J. Chinese Trad. Patent Med. (Zhongchengyao) 27 (7), 769-772 (2005). TLC of the extracts of Yixuning tablets on silica gel with 1) ethyl acetate - chloroform - formic acid 15:30:1; 2) toluene - ethyl acetate - formic acid 90:5:2; 3) cyclo hexane - ethyl acetate 9:1. Detection under UV 365 nm. Identification by fingerprint techniques. Quantification by HPLC.

J. Chinese Trad. Patent Med. (Zhongchengyao), 27 (8), 903 - 905 (2005). TLC of Tangniaoling tablets on silica gel with 1) chloroform - methanol 20:1; 2) chloroform - methanol 10:1. Detection 1) by spraying with 5 % vanillin in H2SO4 solution and heating at 105°C. Identification by fingerprint techniques. Quantification of puerarin by HPLC.

J. Planar Chromatogr. 30, 474-480 (2017). HPTLC of phenol (1), pyrocatechol (2), hydroquinone (3) and trihydroquinone (4) in urine samples on silica gel with hexane – dioxane – ethyl acetate 7:1:2. Detection by spraying with Folin‒Ciocalteau phenol reagent – water 1:2. Visible blue color zones of the four phenolic benzene metabolites were punched 2 cm in diameter individually using a paper punching machine, and collected in test tubes containing 1 mL of distilled water. To 10 μL of Folin–Ciocalteu reagent in each tube 60 μL of 20 % sodium carbonate solution were added. Quantitative determination by absorbance measurement at 765 nm. The hRF values for (1) to (4) were 69, 40, 28 and 9, respectively. Linearity was between 0.25 and 1.5 mg/mL for (1) to (4). LOD and LOQ were 9 and 3 μg/mL for (1), 30 and 90 μg/mL for (2), 6 and 18 μg/mL for (3), and 7 and 21 μg/mL for (4). The intermediate/interday/intra-day precisions were below 4 % (n=5). Average recovery was between 92 and 98 %.

VCH, Weinheim (1987), 223 pages. The book is one of the most important publications in the area of toxicological analysis, presenting TLC data for about 1100 toxicologically relevant substances, mainly drugs and pesticides in ten selected solvent systems.

J. Planar Chromatogr. 5, 124-130 (1992). HPTLC of thyreostatic drugs (thiouracil, methylthiouracil, tapazole, propylthiouracil, phenylthiouracil) on silica with dichloromethane - methanol 98:2 in the first direction; after drying and adding the thyreostatic drug assumed to be present development in the second direction with dichloromethane - propionic acid 98:2. Detection via fluorescence induction of the 7-chloro-4-nitrobenzo-2-oxa-1,3-diazole derivatives of the drugs with cysteine; quantification by densitometry in the fluorescence mode.

J. Planar Chromatogr. 8, 388 - 392 (1995). HPTLC of MDA.HCl, MDMA.HCl, MDE.HCl, BDB.HCl, MBDB.HCl, LSD, and atropine on silica with dichloromethane - methanol 200:3 in the presence of NH3 in a separate 10 mL glass vessel for LSD, ethyl acetate - acetone - methanol - 25% NH3 50:50:20:1 for MBDB, acetone - ethanol - 25% NH3 90:7:3 for atropine. Identification by in situ FTIR measurement.

J. Planar Chromatogr. 11, 309-310 (1998). TLC of phenytoin on silica gel with hexane - acetone 6:4 in a previously saturated TLC chamber. After drying the plate was sprayed with 0.1% bromine solution in carbon tetrachloride, and after 5 min sprayed with 0.1% o-toluidine (in 0.5% acetic acid) reagent. A blue spot of the quinoid oxidation product of o-toluidine appeared at Rf 0.65. The reagent gives a similar color reaction with some benzodiazepines.

Analysis of choline esterase inhibitors. CBS 83, 4-5 (1999) HPTLC-AMD of choline esterase inhibitors on silica gel with a 15-step gradient from methanol via dichloromethane to hexane. Detection by spraying with butyryl choline esterase solution followed by incubation at 37 °C for 30 min, and spraying with fast blue salt mixed with alpha-naphthyl acetate followed by incubation at 37 °C for 5 min. Quantitative determination by absorbance measurement at 254 nm.