J. Planar Chromatogr. 9, 61-64 (1996). TLC of sulfonamides and degradation products (e.g. 2-amino-4,6-dimethylpyrimidine, sulfanilamide, sulfadimidine, 2-hydroxy-4,6-dimethylpyrimidine, sulfanilic acid) on silica with 1,2-dichloroethane - 2-propanol - NH3 (25%) - methanol 26:13:2:13. Detection under UV 254 and 366 nm and after spraying with Bratton-Marshall reagent or with p-dimethylaminobenzaldehyde solution.

J. Planar Chromatogr. 9, 459-461 (1996). HPTLC of amikacin (6-O-(3-amino-3-deoxy-a-D-glucopyranosyl) 4-O-(6-amino-6-deoxy-a-D-glucopyranosyl)-1-N-[(2S)-4-amino-2-hydroxybutyryl]-2-deoxy-D-streptamine) on silica with methanol - 25% NH3 - chloroform 10:10:1. After drying derivatization by immersion into 0.5% ninhydrin in n-butanol for exactly 1 s. Quantification by densitometry at 498 nm. Limit of detection and limit of quantification were 200 ng and 800 ng, respectively. RSD 1.22-1.49%.

J. AOAC Int. 81, 386-393 (1998). TLC of ceftazidime (I), cefuroxime sodium (II), and cefotaxime sodium (III) and degradation products on silica gel with methanol - 1 N acetic acid 1:3 for I and methanol - conc. ammonia 200:3; for II and III). Visualization under UV 254 nm. Quantitation by densitometry at 258, 272, and 262 nm. Precision = 0.8, 0.7, and 0.8% for I, II, and III, respectively. New simple, rapid, and selective procedure for quality control and routine analysis.

CBS 89, 9 (2002). HPTLC of feedstuff on silica gel with 1) chloroform - methanol 1:1 over 30 mm followed by drying and 2) n-hexane - acetone 4:1 over 50 mm in horizontal development chamber with sandwich configuration. Quantitative determination by absorbance measurement at 466 nm.

J. Chinese Trad. Patent Med. (Zhongchengyao) 25 (12), 1017-1019 (2004). TLC on silica gel developed with chloroform - ethyl acetate - methanol 20:15:2 at a temperature lower than 28 ºC. Detection under UV 254 nm, or by spraying with 2 % 3,5-dinitrobenzoic acid in ethanol - 2 M KOH 1:1. Identification by standard comparison. Quantitative determination by densitometry at 263 nm. Validation of the method by investigation of its linearity range, precision, repeatability, reproducibility, and recovery.

J. Chinese Trad. Patent Med. (Zhongchengyao) 26 (1), 19-23 (2004). TLC on silica gel in a basic developing system containing diethylamine. Detection by iodine vapour. Identification by standard comparison. Quantitative determination by densitometry at 340 nm. Validation of the method by investigation of the procedures, including sample preparation, mobile phase, visualization, scanning wavelength, linearity range (0.28-1.65 µg, r=0.9991), precision (RSD <1.4 % within plate and <2.4 % plate-to-plate), resolution, repeatability, reproducibility, and recovery (87.2 %-99.7 % for different medicine). Comparison of the results with those obtained by HPLC.

J. Chinese Trad. Patent Med. (Zhongchengyao) 25 (7), 547-549 (2004). TLC on silica gel with 1) chloroform - methanol - water 13:7:2; 2) chloroform - methanol - ethyl acetate - formic acid 20:8:4:1; 3) petroleum ether - ethyl acetate - formic acid 15:5:1; 4) chloroform - methanol - water 14:5:1. Detection 1) by spraying with 10% H2SO4 in ethanol and heating at 105 ºC; 2) by spraying with 5 % vanillin-H2SO4 solution and heating at 105 ºC; 3) under UV 365 nm. Identification by finger print technique. Quantitation of puerin by HPLC.

J. Chinese Trad. Patent Med. (Zhongchengyao) 25 (9), 719-720 (2004). TLC on silica gel with 1) chloroform - methanol - water 13:7:2, 2) chloroform - acetone - formic acid 10:5:2, 3) petroleum ether - ethyl formate - formic acid 15:5:1. Detection 1) by spraying with 10 % H2SO4 in ethanol and heating and under UV 365 nm, 2) by ammonia vapor and under UV 365 nm. Identification by fingerprint techniques. Quantitation of danshensu by HPLC. Discussion of use of the procedures for the quality control of the medicine.