Bol. Soc. Chil. Quim. 47, 61-66 (2002). HPTLC of cholesterol, triolein and phosphatidylcholine on silica gel by AMD with a gradient from chloroform - methanol - water 65:35:4 to diethylether - n-hexane 1:1 to n-hexane in 15 steps. Visualization by dipping in manganese(II) chloride reagent and heating at 110°C for 10 min. Quantification by densitometry at 366 nm/>400 nm. Recovery was found to be 99,4 %, repeatability and intermediate repeatability resulted adequate. Limit of detection (quantification) was 6,9 (21,2) ng for phosphatidylcholine, 2,6 (4,0) ng for cholesterol and 3,4 (8,7) ng for triolein.

J. Planar Chromatogr. 28, 380-385 (2015). HPTLC of taurocholic acid (1), glycodeoxycholic acid (2) and taurodeoxycholic acid (3) in ten Thai edible plants on silica gel with chloroform - methanol - acetic acid 7:2:1. Quantitative determination by absorbance measurement at 366 nm. Linearity was in the range of 34-2200 ng/zone for (1), 33-2100 ng/zone for (2) and 30-1900 ng/zone for (3). LOD and LOQ were 10 and 50 ng/zone for (1), 20 and 40 ng/zone for (2) and 10 and 50 ng/zone for (3). The intermediate precision was below 1.2 % (n=6). Average recovery for (1) to (3) was 99, 100 and 100 %, respectively.

J. Chromatogr. 497, 139-146 (1989). TLC of faecal bile acids on silica with isooctane - 2-propanol - acetic acid 30:10:1 for the 1st development and isooctane - ethyl acetate - acetic acid 10:10:2 for the 2nd. Detection by dipping into 0.2% 2,7-dichlorofluorescein ethanol solution. Quantification by fluoro densitometry at 366 nm. Good correspondence between this method and GC.

IV. Comparison of separation of studied bile acids by the use of cluster analysis. J. Liq. Chrom. & Rel. Technol. 27, 2987-2995 (2004). TLC of bile acids (cholic, glycocholic, glycolithocholic, deoxycholic, chenodeoxycholic, glycodeoxycholic, and lithocholic acid) on silica gel and a mixture of silica gel and Kieselguhr with n-hexane - ethyl acetate - acetic acid in various volume compositions. Detection with 10 % aqueous sulfuric acid followed by heating at 120 °C for 20 min. On silica gel the separation of glycocholic from glycodeoxycholic acid was difficult, on the mixed silica gel - Kieselguhr layer the separation of cholic acid from glycolithocholic acid. The obtained results indicate that similar analysis can be an alternative method for the estimation of chromatographic separations of studied bile acids.

Advances in Liquid Chromatography, Sept. 3-6 (1988), Szeged, Hungary. TLC on silica with dichloromethane - methanol 85:15, or ethyl acetate - methanol - NH3 85:10:5. Detection by spraying with vanillin - sulfuric acid. TLC screening of the ecdysteroid content of plants.

(Hungarian). Acta Pharmaceutica Hungarica 69, 72-76 (1999). TLC on silica gel with dichloromethane - ethanol 85:15, chloroform - methanol - benzene 25:5:3. Densitometry at 254 nm.

Chinese J. Pharm. Anal. 27 (3), 412-413 (2007). TLC of dexamethasone acetate on silica gel with dichloromethane – methanol 9:1. Detection under UV 254 nm.

Neighbouring group participation V. (0-4) Neighbouring group participation and fragmentation in the 16-hydroxymethylandrost-5-ene-3,17-diol series. Acta Chimica 110, 429-440 (1982). TLC of 16-hydroxymethylandrost-5-ene-3,17-diol and isomers on silica with a) methanol - benzene 1:99, b) methanol - benzene 5:95, c) acetone - benzene - petrol ether 30:35:35. Detection with 50 % aq. phosphoric acid and by heating at 100 -120 °C for 15 minutes.