J. Planar Chromatogr. 18, 443-449 (2005). TLC of six 2-[1-(4-alkylpiperazinyl)]benzothiazoles, two 2-[4-(1-alkyl)piperidinyl]benzothiazoles, three 2-(N,N’-dimethyl-1,2-ethanediamino)benzothiazoles, and 2-[1-(4-aminopiperidinyl)]benzothiazole on RP-18 in a saturated horizontal chamber with mixtures of acetone and aqueous Tris (tris(hydroxymethyl)-aminomethane) buffer (pH 7.4). The organic modifier (acetone) content varied from 40 to 85 % in 5 % increments. Detection under UV.

J. AOAC Int. 88, 1530-1535 (2005). HPTLC of ciprofloxacin and degradation products (an ethylenediamine compound, a desfluoro compound, a by-compound, and fluoroquinolonic acid) on silica gel with chloroform - methanol - 25 % ammonia 43:43:14. Quantitative determination by densitometric analysis at 330 nm for fluoroquinolonic acid and at 277 nm for the other compounds. The method showed high sensitivity (limit of detection 10 to 44 ng), a wide linearity range (3 to 20 µg/mL), and good precision (2.32 to 6.46 % relative standard deviation) and accuracy (recovery rates 98.6 to 101.5 %) for individual constituents.

Abstract G-5, IPC (2005). HPTLC of telmisartan and hydrochlorothiazide on silica gel with chloroform - methanol - toluene 2:5:5 with chamber saturation for 30 min. Detection by spraying with ninhydrin reagent. Quantitative determination by absorbance measurement at 272 nm. The linearity was in the range of 250-500 ng/spot for telmisartan and 200-700 ng/spot for hydrochlorothiazide, recovery was 99-101 %. Accuracy, precision and linearity of the method were established.

Indian Drugs 42 (11), 731-734 (2005). Hydro-distilled volatile tea-tree oil of Melaleuca alternifolia was investigated by GC-MS, HPTLC, and X-Ray fluorescence. HPTLC on silica gel with toluene - ethyl acetate 93:7. Detection by spraying with anisaldehyde sulphuric acid reagent. Nine well-distinguished peaks were obtained.

CBS 96, 14-15 (2006). TLC of glibenclamide as adulterant in antidiabetic herbal drugs, on silica gel with toluene - ethyl formate - formic acid 5:4:1 in a saturated twin trough chamber over 150 mm. Detection under UV 365 nm, quantification of the image with VideoScan software. Rf of glibenclamide is 0.58. Results were compared with those obtained by UV spectrophotometry and HPLC and showed good correlation.

Indian Drugs 42 (9), 600-603 (2005). HPTLC of cinnarizine and domperidone in tablets, on silica gel with toluene - ethyl acetate - methanol 14:1:5. Quantitative determination by absorbance measurement at 271 nm. Rf values of cinnarizine was 0.85 and of domperidone 0.4. Linearity was observed in the range of 0.1-0.4 for cinnarizine and 0.075-0.3 µg/µL for domperidone. The recoveries were in the range of 98.95-100.25 %. The tablet matrix did not interfere with the assay.

J. Planar Chromatogr. 19, 422-426 (2006). TLC of 26 substituted anilides of pyrazine-2-carboxylic acids on silica gel impregnated with a solution of silicone oil in diethyl ether 19:1 for 16 h. The aqueous component of the mobile phases was 0.05 M phosphate buffer of pH 7.4 or 3.0; methanol was used as organic modifier; separation in a pre-saturated chamber. Detection under UV light at 254 nm. .

Indian Drugs 44 (2), 111-116 (2007). HPTLC for simultaneous determination of mosapride citrate and pantoprazole from pharmaceutical formulations by using loratadine as an internal standard. HPTLC on silica gel with toluene - acetone - methanol 16:4:1. Quantitative determination by absorbance measurement at 254 nm. Mosapride citrate response was linear over the range 0.075 - 0.225 µg/mL, and that for pantoprazole was 0.2 - 0.6 µg/mL. Recovery was 99.6 - 101.3 % for both compounds. The developed method was validated regarding accuracy, precision, and stability, and can be used for routine quality control of formulations containing mosapride citrate and pantoprazole.