Indian Drugs 31 (7), 333-338 (1994). Comparative evaluation of bio-assay and HPTLC fingerprints to establish shelf-life and uniformity of a herbal product. HPTLC of PHF extracts on silica, pre-washed with methanol, with benzene - butanol - methanol 95:5:2. Quantification by densitometry in fluorescence at 366/>400 nm.

Arzneim.-Forsch./Drug Res. 48, 408-414 (1998). TLC of 153Sm-Ca/Na-EDTMP (ethylenediamine tetramethylene phosphonic acid) on cellulose with NH3 25% - methanol - water 1:10:20. Detection by autoradiography.

J. Planar Chromatogr. 16, 381-385 (2003). TLC of (-)-deprenyl and metabolites (formaldehyde as dimedone adduct) on silica gel with chloroform - methanol - NH3 100:10:1 and chloroform - methanol - water 7:5:1 in the first and second dimension, respectively. Also TLC of dimedone on silica gel with 5% triethanolamine in chloroform. Visualization under UV 254 nm. Detection of radiolabeled compounds by digital autoradiography (DAR) or on X-ray film after contact autoradiography. Two-dimensional separations have improved the evaluation.

59th Indian Pharmaceutical Congress C-17, 228 (2007). HPTLC of curcumin, charantin, and swetiamarin in polyherbal formulations on silica gel with benzene - methanol 4:1 for charantin, chloroform - methanol - formic acid 74:4:1 for curcumin, and ethyl acetate - methanol - water 77:15:5 for swetiamarin. Densitometry at 536 nm for charantin, 425 nm for curcumin, and 238 nm for swetiamarin. The hRf values were 33, 89, and 54 for charantin, curcumin, and swertiamarin respectively.

60th Indian Pharmaceutical Congress PA-82, (2008). HPTLC of wedelolactone in supercritical fluid extrats of Eclipta alba Hassk. on silica gel with toluene - ethyl acetate - formic acid 50:50:1. Densitometric evaluation at 240 nm. The method is linear in the range of 100-1000 ng/spot. The method was used for estimation of wedelolactone in the raw material obtain from different regions of the country (India).

J. Chromatogr. Sci. 48 (1), 45-48 (2010). HPTLC of ambroxol hydrochloride on silica gel with methanol - triethylamine 2:3. The hRf value of ambroxol was 53. Quantification by absorbance measurement at 254 nm. Linearity was given in the range of 100-1000 ng/spot with r2 = 0.9966 (via peak area). The limits of detection and quantitation were 10 and 30 ng/spot, respectively. Ambroxol hydrochloride was susceptible to degradation under oxidation and thermal stress conditions. The method is suitable for purity testing of the drug as it detects the related impurities.

J. Tech. & Sci. of Ningxia Agr. & Forest, 5, 38-39 (2010). For liquorice TLC on silica gel with ethyl acetate - glacial acetic acid - formic acid - water 15:1:1:2, detection by spraying with 10 % sulfuric acid in ethanol and heating at 105 ºC. For Rhizoma zingiberis TLC on silica gel with cyclohexane - diethyl ether 1:1, detection by spraying with 10% vanillin in sulfuric acid and heating at 105 ºC, followed by evaluation in daylight.

Abstracts, 42nd Middle Atlantic Regional Meeting of the American Chemical Society, College Park MD, USA, May 21-24 (2011). The four TLC methods for acetaminophen, acetylsalicylic acid, ibuprofen, and chlorpheniramine maleate contained in the Compendium of methods developed by A.S. Kenyon and T.P. Layloff at the US FDA for use in countries with limited resources were transferred to quantitative HPTLC. The used sample preparation methods provide suitable calibration curves covering the range of 70-130 % of the label value of the products. Quantitative determination by absorbance measurement at 254 nm.