Planta med. 68, 631-634 (2002). Preparative TLC of helietidine, y-fagarine, flindersine, kokusagenine, and maculosine on silica gel with chloroform - methanol 49:1. Detection by bioautography.

Planta med. 70, 59-64 (2004). Analytical and preparative TLC of withasteroids (physachenolide E and D) on silica gel with n-hexane - acetone 6:5 by 8-fold development and chloroform - acetone 7:3 by 4-fold development. Detection under UV light and by spraying with cerium sulfate - sulfuric acid reagent.

CBS 91, 12-13 (2003). HPTLC of flavonoids with tetrahydrofuran - toluene - formic acid - water 16:8:2:1, diterpenes with toluene - ethyl acetate 9:2, and iridoids with ethyl acetate - methanol - water 77:15:8 (with chamber saturation), in horizontal developing chamber over 52 mm. Detection of flavonoids by dipping warm plate in natural products reagent (0.5 % in ethyl acetate) followed by dipping in PEG 400 solution (5 % in dichloromethane), of diterpenes by dipping in 10 % methanolic sulfuric acid followed by heating at 105 °C, and iridoids by dipping in 4-dimethylaminobenzaldehyde reagent (1 % in 1 N methanolic HCl). Visual evaluation at 366 nm (flavonoids), white light (diterpenes), and white light with sharp cut filter 560 nm (iridoids). Stability of extracts was investigated under drastic stress conditions (acid, base, light, heat, humidity).

Planta med. 68, 626-630 (2002). Preparative TLC of 2-a-O-ß-D-glucopyranosyl-5aH-endesma-4(15),11(13)-dien-12,8ß-olide on silica gel with dichloromethane - methanol 6:1 by 2-fold development.

Chinese J. Chromatogr. (Sepu) 22 (3), 296-297 (2004). TLC of rhodojaponin III on silica gel with chloroform - methanol 9:1. Detection by spraying with 10 % H2SO4 in ethanol and heating. Identification by comparison with the standard. Quantification by densitometry at 550 nm. Validation of the method by investigating its linearity range (0.1-4.0 µg/spot, r=0.997), precision (RSD=1.30-3.34 %, n=8), and recovery (95.4-101.5 %, RSD=1.97 %, n=5).

Chinese J. Trad. Patent Med. (Zhongchengyao) 26 (5) 364-367, (2004). TLC of Bunao pill extracts on silica gel with 1) dichloromethane - methanol 10:1; 2) acetone - benzene - hydrochloric acid (3 mol/L) 80:30:1. Detection 1) by spraying with 5 % phosphomolybdic acid in ethanol and heating at 120 ºC ; 2) by spraying with hypo acetamide solution and heating at 80-100 ºC. Identification by fingerprint techniques. Quantification of tanshinone ll by HPLC with method validation.

J. Planar Chromatogr. 17, 46-50 (2004). Two-dimensional TLC and HPTLC of cephalosporins (cefaclor, cefaperazone sodium, cefazolin sodium, cefotaxime sodium, cefoxitin sodium, cefuroxime sodium, cephalothin sodium, p-chlorophenacyl cephalotin ester) on silica gel in a horizontal chamber with methanol - 98 % formic acid - ethyl acetate 29:1:70 in the first dimension followed by methanol - toluene - ethyl acetate - 98 % formic acid 1:4:13:2 in the second dimension after drying for 1 h . Detection under UV light at 254 and 366 nm. Quantitative determination at 240 nm.

J. Planar Chromatogr. 17, 286-289 (2004). HPTLC of isoquercitrin, avicularin, rutin, apigenin 7-glucoside, naringin, and hesperidin on silica gel with ethyl acetate - methanol - formic acid 90:10:1. Detection under UV light at 254 nm and by spraying with 1 % methanolic diphenylboric acid beta-ethylamine ester, followed by spraying with 5 % ethanolic polyethylene glycol 4000. Quantitative determination by densitometry at 254 nm. Report of the possibilities and advantages of HPTLC for investigation of hydrolysis.