J. Planar Chromatogr. 7, 242-246 (1994). HPTLC on silica with ethyl acetate. Quantification by densitometry at 285 nm (absorbance). Recovery >94% (1-2 ppm 5-HMF). A rapid method with minimum sample preparation, has been developed for detection of 5-(hydroxymethyl)-2-furfural. The high throughput and sensitivity of the method suggest wide application to a variety of dextrose-containing parenteral solutions which require 5-HMF testing.

J. of Natural Products 60, 519-524 (1997). TLC of various natural and synthetic xanthones on silica with hexane - chloroform 2:3 or 1:4 and with hexane - methanol 19:1. Detection under UV 254 and 365 nm or by spraying with 10% H2SO4 in ethanol.

Planta med. 65, 470-72 (1999). Preparative TLC of a new dimeric xanthanolide pungiolide C and the dimeric xanthanolide pungiolide A on silica gel with petroleum ether - ether 1:3. Detection under UV.

J. Liq. Chrom. & Rel. Technol. 24, 1397-1410 (2001). Analytical and preparative TLC of coumarins (xanthotoxin, bergapten, scopoletin, umbelliferone, imperatorin, isoimperatorin, edultin, osthol, ostruthin, (+)cis-khellactone) on silica gel and Florisil with ternary mixtures containing 5, 10, 15, and 20% of eleven polar modifiers, in hexane - dichloromethane 1:1. Visualization under UV 365 nm. Separated zones were scraped off the plate, washed with acetone -methanol 1:1 and re-chromatographed.

J. Planar Chromatogr. 19, 195-199 (2006). HPTLC of scopoletin on silica gel with toluene - diethyl ether 1:1, saturated with 10 % glacial acetic acid, in a twin-trough chamber saturated with mobile phase for 45 min. Evaluation by densitometry at 366 nm. The method was validated for linearity, accuracy, interday and intraday precision, specificity, repeatability of measurement of peak area, and repeatability of sample application. Limit of detection was 50 ng/spot.

Planta Medica 82, 11/12, 973-985 (2016). TLC was applied for three purposes in the study on the activity of Ephedra sinica aerial parts against the X-linked inhibitor of apoptosis protein. First, an alkaloid-enriched fraction obtained according to Reti’s method (1953) was controlled with Dragendorff’s reagent on TLC (layer, eluent unknown). Second, the column fractionations of the ethanol extracts were monitored by TLC on silica gel with petroleum ether – ethyl acetate – methanol 6:4:1, detection with vanillin - sulfuric acid reagent. Third, to allow the determination of the polymerization degree of proanthocyanidins of one active fraction, a subfraction was incubated 6 h at 50 °C in methanol with hydrochloric acid and benzylmercaptan. This thiolytical degradation was monitored by TLC on silica gel with toluene – ethyl acetate – methanol – ethanol – acetic acid – water 20:16:2:2:4:1, detection with vanillin - sulfuric acid reagent; the reaction was found complete, giving thioether adducts for each catechic unit (mere flavanols for the terminal unit), the products were identified and quantified by HPLC-MS._x000D_

Acta Botanica 28, 279-290 (1982). TLC of cannabinoids on silica with hexane - dioxan 4:1. Detection with fast blue salt in 70 % ethanol.

J. Agric. Food Chem. 84, 456-458 (1986). Isolation of coumarin by TLC on silica with dichloromethane - methanol 99.5:0.5, petrol ether - ether - ethyl acetate 90:5:5 and petrol ether - ethyl acetate 8:2. Detection by UV 365 nm and identification by cochromatography.