J. Chromatogr. 672, 203-211 (1994). Test of the ability of the molecular connectivity model to predict Rf values in TLC for a group of sulfamides using multi-variable regression equations with multiple correlation coefficients, standard error of estimate, F-Snedecor function values and Student's t-test as criteria of fit. Prediction of the values for this property in different silica and different polar mobile phases by using the molecular connectivity model. Discussion of the relationship between structural features of sulfamides and the Rf values in TLC.

J. of Chromatogr. A 1248, 169-177 (2012). Purified oligomers of hyalobiuronic acid are indispensable tools to elucidate the physiological and pathophysiological role of hyaluronan degradation by various hyaluronidase isoenzymes. Establishment and validation of a novel sensitive, convenient, rapid, and cost-effective HPTLC method for the qualitative and quantitative analysis of small saturated hyaluronan oligosaccharides consisting of 2–4 hyalobiuronic acid moieties. HPTLC on amino phase with 1-butanol - formic acid - water 3:5:2 or 3:4:1. Detection 1) by spraying with orcinol in various concentrations of sulfuric acid; 2) by dipping into the reagent of orcinol in 10 % sulfuric acid and Morgan–Elson reagent; 3) by illuminating with white light and UV 366 nm after heating. The simple reagent-free in situ derivatization of 3) resulted in a detection limit of 7–19 pmol/band and LOQ of 37–71 pmol/band depending on the analyzed saturated oligosaccharide. Identification of the analytes by TLC-ESI-MS. The validated HPTLC method, as an alternative to sequential techniques such as HPLC and CE, can easily be automated and is applicable to the analysis of multiple samples in parallel.

Acta Chimica 113, 393-402 (1983). TLC of 2-acetamido-2-deoxy-D-galactose-N, N'-diphenylformazan; 2-acetamido-2-deoxy-D-glucose-N,N'-diphenyl-formazan; 2-acetamido-2-deoxy-D-mannose-N,N'-diphenyl-formazan; 2-acetamido-3,4,5,6-tetra-O-acetyl-2-deoxy D-mannose-N,N'-diphenyl-formazan on silica with a) ethyl acetate - ethanol - water 7:2:1, b) ethyl acetate - 1,4-dioxane- acetic acid 50:50:0.3, c) ether.

Jap. Hygienic Chem. (Eisei Kagaku) 36, 28-35 (1990). Investigation of the analysis of quaternary ammonium compounds by TLC combined with curie-point pyrolyzer and GC/MS. Detection limit 0.01-10 ng

J. Planar Chromatogr. 8, 366 - 368 (1995). Study of the retention behavior of a series of para-substituted anilides on silica with nonaqueous mobile phases. The results were discussed in terms of the nature of the solute and the eluent. - TLC of N-substituted amides, N-substituted benzamides, and N-substituted a-phenylacetamides on silica with 8 different mobile phases; spots were observed under UV 254 nm.

J. Planar Chromatogr. 20, 57-60 (2007). TLC of 5-methylcytosine, tryptamine, melatonin, tryptophan, indole-3-acetic acid, and indole on silica gel with 1-butanol - glacial acetic acid - water 12:3:5 and isopropanol - 25 % ammonia - water 8:1:1. Densitometry at 280 nm.

Int. J. Pharma. Sci. 2(1), 390-394 (2010). TLC of salbutamol sulphate (SS), ambroxol hydrochloride (AH), and theophylline (THE) in a ternary fixed dose formulation on hand made silica gel plates with methanol – n-hexane 21:9. The hRf values were 25 for SS, 72 for THE and 89 for AH. Detection under UV 254 nm and by exposure to iodine vapors. The bands of the respective compounds were scraped off and quantified by spectrophotometry.

J. Planar Chromatogr. 26, 496-501 (2013). HPTLC of amitriptyline in gastric lavage on silica gel with methanol – ammonia (25%) 197:3. Quantitative determination by absorbance measurement at 209 nm. The hRf value of amitriptyline was 49. Linearity was between 10 and 250 ng/zone. LOD and LOQ were 5 and 17 ng/zone. Recovery (by standard addition) was in the range of 83-92 %. Intermediate intra- and inter-day precision was below 2 %.