J. Chromatogr. B 700, 1-8 (1997). Purification of the title compounds by two-step argentation TLC on silica gel impregnated with 5% silver nitrate in acetonitrile, developed with petroleum ether - ether - acetic acid 80:30:1. Detection with 0.01% primuline in acetone - water 4:1 and under UV. TLC of the purified fatty acid methyl esters with petroleum ether - ether - acetic acid 70:20:2. Detection by spraying with 0.2% 2,7-dichlorofluorescein in ethanol and under UV. Characterization by GC and GC-MS after elution.

Chinese J. Chromatogr. (Sepu) 18 (4), 367-369 (2000). TLC on silica gel with chloroform - methanol - acetic acid -water 80:10:8:1. Detection by spraying with 10% phosphomolybdic acid an ethanol and heating at 105°C for 10 min. Quantitation by densitometry at 530 nm.

J. Planar Chromatogr. 15, 59-66 (2002). RPTLC of methyl laureate, methyl myristate, methyl palmitate, methyl isostearate, methyl stearate, and methyl arachidate on kieselguhr impregnated with different amounts of paraffin oil, using two different mobile phases. The RM values of these compounds for all the stationary phases and mobile phases investigated could be correlated with the dipole moments of the mobile phases, with the percentage impregnation of the stationary phase, and with numerical values of one topological index from among those based on the distance matrix or on the adjacency matrix. TLC of methyl laureate, myristate, palmitate, isostearate, stearate, and arachidate on kieselguhr impregnated with 10% or 15% of paraffin oil in hexane with methanol - water 9:1 and ethanol - water 9:1. Visualization with bromothymol blue or with an aqueous 0.005% solution of new fuchsin.

J. Planar Chromatogr. 16, 369-373 (2003). TLC of rosmarinic acid and valerenic acid on amino-modified silica gel with 8 binary phases (methanol - water, ethanol - water, propanol - water, acetonitrile - water, THF - water, acetonitrile - buffer, and methanol - buffer), in which the concentration of organic modifier varied from 0 to 100%, with chamber saturation at 20°C. Visualization by spraying with sulfuric acid conc. - methanol 1:10 and heating for 10 min at 120°C. Visualization under UV.

J. Planar Chromatogr. 17, 143-146 (2004). TLC of oleic, elaidic, palmitic, stearic, ricinoleic acid, methyl ricinoleate, alpha-hydroxypalmitic acid, methyl alpha-hydroxypalmitate, 12-hydroxystearic acid, methyl 12-hydroxystearate, 9,10-dihydroxystearic acid, methyl 9,10-dihydroxystearate on RP-18 with methanol - water 19:1 and 9:1. Detection with iodine vapor.

60th Indian Pharmaceutical Congress PG-256 (2008). HPTLC of rosmarinic acid in Salvia officinalis on silica gel with toluene - ethyl acetate - formic acid 5:4:1. Quantitative determination by absorbance measurement at 328 nm. Linearity was 0.1-1.0 ng/mL, recovery was 99.4 %. The method was found suitable for routine quality control of the Salvia officinalis raw material.

Research Journal of Pharmaceutical, Biological and Chemical Sciences 1(2), 226-234 (2010). TLC on silica gel with toluene - isopropanol - 25 % ammonia 23:23:4. The hRf value was 30. Densitometric evaluation at 258 nm. The linearity range was 100-350 ng/band. For stability studies diacerein was subjected to different stress conditions (acid, alcohol, oxidative, thermal, photolytic). Degradation products were well resolved from the main zone of diacerein with significantly different hRf values.

Eurasian J. Anal. Chem 5(1), 95-103 (2010). An HPTLC method is reported for quantification of glycyrrhetinic acid and apigenin in Glycyrrhiza glabra. Methanolic and acidic-methanolic extracts are subjected to chromatographic separation on silica gel with ethyl acetate - ethanol - water - 25 % ammonia 63:20:4:1. The method was linear in the range of 160-960 ng/band for glycyrrhetinic acid and 32-96 ng/band for apigenin. Glycyrrhiza glabra was found to contain 0.65 % of glycyrrhetinic acid and 0.0004 % of apigenin.