs. The percent recoveries of drug carried out by the standard addition method was found to be 100.3 and 99.4 for hydrochlorothiazide and telmisartan respectively. The proposed method was found suitable for routine quality control and content uniformity tests.

Biomed Chromatogr. 7, 273-274 (1993). TLC of cannabinoids on silica with isooctane - ethyl acetate - acetic acid 30:10:1. Detection by spraying with Triton-X100 - chloroform - hexane 1:20:80. Quantification by densitometry at 340 nm.

60th Indian Pharmaceutical Congress PA-195, (2008). HPTLC of trandolapril on silica gel with toluene - ethyl acetate - methanol - formic acid 5:16:2:1. The hRf value of trandolapril was 51. Trandolapril was subjected to different stress conditions like acidic and alkaline hydrolysis, oxidation, dry heat, wet heat, neutral condition and photodegradation. The degradation products were well resolved from the pure drug. Quantitative determination by absorbance measurement at 220 nm. Linearity was between 300-1800 ng/spot. The method was suitable for routine analysis of the drug in bulk and pharmaceutical dosage form.

J. Chin. Trad. Med. (Zhongguo Zhongyao Zazhi) 20, 359-360 (1995). TLC on silica with ethyl acetate - acetone - petrol ether 2:1:11. Detection by spraying with 10 % sulfuric acid in ethanol and heating at 100 °C for 5 min. Quantification by densitometry at 400 nm.

J. Planar Chromatogr. 22, 183-186 (2009). HPTLC of ethyl 8-oxo-5,6,7,8-tetrahydrothiazolo[3,2-a][1,3]diazepin-3-carboxylate (HIE-124) in plasma (with diazepam as internal standard) on silica gel with chloroform - ethyl acetate 4:1 with chamber saturation for 30 min. Quantitative determination by absorbance measurement at 265 nm. The limit of detection and quantification was 20 µg/L (40 ng/band) and 40 µg/L (80 ng/band), respectively.

J. Planar Chromatogr. 11, 47-50 (1998). HPTLC of lipids (cholesterol, oleic acid, triolein, methyl oleate, cholesteryl oleate as standard) on silica gel with hexane - ether - acetic acid 40:10:1. After drying at 115°C for approx. 15 min the lipids were detected as blue spots on a yellow background by spraying with 5% ethanolic phosphomolybdic acid and heating for 15 min at 115°C. Quantitation by densitometry at 700 nm.