J. Chinese Pharm. Standard 10 (4), 284-286 (2009). TLC of Naolibao pill extracts on silica with n-hexane - ethyl acetate 5:1. Qualitative identification by detection under UV 254 nm and 365 nm. The method is simple, rapid, reliable, and suitable for the quality control of the TCM formulation.

Abstract No. F-260, 61st IPC (2009). HPTLC of cefixime and cloxacillin on silica gel, prewashed with methanol, with n-butanol - methanol - water - formic acid 80:60:40:3. The hRf values were 28 and 45 for cefixime and cloxacillin, respectively. Quantitative determination by absorbance measurement at 293 nm for cefixime and 343 nm for cloxacillin. The linearity range was 150-600 ng/band for both compounds.

Abstract No. F-258, 61st IPC (2009). HPTLC of olmesartan medoximal and amlodipine besylate on silica gel with chloroform - methanol - toluene - acetic acid 80:10:1:1. Quantitative determination by absorbance measurement at 254 nm. The linearity range was 800-5000 ng/band for olmesartan and 200-1400 ng/band for amlodipine. Recovery was in the range of 98-102 % for both drugs.

Abstract No. F-311, 61st IPC (2009). HPTLC of levocetirizine dihydrochloride and montelukast sodium on silica gel with chloroform - methanol 93:7. The hRf value was 21 and 65 for levocetrizine and montelukast, respectively. Quantitative determination by absorbance measurement at 345 nm. The method was linear in the range of 100-350 ng/band for levocetrizine and 600-1100 ng/band for montelukast.

Abstract No. 9324, IHCB (2009). HPTLC of hesperidin in orange peel extract and formulation on silica gel with ethyl acetate - methanol - water 100:17:13. Quantitative determination by absorbance measurement at 287 nm. The method was linear in the range of 10-1000 ng/spot. Hesperidin was subjected to degradation studies (acid, alkali, hydrolysis, oxidation, and thermal stress) and was found susceptible to different stress condition. The method was suitable for determination of hesperidin and its degradation products in bulk drug as well as formulations.

Ind. J. Pharma. Sci. 71(1), 72-74 (2009). HPTLC of valsartan and hydrochlorothiazide on silica gel with chloroform - methanol - toluene - acetic acid 60:20:10:1. Quantitative determination by absorbance measurement at 260 nm. The calibration curve was linear between 300 to 800 ng/spot for valsartan and 100 to 600 ng/spot for hydrochlorothiazide. The limit of detection and the limit of quantification for valsartan were 100 and 300 ng/spot, respectively, and for hydrochlorothiazide 30 and 100 ng/spot, respectively.

J. Planar Chromatogr. 22, 273-276 (2009). HPTLC of bicalutamide and leflunomide (as internal standard) on silica gel with toluene - ethyl acetate 4:5 in a twin trough chamber saturated for 30 min at room temperature. Quantitative determination by absorbance measurement at 273 nm. The limit of detection and quantification was 50 and 200 ng/band, respectively.

Talanta 78 (3), 874-884 (2009). Presentation of a sensitive, selective and precise stability-indicating method for the determination of clopidogrel bisulfate in presence of its alkaline degradate and in pharmaceutical formulations. TLC on silica gel with hexane – methanol - ethyl acetate 87:10:3. Quantification by densitometry at 248 nm in the range of 0.6–3 µg/band. Recovery was 99.9 %. Clopidogrel could be determined in the presence of up to 90 % of its alkaline degradate. Method selectivity was evaluated using laboratory prepared mixtures. The analysis of clopidogrel in pharmaceutical dosage forms is possible without interference from additives.