J. Planar Chromatogr. 18, 164-166 (2005). TLC of non-steroidal anti-inflammatory drugs (NSAID), i.e. mefenamic acid, naproxen, ibuprofen, flurbiprofen, ketoprofen, paracetamol, and diclofenac, on silica gel with chloroform - methanol , chloroform - ethyl acetate, acetonitrile - methanol - water, acetonitril - methanol in different proportions. Detection with iodine vapor.

J. AOAC Int. 88, 1549-1554 (2005). TLC of polymyxin B, framycetin, and dexamethasone on silica gel with methanol and methanol - n-butanol - 25 % ammonia - chloroform 14:4:9:12 for framycetin and polymyxin B. Quantitative determination by densitometry at 550 nm after detection with 0.3 % ninhydrin solution. Dexamethasone was separated with cyclohexane - ethyl acetate 2:3, quantitative determination by absorbance measurement at 245 nm. Similar accuracy, relative standard deviation values from 1.49 to 2.47 % and relative error values from 0.02 to 0.81 % are comparable to those obtained with the reference methods.

J. Planar Chromatogr. 18, 460-464 (2005). HPTLC of ethamsylate and mefenamic acid on silica gel prewashed with methanol, in a pre-saturated twin-trough chamber with chloroform - methanol - acetic acid 50:40:1. After drying at 50 °C for 5 min quantitative determination by absorbance measurement at 300 nm. The validated calibration range was 500-2500 ng/spot (r = 0.998) and 500-2500 ng/spot (r = 0.997) for ethamsylate and mefenamic acid, respectively.

J. Pharm. Biomed. Anal 39, 132-138 (2005). A simple, selective, precise and stability-indicating HPTLC method of analysis of curcumin both as a bulk drug and in formulations was developed and validated. HPTLC on silica gel with chloroform-methanol 37:3. This system was found to give compact spots of curcumin (Rf 0.48). Densitometric analysis of curcumin in the absorbance mode at 430 nm. The linear regression analysis data for the calibration plots showed good linear relationship with r =0.996 and 0.994 via peak height and peak area, respectively, in the concentration range of 50-300 ng per spot. The method was validated for precision, recovery, robustness. The LOD and LOQ were 8 and 25 ng per spot, respectively. Curcumin was subjected to acid and alkali hydrolysis, oxidation and photodegradation.

Indian Drugs 42 (6), 345-352 (2005). TLC fingerprint identification of methanolic extracts of Adhatoda vasica, Lawsonia inermis and Alkanna tinctoria, on silica gel. For Lawsonia inermis and Alkanna tinctoria the developing solvent toluene - acetone - acetic acid 90:10:1 was used, and for Adhatoda vasica n-hexane - acetone - diethyl ether 3:1:1 for. Detection of alkannin by spraying with 10 % methanolic KOH.

Indian Drugs 42 (7), 424-427 (2005) HPTLC of fexofenadine HCl from tablet dosage form on silica gel with dichloromethane - methanol 13:7. Quantitative determination by absorbance measurement at 260 nm. The linear detector response was observed between 0.2 and 1.0 µg. The method was validated to determine its accuracy and precision. The LOD was found to be 0.08 ng/µL, LOQ was 0.02 ng/µL. The recovery was carried out by standard addition method and was found to be 100.82 %.

J. Sep. Sci. 26, 1359-1362 (2003). HPTLC of tramadol and chlorzoxazone (internal standard) on silica gel with ethyl acetate - methanol 7:1 and 1 drop of ammonia. Quantitative determination by absorbance measurement at 275 nm. Linearity of determination of levofloxacin is between 1.0 and 2.5 µg and its average percentage recovery is 104.6 %.

Indian Drugs 44(1), 43-47 (2007). HPTLC of beta-sitosterol in methanolic extracts of powdered Cynodon dactylon (Linn.) Pers., on silica gel with chloroform - toulene 19:1. Detection with Libermann-Burchard reagent. Quantitative determination by densitometry at 366 nm. Beta-sitosterol response was linear over the range of 40 µg/mL to 90 µg/mL. The amount of beta-sitosterol in the whole plant powder of Canodon dactylon (Linn.) Pers was found to be 0.60 mg. The validated HPTLC method can be used for routine quality control of Cynodon dactylon (Linn.) Pers. whole plant powder and quantification of beta-sitosterol.