Phytochemistry 28, 147-151 (1989). TLC of paniculidines A, B and C on silica with benzene - acetone 24:1 and hexane - chloroform - isopropanol 9:1:1. Detection under UV 254 nm or by spraying with 10% sulfuric acid followed by heating.

Fresenius Z. Anal. Chem. 321, 556-558 (1985). Description of sequential centrifugal layer chromatography (SCLC), a new technique for preparative separation of isomers and other substances. TLC of 5 bipyridyl isomers on silica with 1.9 % tetrahydrofuran -1.59 % dioxane -1.39 % methoxyethanol -95.12 % hexane. Detection by UV 254 nm.

Food Chem. 95, 58-64 (2006). HPTLC of nicotinic acid (1) and pyrazole-3(5)-carboxylic acid (2) of Volvariella volvacea on silica gel with chloroform – methanol 17:3 with one drop of formic acid added. Quantitative determination by absorbance measurement at 190 nm for (1) and 262 nm for (2). The hRf values for (1) and (2) were 30 and 40, respectively. Linearity was between 400 and 7000 ng/zone (1) and 200 and 2500 ng/zone for (2). The limits of detection and quantification were 50 and 400 ng/zone for (1) and 20 and 200 ng/zone for (2). Recoveries of both compounds were between 96 and 102 %.

62nd Indian Pharmaceutical Congress Abstract No. F-13 (2010). HPTLC of risperidone in bulk and pharmaceutical dosage form on silica gel with dichloromethane – methanol – ethanol – triethylamine 120:120:60:1. Quantitative determination by absorbance measurement at 280 nm. The linearity was obtained in the range 4-8 µg/spot (r2 =0.9989). The limit of detection and the limit of quantification for risperidone were 98 ng/zone and 599 ng/zone, respectively. The recovery was 99.5 %.

62nd Indian Pharmaceutical Congress Abstract No. F-343 (2010). TLC of hydrochlorothiazide (HCTZ) and irbesartan (IRBE) on silica gel with toluene – acetic acid – methanol 70:2:50. Quantitative determination by absorbance measurement at 264 nm. The hRf values were 15 for HCTZ and 45 for IRBE. The linearity was in the range of 90-540 ng/band and 180-900 ng/band with r2= 0.9989 for HCTZ and IRBE. The recovery of HCTZ was 95.3-97.7 % and of IRBE 95.2-98.7 %.

Planta Medica 83(01/02), 143-150 (2017). Preparative TLC on silica gel H to purify amide alkaloids from column chromatography apolar subfractions of aerial part methanolic extracts of: a) Piper flaviflorum: decenoylpiperidide (petroleum ether – acetone 10:1), N-methoxycinnamoyl-pyrrolidine, dihydropiperyline, stigmalactam, chingchengenamide A (petroleum ether – ethyl acetate 8:1); and b) P. sarmentosum: methylenedioxyphenyl-undecadienoyl/undecatrienoyl-pyrrolidine (petroleum ether – acetone 1:2), cinnamoyl-hydroxypyrrolidine and deacetylsarmentamide B (chloroform – methanol 9:1); detection with Dragendorffʼs reagent.

J.A.O.A.C. 70, 1-14 (1987). 1- and 2-dimensional TLC of uric acid and derivatives from organ extracts or infested foodstuffs on cellulose. Method precision ± 4.6%, detection limit 5 µg, visualization with arsenophospho- tungstic acid, quantification by densitometry or spectroscopic techniques.

I. J. Chromatogr. 542, 531-561 (1991). TLC of 1.4-thiazolidinones on silica with one- and two-component solvent systems. Investigation of the effects of various properties of developing solvents and migrating species on Rf values. Quantification by spectrophotometry after elution.