J. Planar Chromatogr. 22, 367-369 (2009). HPTLC of triterpenoids (alpha- and beta-amyrin, oleanolic acid) on silica gel prewashed with methanol and dichloromethane, with dichloromethane - ethyl acetate 37:3. in a horizontal chamber saturated for 15 min. Detection by spraying with 8 % sulfuric acid in ethanol and heating at 105 °C for 3 min. Evaluation in daylight and under UV 366 nm. Quantitative determination by absorbance measurement at 520 nm.

Rapid Commun. Mass Spectrom. 24, 1032-1038 (2010) HPTLC of glycosphingolipids (GSLs) on silica gel with chloroform - methanol - water 120:70:17. The plate was overlaid with GSL-specific bacteria, and the microbes were detected with primary antibodies and appropriate alkaline phosphatase labeled secondary antibodies, and by in situ MS analysis of bacteria-specific GSL receptors. The thin-layer chromatography infrared matrix-assisted laser desorption/ionization orthogonal time-of-flight mass spectrometry (TLC/IR-MALDI-o-TOF-MS) method represents one of the most powerful approaches for the detection of GSL receptors of microorganisms.

Rapid Commun. Mass Spectrom. 24, 1305-1311 (2010). HPTLC of salvinorin A (1), salvinorin C (2), divinatorin B (3), and salvinorin B (4) in the leaves of Salvia divinorium on silica gel with methyl tert-butyl ether – hexane 3:1 as mobile phase. Detection by desorption electrospray ionization multi-stage tandem mass spectrometry (TLC/DESI-MS). The hRf were 49, 64, 85, and 95 for compounds (1) - (4), respectively. The use of a simple HPTLC protocol in combination with DESI-MS allowed for improved detection of different species of salvinorin in the leaf extracts.

J. Ethnopharmacol. 124, 450-456 (2010). HPTLC fingerprinting of Eclipta alba on silica gel with chloroform - ethanol - water 35:10:2. Densitometric evaluation at 254 nm. Major compounds identified were coumestants and wedelolactone, with hair growth promoting activity.

J. Planar Chromatogr. 23, 137-140 (2010). HPTLC of aspirin, salicylic acid, and sulfosalicylic acid on silica gel (prewashed with methanol-chloroform 1:1 and impregnated with 2 % boric acid in ethanol) with chloroform - methanol - ammonia - water 120:75:2:6 in a chamber previously saturated at 25 °C for 30 min. Detection and quantitative determination by densitometry at 254 nm. The hRf of aspirin, salicylic acid, and sulfosalicylic acid were 81, 61, and 24, respectively. The linear range was 100-1000 ng/band for all three compounds, and the correlation coefficients r were 0.97, 0.94, and 0.95, respectively. LOQ were 123, 95, and 61 ng/band, respectively, and the respective LOD were 37, 37, and 18 ng/band.

International Seminar on Herbal Drug Research, PN-017 (2009). HPTLC of thiocolchicoside and diclofenac sodium on silica gel with toluene - acetone - methanol - formic acid 500:200:200:1. Quantitative determination by absorbance measurement at 280 nm. The method was linear in the range of 160-800 ng/band (thiocolchicoside) and 1000-5000 ng/band (diclofenac sodium). The recovery was in the range of 99.2-100.9 for both compounds.

Encyclopedia of Chromatography Third Edition 1, 950-953 (2009). The author describes the standard guides of the ASTM designations for forensic writing ink comparison and identification using TLC. Recent advances such as software for visual comparison of chromatograms are included. In addition, new applications of TLC in the field of forensic ink analysis and comparison with spectrometric and chromatographic methods are also described.

International Journal of PharmaTech Research 03, 527-538 (2009). A stability indicating HPTLC method has been developed for analysis of cephalexin in bulk and dosage formulation. HPTLC on silica gel with ethyl acetate - methanol - 25 % ammonia 6:4:1. The hRf value was 56. Densitometric quantification at 260 nm. The method was linear in range of 500-1500 ng/band. Cephalexin was subjected to forced degradation (acid, alkali, oxidation, thermal, photolytic). All degradation products were well separated from the drug, indicating specificity of the method.