J.A.O.A.C. 71, 855-856 (1988). TLC of indican and allantoin on cellulose with n-butanol - methanol - water 2:2:1. Spraying with p-dimethyl-aminocinnamaldehyde (23.5 mg/mL ethanol - HCl 1:3). Inspection under UV. Detection limits 125 ng for allantoin and 13 µg for indican.

J. Planar Chromatogr. 7, 202-210 (1994). TLC of twenty nine congeneric alkanolamines, mainly derivatives of ethanolamine and diethanolamine, on RP-18 with methanol - water 9:1 or acetonitrile - water 9:1. Comparison of the capacity factors with data, taken from the literature obtained by paper chromatography on cellulose, using three different mobile phase systems.

Biochemical Systematics and Ecology 28, 1019-1021, (2000). TLC of amide on silica gel with hexane - acetone 2:1. Detection with phosphomolybdic acid reagent.

E-Journal of Chemistry 6(1), 295-302 (2009). HPTLC of rofecoxib and tizanidine on silica gel (plates pre-washed with methanol and dried at 110 °C) with toluene - ethyl acetate - methanol - triethyl amine 60:30:5:1 with chamber saturation for 15 min. The hRf value of tizanidine was 49 and of rofecoxib 68. Rosiglitazone was used as internal standard. Densitometric evaluation at 235 nm. The method was linear in the range of 3.75-11.35 µg/band for rofecoxib and 0.30-0.70 µg/band for tizanidine. The recovery was 99.6-101.0 %.

J. AOAC Int. 93, 820-824 (2010). HPTLC of mexiletine hydrochloride on RP-18 with tetrahydrofuran - citrate buffer (pH 4.45) 3:7 and on amino phase with chloroform - tetrahydrofuran - hexane - ethylamine 30:20:50:1. Quantitative determination by absorbance measurement at 217 nm. Linearity was between 0.5 and 8.0 µg/spot. The accuracy was 99.6 % for the amino phase and 99.5 % for the RP-18 phase. The %RSD of intra-day and inter-day precision was 1.2 and 2.7 %, respectively; for both layers LOD and LOQ were 100 and 300 ng/zone, respectively.

Americ. Lab. 17, (3) 131-133 (1985). TLC of aspartame on silica with butanol - acetic acid - water 6:2:2. Detection by spraying with 0.2 % ninhydrin in acetone. Quantification by densitometry. Visual detection limit 50 ng and lower; limit of determination150 ng (instrument dependent.). Comparison with other methods.

Analyst 115, 263-267 (1990). Evaluation of diazonium reagent Fast Black K salt for visualization of amines and phenols on silica plates. Differentiation between aliphatic primary and secondary amines by color. Determination of the structures of colored reaction products. Detection limit 0.05 – 0.5 µg for various chromatographed drug substances.

A comparative study. J. Chromatogr. 635, 165-170 (1993). Two-dimensional TLC maps of dansyl chloride-, dabsyl chloride- and 7-chloro-4-nitrobenzoxazole - derivatised amines on silica with 9 solvent systems. Evaluation of some factors which influence sensitivity. Recommendation of dansyl chloride as the reagent for chromatographic analysis of complex mixtures of biogenic amines.