Chinese J. Trad. Pat. Med. (Zhongchengyao) 26 (9), 716-719 (2004). TLC on silica gel with 1) ethyl acetate - chloroform - formic acid 3:2:1; 2) chloroform - methanol 7:2; 3) petroleum ether (60-90 ºC) - ethyl acetate 7:3. Detection 1) under UV 365 nm; 2) by spraying with 10 % H2SO4 in ethanol and heating at 105 ºC for 5 min; 3) by spraying with vanillin - H2SO4 solution. Identification by fingerprint technique. Quantification of icarrin by HPLC.

Chinese J. Trad. Pat. Med. (Zhongchengyao) 27(1), 34-37 (2005). TLC on silica gel with 1) benzene - acetone - ethyl acetate - ammonia water 10:15:20:1; 2) ethyl acetate - butanone - formic acid - water 5:3:1:1; 3) n-butanol - glacial acetic acid - water 7:1:2. Detection 1) by spraying with potassium iodobismuthate solution; 2) by spraying with 2 % FeCI3 in ethanol; 3) by spraying with vanillin - H2SO4 solution and heating; 4) under UV light. Identification by fingerprint technique. Quantification of geniposide by HPLC. The results for ten real life samples are given.

Talanta 60 (5), 945-953 (2003). TLC of linezolid from its alkaline degradation product on silica gel with isobutanol - ammonia 9:1. Quantitative determination by densitometric measurement at 244 nm. The proposed method and two other methods (based on spectrophotometry) were successfully applied to the determination of the drug in bulk powder, in laboratory prepared mixtures with its degradation product and in commercial tablets.

J. Chinese Trad. Patent Med. (Zhongchengyao) 27 (8), 938-941 (2005). TLC on silica gel with ethyl acetate - water - formic acid 10:1:1. Detection under UV 254 nm. Quantification of aristolochic acid l and ll by HPLC with gradient elution. Results are given for six batches of real life samples.

Chromatographia, 66 (1-2), 95-102 (2007). Description of two sensitive and reproducible methods for the quantitative determination of dasatinib in the presence of its degradation products. HPTLC on silica gel with toluene - chloroform 7:3, followed by densitometric measurement at 280 nm. Validation of both separation methods according to ICH guidelines, no interference from the tablet excipients was found. Discussion of application of the methods as the stability indication because the proposed analytical methods could effectively separate the drug from its degradation products, which was subjected to acid–alkali hydrolysis, oxidation, dry heat, wet heat and photo-degradation.

J. Planar Chromatogr. 29, 394-396 (2016). HPTLC of 1-(8-bromobenzo[1,2-b;4,5-b′]difuran-4-yl)-2-aminopropane, popularly known as Bromo-DragonFLY on silica gel with methanol – ammonia 200:3. Quantitative determination by absorbance measurement at 281 nm. The hRF value for Bromo-DragonFLY was 50. Linearity was between 6 and 75 μg/zone. The intermediate precisions were below 4.3 % (n=3). The LOD and LOQ were 2.1 and 6.3 μg/zone, respectively. Average recovery was 94.5 %.

Detection and identification of phenethylamines (stimulants and hallucinogenes). Sci. Pharm. 55, 1-11 (1987). Method for the rapid identification of phenethylamine. Color reactions with 4 reagents: a) formaldehyde - sulfuric acid (Marquis), b) ammoniummetavanadate - sulfuric acid (Mandelins), c) ammoniummolybdate - sulfuric acid (Fröhde), d) nitric / sulfuric acid as preliminary group identification preceding TLC. TLC with 6 separation systems, 4 using silica, 2 RP-18 layers, with 6 solvent systems. Postchromatographic derivatization with 5 systems selected according to layer material and previous observations. Results of the identification procedure presented in the form of tables.

J. Chinese Herb Med. (Zhongcaoyao) 23, 125-126 (1992). TLC of six bufoginins on silica with chloroform – acetone – cyclohexane 3:3:4. Quantification by densitometry at 300 nm.