CBS 94, 5-7 (2005). HPTLC of synthesis reaction products on silica gel with pentane - tert. butyl methyl ether 3:1 with chamber saturation. Detection by spraying with phosphomolybdic acid reagent (0.4g in 100 mL ethanol), followed by drying in hot air. Identification by online hyphenation with mass spectrometry. For online extraction with the ChromeXtract device the substance zones are eluted with methanol - chloroform 1:1 (flow rate 0.1mL/min). The outlet capillary is connected directly to the electrospray mass spectrometer (ESI-MS). Measurement in 2 s cycles in a mass range from m/z 100-600.

J. Planar Chromatogr. 17, 468-476 (2004). HPTLC of nine s-triazines on RP-18 and cyano phases with aqueous solutions of different organic modifiers (acetone, acetonitrile, tetrahydrofuran, and dioxane). After development the dried plates were examined under UV light at 254 nm. OPLC on RP-8 and RP-18 with water - acetonitrile. The plates were preconditioned in acetonitrile before development.

IPC 56th 2004, Abstract No. G-5. HPTLC of conessine in Holarrhena antidysentrica, an important ayurvedic drug, on silica gel with toluene - ethyl acetate - diethyl amine 13:5:2. Detection by spraying with Dragendroff’s reagent. Quantitative determination by densitometric scanning at 520 nm. Different market samples of the drug were found to contain 0.30 - 1.46 % of conessine with recovery of 95.18 - 102.70 %

IPC 56th 2004, Abstract No. GP-15. Stability indicating HPTLC determination of ondansetron in solid oral dosage forms on silica gel with chloroform - methanol 4:1. Quantitative determination by scanning at 310 nm. The Rf value was 0.62 - 0.64, linearity was 40 - 120 ng. The average recovery was 100.01 %. The method was found suitable for routine analysis of formulations containing ondansetron.

J. Planar Chromatogr. 18, 23-27 (2005). HPTLC-AMD of fructo-oligosaccharides and inulin mixtures (sucrose, 1-kestose, nystose, and fructosylnystose) on diol phases at 55-65 % relative humidity in a twin-trough chamber with an acetonitrile - acetone - water polarity gradient. Detection by derivatization with 4-aminobenzoic acid reagent and quantitation by scanning at 366 nm.

J. Planar Chromatogr. 18, 455-459 (2005). HPTLC of erythromycin, troleandomycin (oleandomycin triacetate), tylosin, rifamycin B, and rifampicin on silica gel and on RP-18 in a presaturated chamber with wide-ranging mixtures containing 0 to 100 % esters or ketones in dimethyl sulfoxide or hexamethyldisiloxane. Detection by spraying with a mixture of concentrated sulfuric acid and methanol 1:4 followed by heating at 120 °C for 10 min. Chromatographic retention data and a possible retention mechanism are discussed.

J. Planar Chromatogr. 18, 377-379 (2005). HPTLC of 2-azaanthraquinone from plant extracts on silica gel with toluene - ethyl acetate - methanol 40:9:1. Quantitative determination by absorbance measurement at 310 nm. Calibration was linear in the range of 10-100 µg/mL. The method was repeatable and precise with RSD between 0.98 and 1.59 % intra-day and between 3.41 and 5.56 % inter-day. Limits of detection and quantification were 3 and 6 µg/mL.

Abstract G-19, IPC (2005). HPTLC for estimation of corticosterone in rat plasma on silica gel with chloroform - methanol - water 9:10:1. Quantitative determination by absorbance measurement at 245 nm. Betamethasone was employed as internal standard. The extraction of plasma with ethyl acetate gave an average recovery of >85 %. The linearity was within the range of 30-300 ng/mL with LOQ being 30 ng. The method was found to be rugged and robust.