Planta Med. 83, 1011-1019 (2017). The subfractionation on silica gel column of a diethyl ether fraction of a hydromethanolic extract of Lamium album aerial parts was controlled by TLC on silica gel with ethyl acetate – formic acid – water 20:2:3. Detection was performed at UV light after derivatization with 1 % Natural Product Reagent A. From the last subfraction, caffeic acid and tiliroside were isolated. The same TLC monitoring was applied for the fractionation of the butanol fraction of the extract. Some fractions and their subfractions were purified on dextran gel (Sephadex LH-20), and monitored by TLC on silica gel with ethyl acetate – formic acid – acetic acid – water 100:11:11:26, with the same detection. These subfractions contained caryoptoside and other iridoids, glucomartynoside, lamiusides and other phenylpropanoid derivatives.

Planta Med. 48, 5-9 (1983). TLC of anacardol, cardanol on AgNO3 impregnated silica with dichloromethane-ethyl acetate 8:2. Detection by UV, fast blue salt B; dichloroquinone chloroimide. Immersion in dichloroquinone chloroimide for even coloring, spraying with 1 % NaHCO3 solution and heating at 100 °C for 5 minutes. Densitometry at 600 nm.

Identification, semi-quantitative determination and TLC detection limits of phenolic compounds on sorption layers impregnated with diazido(4,4')-disulpho(2,2')-stilbene. Z. Anal. Chem. 329, 55 (1987). TLC of phenol, 2-, 3-, 4-methylphenol, 1,3,4-, 1,3,5-, 1,2,3-, 1,2,5-, 1,2,6-,1,2,4-dimethylphenol on silica impregnated with 0.02% methanolic diazido(4,4')-disulfo(2,2')-stilbene solution with benzene - acetone 9:1. Detection under UV. Detection limits between 0.6 and 4 µg.

J. Chromatogr. 511, 396-401 (1990). HPTLC of natural phenolic compounds with the AMD system on silica using a 20-step gradient based on methanol – dichloromethane – water – formic acid. Detection under UV 360 nm for coumarins and phenol carboxylic acids, and by dipping in a 4% aqueous aluminium sulfate solution for flavonoids. Densitometry at 360 nm.

Herba Hungarica 29, 43-48 (1990). TLC of ethyl gallate, methyl gallate, gallic acid, m-digallic acid, catechol and ellagic acid on silica with benzene – acetic acid 1:1. Visualization under UV and by spraying with FeCl3 or Folin’s reagent. Thermofractography of tannins isolated from Acacia pods by the TAS method on silica with benzene – ethyl acetate – formic acid 30:19:1. After drying for 5 min, visualization under UV before and after spraying with Naturstoff reagent.

J. Agric. Food. Chem. 42, 963-967 (1994). TLC of phenolic fractions on microcrystalline cellulose with 1-butanol - acetic acid - water 4:1:5, 6% acetic acid, acetic acid - hydrochloric acid - water 30:3:10; after drying observation under log-wave UV, then sprayed with vanillin reagent to detect flavan-3-ols or with a mixture of equal volumes of 2 % K3[Fe(CN)6] + 2% FeCl3 to detect phenolics. Radiolabeled compounds were detected by autoradiography.

Fresenius J. Anal. Chem. 354, 889-891 (1996). TLC of 2-chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,5,6-tetrachlorophenol and pentachlorphenol on RP-18 with acetonitrile - water 7:3. Quantification by densitometry at 254 nm and 216 nm. Recovery 97 %. New TLC procedure for the determination of PCP (pentachlorphenol) in leather goods.

J. Planar Chromatogr. 11, 12-15 (1998). HPTLC of 12 phenolic acids (p-coumaric, chlorogenic, ferulic, caffeic, syringic, vanillic, o-coumaric, a-resorcylic, g-resorcylic, trans-cinnamic, 3-hydroxybenzoic, gallic acid) with binary mobile phases comprising mixtures of n-heptane with ethyl acetate, isopropanol, dioxane, or tetrahydrofuran as polar modifiers, each containing 1% acetic acid.