J. Chromatogr. A 1560, 97-103 (2018). Proposal of a simple and convenient on-spot derivatization approach for the modification of hydroxyl-containing compounds for their analysis by TLC/MALDI. Post-chromatographic acylation of separated analytes with 3-bromopropionyl chloride with simultaneous quaternization of pyridine, resulted in derivatives with permanent positive charges, which, in contrast to the initial alcohols not ionizable under TLC/MALDI conditions, reveal intense peaks of their cationic moieties in MALDI mass spectra recorded directly from TLC plates. Demonstration of the method by applying to a series of mammalian and plant sterols, phenols and terpene alcohols.

Chromatographia 17, 261-263 (1983). A comparison of hydrophobic properties of isomeric ethylphenols and phenylenediamines. TLC of o-, m- and p-ethylphenol with benzene - acetone 8:2 and of phenylenediamines with butanol - acetic acid - water 4:1:5 (on silica). Detection by spraying with 0.005 % fuchsine solution.

Quantitative HPTLC of silybin - a comparison to quantitative HPLC. GIT Suppl. Chromatographie 3, 4-11 (1987). With the aid of an optimized HPTLC procedure silybin was quantitatively determined after extraction with methanol in the drug cardui mariae, besides Silydianin, Silydristin and Taxifolin. The extraction procedure was simplified and optimized with a view to systematic errors. The statistical comparison of the results with those established by HPLC, shows the equivalence of both analytical methods. Under the aspect of the expenditures (time, personnel, appliances) as well as total operating costs HPTLC turnes to be a most appropriate method for this routine analysis.

J. Chromatogr. 509, 255-262 (1990). TLC of 9 chlorophenol derivatives on paraffin oil-impregnated silica with methanol – water in different proportions. Detection under UV and with anthrone reagent. Study of the interaction of some chlorophenols with two hydroxypropyl-ß-cyclodextrin derivatives. Elucidation of the role of various chloro substitutions in the complex formations.

Chromatogr. Sci. 55, 757-806 (1991). A review with 224 references on TLC of phenols, aromatic carboxylic acids and indoles, including both natural and technical phenolic compounds.

Biochemical Systematics and Ecology 21, 613-616 (1993). TLC of flavonoids and phenolic acids on silica or microcrystalline cellulose. Visualization under UV 365 nm and by spraying with aminoethyl ester of diphenylboric acid 1% in methanol (Neu´s reagent).

J. Liquid Chromatogr. 18, 1405-1427 (1995). Presentation of a method for the computer assisted selection of the mode of TLC development for the separation of ten phenolic components, based on simulation of isocratic and gradient development. Investigation of the different combinations of isocratic and gradient development in one and two dimensions. Evaluation of the quality of the chromatograms by application of criteria such as the distance function and multipeak criterion.

J. Shanghai Univ. Med. (Shanghai Yike Daxue Xuebao) 25 (2), 121 (1998). TLC on silica gel with dichloromethane - methanol - acetic acid 90:10:3. Detection by exposure to iodine vapor. Identification by standard comparison.