J. AOAC Int. 79, 628-635 (1996). TLC of allantoin in pharmaceuticals on silica with e.g. methanol - acetone - formic acid - water 40:2:1:6 and in urine on cellulose with butanol - acetic acid - water 2:1:1. Detection with pDMAB (Ehrlich's reagent). Quantification by densitometry at 445 nm. TLC as fast and inexpensive semiquantitative method for estimation of allantoin in natural samples.

J. Liq. Chromatogr. Relat. Technol. 29, 2045-2057 (2006). TLC of substituted trans-piperidinones comprising 15 amidolactames and 7 aminolactames on silica gel with 13 mobile phase systems with LSChrom software. The procedure takes into account the adsorption properties of the mobile phase (parameter epsilon), stationary phase, and sample structure expressed by the relevant group.

J. AOAC Int. 93, 1180-1191 (2010). TLC of tropisetron and its acid-induced degradation products on silica gel with methanol - glacial acetic acid 22:3 with chamber saturation for 45 min. Detection under UV light at 254 nm. Quantitative determination by scanning at 285 nm. The hRf values were 44, 84, and 92 for tropisetron and degradates I and II, respectively. Linearity was between 1 and 10 µg/zone. Mean accuracy was 100.2 %. The precision was 0.64 %.The limit of detection and quantification for tropisetron was 0.26 and 0.80 µg/zone, respectively. The intraday and interday precisions were evaluated by assaying freshly prepared samples of tropisetron in triplicate concentrations, i. e. 3, 5, and and 9 µg/zone, resulting in 99.8 %, 100.3 %, and 100.4 %, respectively, for interday precision and 99.7 %, 100.2 %, and 99.7 %, respectively, for intraday precision (with a precision of 0.9 %, 0.6 %, 0.8 % and 0.6 %, 0.4 %, 0.6 %, respectively).

(Hungarian). (Electrochemical studies on benzimidazole derivatives. I. Anodic oxidation of 2-amino-benzimidazole.) TLC of 2-amino-benzimidazole on silica with chloroform - CCl4 - methanol 8:5:1.

Chromatographia 37, 98-104 (1993). RP TLC of title compounds on RP-18 silica with aqueous NH3 (pH 11.19-11.69) - methanol 25:75. Determination of Rf values and calculation of k values. Study of the retention behavior of the compounds as a function of the pH values. Investigation of the effect of composition of the aqueous phase, the molecular structure of the aqueous phase, and the type of organic modifier on the relationship between the retention constant (log k) and the pH of the aqueous phase.

J. Chromatogr. 429, 123-153 (1988). A section of the review on TLC of porphyrins with 9 references emphasizing its advantages.

J. Planar Chromatogr. 15, 383-386 (2002). TLC of 7 meso-tetraphenylporphyrin derivatives on silica gel, alumina, cellulose, polyamide and silica gel with Cu and chiral reagent with several single- or two-component mobile phases. Detection of spots visually.

J. Planar Chromatogr. 18, 465-470 (2005). HPTLC of cholic, glycocholic, glycodeoxycholic, chenodeoxycholic, deoxycholic, lithocholic, and glycolithocholic acid on RP-18 W, RP-2, and cyano phases in a presaturated chamber with mixtures of an organic modifier (methanol, dioxane, acetonitrile, acetone) and water in different volume proportions which were varied in steps of 5 % from 35 to 80 %. Detection by spraying with a 10 % aqueous solution of sulfuric acid or by dipping in a 10 % solution of phosphomolybdic acid in ethanol and heating at 120 °C for 20 min. Investigation of relationships between lipophilicity obtained by use of RP-HPTLC, experimental and theoretical partition coefficients, and selected structural descriptors.