J. Planar Chromatogr. 12, 38-41 (1999). TLC of acidic and neutral drugs on RP-18 with methanol - water 13:35 and of basic, amphoteric and quaternary drugs on silica with toluene - acetone - ethanol - conc. ammonia 45:45:7: 3; saturated chamber and RP-18 with methanol - water - conc. HCl 50:50:1. Scanning in absorbance mode at 220 nm, integration of peak areas, and recording of the UV spectra in situ within the spectral range 190 - 400 nm. Confirmatory visualization reactions were performed with the reagents Fast Black K salt, iodoplatinate, Dragendorff reagent, Marquis reagent, and Salkowsky reagent.

J. Planar Chromatogr. 18, 397-399 (2005). TLC of chloral hydrate, diazepam, phenobarbitone, saccharin, and anthranilic acid on silica gel in a presaturated chamber with n-hexane - acetone - methanol 16:6:1. Detection by spraying with 2 % sodium hydroxide solution, followed by spraying with 0.5 % orcinol solution and heating in an oven at 90 °C for 10 min. Evaluation under UV at 366 nm.

J. Planar Chromatogr. 20, 189-196 (2007). TLC of sabinene, limonene, linalool, and beta-caryophyllene on silica gel with benzene - ethyl acetate 9:1. Detection by spraying with a solution of vanillin in concentrated sulfuric acid, followed by heating at 105 °C for 2 min.

by TLC. Chromatographia 66 (7-8), 631-634 (2007). TLC of heraclenin and heraclenol in the roots of Heracleum candicans D.C. on silica gel with toluene - ethyl acetate 7:3. Quantitative determination by densitometry at 366 nmn. Linearity was between 4 - 10 µg/zone for heraclenin and 1 - 5 µg/zone for heraclenol.

59th Indian Pharmaceutical Congress C-42, 234, (2007). HPTLC of E-guggulsterone (a steroidal ketone present in oily resin of Commiphora mukul) and five marketed ayurvedic tablet formulations, on silica gel with toluene - propane-1-ol - glacial acetic acid 8:1:1. Densitometry at 254 nm. The hRf of E-guggulsterone was 61. Several marketed formulations were evaluated for E-guggulsterone, the UV spectra of the standard and that of the formulations were comparable in respect of E-guggulsterone. The TLC pattern showed several other zones corresponding to unknown phytochemicals. The method was suitable for quantitative evaluation of formulation in respect of E-guggulsterone in presence of other phyto chemicals.

J. AOAC Int. 91, 268-275 (2008). HPTLC of actein, 23-epi-26-deoxyactein, cimiracemoside, cimifugoside, caffeine, and tyrosine as standards on silica gel (prewashed with methanol) with toluene - ethyl formate - formic acid 5:3:2 in a saturated chamber. Detection under UV 254 and 365 nm, under white light after spraying with anisaldehyde reagent, and via the Bioluminex assay. For the Bioluminex assay the developed and dried HPTLC plate was coated with a buffered solution of luminescent Vibrio fischeri. Documentation of luminescent and inhibited zones with a CCD camera.

Indian Drugs 44(12), 937-944 (2007). HPTLC of the methanolic extract of Sesamum indicum root (Pedaliaceae) and its ethyl acetate fraction on silica gel with ethyl acetate - n-hexane 1:9. Absorbance measurement at 549 nm. The red zone was isolated by preparative TLC and identified by IR to be a 1,4-naphthoquinone derivative.

J. Chinese Trad. Patent Med. 30 (12), 1997-1800 (2008). TLC of Hongjinchan granule extracts on silica gel with 1) n-butanol - glacial acetic acid - water 7:1:2; and 2) chloroform - ethyl acetate 7:3. Detection 1) under UV 365 nm; 2) by spraying with 2 % iron(III) chloride in ethanol; 3) by exposure to ammonia vapor for approx. 15 min. Identification by comparison with the standards of the component drugs. Quantification of scutellarin by HPLC.