J. Liq. Chromatogr. & Relat. Technol. 30, 1749-1762 (2007). HPTLC of omeprazole (5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole) and domperidone (5-chloro-1-[1-[3-(2,3-dihydro-2-oxo-1H-benzimidazol-1-yl)propyl]-4-piperidinyl]-1,3-dihydro-2H-benzimidazol-2-one) on silica gel with ethyl acetate - methanol - benzene 2:1:2. Quantitative determination by absorbance measurement at 295 nm.

J. Chromatogr. A 1155 (1), 112-123 (2007). Presentation of a novel strategy for the fractionation of complex peptide mixtures using two-dimensional planar electrochromatography/thin-layer chromatography (2D PEC/TLC). It was found that phosphopeptides migrate more slowly in the first dimension, based upon their anionic phosphate residues, and certain predominantly acidic phosphopeptides even migrate in the opposite direction, relative to the bulk of the peptides. Further distinguishing phosphopeptides based upon hydrophilicity in the second dimension, which permits a restricted region of the plate to be directly interrogated for the presence of phosphopeptides by MS. Discussion of peptide sequencing and identification of phosphopeptide from the plates by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF)-MS and tandem MS.

J. Pharm. Biomed Anal. 45(2), 337-340 (2007). HPTLC of oleanolic acid and ursolic acid on silica gel impregnated with 1 % iodine solution in chloroform after sample application. Development with petroleum ether - ethyl acetate – acetone 82:18:1. Detection by spraying with a solution of 10 % sulfuric acid in ethanol followed by heating at 120 °C for 3 min. Quantification by densitometry in absorbance mode at 530 nm.

J. Planar Chromatogr. 20, 419-421 (2007). HPTLC of tricyclazole, thiram, and folpat on silica gel prewashed with methanol, with hexane - acetone 3:2 in an unsaturated twin-trough chamber. Densitometric evaluation at 235 nm. The limit of detection was 12, 30, and 40 ng/zone, for tricyclazole, thiram, and folpat respectively.

J. Planar Chromatogr. 20, 39-42 (2007). Displacement TLC of quaternary pyridinium aldoximes (e. g. pralidoxime and obidoxime) on silica gel impregnated with paraffin oil by continous development with 10 % paraffin oil in n-hexane for 18 h with water - acetone - hydrochloric acid 8:1:1. Detection under UV light at 254 nm.

J. Planar Chromatogr. 20, 457-461 (2007). HPTLC of rivastigmine ((-)-S-N-ethyl-3-[(1-dimethylamino)ethyl]-N-methylphenylcarbamate) and impurity on silica gel with chloroform - methanol 2:3 in a twin-trough chamber with chamber saturation for 30 min. Densitometric analysis was performed in absorbance mode at 210 nm. Limits of detection were 30 and 100 ng/zone, respectively.

59th Indian Pharmaceutical Congress C-43, 234, (2007). HPTLC of Z-guggulsterone (a steroidal ketone present in oily resin of Commiphora mukul) and five marketed ayurvedic tablet formulations containing guggul, on silica gel with toluene - propane-1-ol - glacial acetic acid 8:1:1. Densitometry at 254 nm. The hRf of E-guggulsterone was 55. Several marketed formulations were evaluated for Z-guggulsterone, the UV spectra of the standard and that of the formulations were comparable in respect of Z-guggulsterone.The method was found suitable for evaluation of Z-guggulsterone in presence of other phytochemicals present in formulations.

Indian J. Pharm. Sci. 69 (4), 578 (2007). TLC of tinosporaside in defatted methanolic extracts of Tinospora Cordifolia stem bark on silica gel with toluene - acetone -water 5:15:1. Quantitative evaluation by densitometry at 220 nm. The method was found to be linear in the range of 0.5-8 mg. Recovery was 99.3%. The stem bark of the plant contained 0.4 % of tinosporaside.