Planta Med. 71, 754-758 (2005). Analytical and preparative TLC of sarcolobin, sarcolobone, 6,7-dimrethoxy-2,3-dihydrochromone and 10 known compounds on silica gel with chloroform - petroleum ether - ethyl acetate 20:11:10. Visualization under UV light at 254 and 366 nm and/or by spraying with cerium sulfate (1 % in 10 % aqueous sulfuric acid) followed by heating at 105 °C for 5 min. Also centrifugally accelerated TLC on silica gel with an Chromatotron instrument in a nitrogen atmosphere using petroleum ether - ethyl acetate 2:1.

C. Cheng by thin-layer chromatography) (Chinese). Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 25 (6), 719- 721 (2005). TLC of fulvotomentoside A on silica gel with chloroform - methanol - water 61:32:5. Detection by spraying with 10 % H2SO4 in ethanol followed by heating at 105 ºC for 5 min. Quantitative determination by densitometry at 518 nm. The procedure was validated regarding linearity range (1.20 - 7.20 µg/spot, r = 0.998), repeatability (0.51 %, n = 5), precision (0.21 %, n = 5 within plate and 0.87 % n= 5 plate-to-plate), and recovery (99.7 %, RSD = 2.45 %, n = 5). The results are given for three batches of real life samples.

J. Chinese Trad. Patent Med. (Zhongchengyao) 29 (2), 217 0 221 (2007). TLC of the extracts of Anxinkang dropping pills on silica gel with 1) chloroform - methanol - ammonia 25:3:1; 2) petroleum ether (60 - 90 ºC) - ethyl acetate 20:1; 3) ethyl acetate - acetone - methanol 5:5:1. Detection 1) by spraying with 10 % potassium iodobismuthate solution; 2) by spraying with 5 % p-diethylaminobenzaldehyde in 10 % H2SO4 in ethanol, and heating at 105 °C for 10 min; 3) by spraying with 10 % H2SO4 in ethanol and heating at 105 °C. Identification by comparison with standard.

Indian Drugs 44 (2), 117-121 (2007). HPTLC of rutine in methanolic extracts of powdered and dried Morus alba Linn. leaves, on silica gel with ethyl acetate - formic acid - glacial acetic acid - water 16:1:1:2. Detection and quantification of rutine by densitometric scanning at 254 nm. The method was validated for its precision. The accuracy of the method was checked by conducting recovery studies at three different levels of rutin and the average percentage recovery of rutin was found to be 96.9%. The proposed HPTLC method provided a good resolution of rutine from other constituents and can be used for quantitation of rutine present in the leaves of Morus alba Linn.

J. Planar Chromatogr. 20, 61-64 (2007). HPTLC of flavonoids (catechin, epicatechin, gallocatechin, catechin gallate as standards) on RP-18 with acetonitrile - water - formic acid 10:40:3. The best separation of catechin and epicatechin was achieved by multiple gradient development with increasing concentrations of acetonitrile (from 20 to 22%) in the water - formic acid mixture. UV detection at 282 and 500 nm (after derivatization with vanillin-phosphoric acid) for estimation of catechin content.

J. Planar Chromatogr. 20, 135-138 (2007). HPTLC of eugenol (4-allyl-2-methoxyphenol) on silica gel prewashed with methanol in a twin-trough chamber saturated for 20 min with toluene - ethyl acetate - formic acid 93:7:1.4). Quantitation by scanning at 289 nm.

J. Planar Chromatogr. 20, 275-277 (2007). HPTLC of bergenin and gallic acid on silica gel with ethyl acetate - formaldehyde - acetic acid - water 80:1:2:1 in a saturated twin-trough chamber. Quantitation was performed by scanning at 260 nm in absorption mode.

fruits. Indian Drugs 45(11), 908-910 (2008). HPTLC of embelin in ethanolic extract of dried fruits of Embelia ribes Burm. on silica gel with ethyl acetate - methanol 9:1. Quantitative determination by absorbance measurement at 365 nm. The total content in Embelia ribes fruit was 0.034 %. The proposed HPTLC method provides a good resolution of embelin from other constituents present in the ethanolic extract of dried fruits of Embelia ribes Burm.