Chinese J. Hosp. Pharm. (Zhongguo Yiyuan Yaoxue Zazhi) 11, 490-492 (1991). TLC of tetrandrine on silica with chloroform - methanol 100:15 and traces of NH3. Quantification by densitometry.

Asian J. Chem. 19(7), 5634-5638 (2007). TLC of rabeprazole sodium and itopride hydrochloride on silica gel prewashed with methanol, with toluene - chloroform - methanol - 25 % ammonia 5:6:2. Quantitative determination by absorbance measurement at 225 nm. Linearity was between 120 and 280 µg/mL for rabeprazole sodium and 900 and 1900 µg/mL for itopride hydrochloride. The recovery (by standard addition method) was between 98.1 and 99.5 % for both drugs. The proposed method is precise and accurate and can be used for routine analysis of rabeprazole sodium and itopride hydrochloride in capsule formulation.

Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 13, 233-236 (1993). TLC on silica with butanol - methanol - water 20:5:1. Detection under UV 254 nm. Quantification by densitometry at 273. Detection limit 0.2 ng/spot.

Ind. J. Pharm. Sci. 70(3), 386-390 (2008). HPTLC for the simultaneous estimation of ondansetron combinations in solid dosage form with omeprazole and rabeprazole, on silica gel with dichloromethane - methanol 9:1. Quantitative determination by absorbance measurement at 309 nm for combinations of ondansetron with omeprazole and at 294 nm for ondansetron with rabeprazole. The hRf value of ondansetron and omeprazole was 42 and 54, respectively, while for ondansetron and rabeprazole hRF values were 41 and 51 respectively. Linearity was between 100 and 500 ng/spot for three drugs. The method can be employed for routine quality control of such formulation.

Analyst 119, (1994). TLC screening of theobromine (TB), theophylline (TP), caffeine on silica with ethyl acetate - methanol - NH3 17:2:1. Detection under UV 254 nm, and by spraying with Dragendorff- iodine reagent. Quantification by HPLC.

Asian J. Chem. 19(7), 5647-5651 (2007). HPTLC of levofloxacin hemihydrate and ornidazole on silica gel with n-butanol - water - acetic acid 3:1:1. Quantitative determination by absorbance measurement at 366 nm. The method was linear in the range of 1050-1400 µg/mL and 2600-2900 µg/mL for levofloxacin and ornidazole respectively. The recovery was between 97.3 and 98.0 % for both drugs. The method was suitable for simultaneous estimation of both drugs in combined tablet dosage form.

Determination of isoniazid in serum by thin-layer chromatography.) (Chinese). J. Pharm. Anal. (Yaowu Fenxi Zazhi) 17, 116-118 (1997). TLC on silica with chloroform - methanol 9:1. In situ spectra recording of isoniazid and its salicylaldehyde - and benzaldehyde-derivatives. Quantification by densitometry at 225 nm. Validation of the method by investigation of linearity and range, RSD, recovery and detection limits for the compounds.

Correlation of lipophilicity with affinity for alpha-adrenoceptors. J. Planar Chromatogr. 22, 141-144 (2009). Determination of the relative lipophilicity of 14 1-substituted pyrrolidin-2-one by TLC on RP-18 with mixtures of acetonitrile and pH 7.0 Tris buffer with volume fractions of acetonitrile between 20 and 80 %, with chamber saturation for 2 h. Detection under UV light. Retention data obtained by this method were exponentially dependent on acetonitrile concentration and enabled estimation of the relative lipophilicity corresponding to pH 7.0 Tris buffer as mobile phase.