Youji Huaxue 1987, 67-69. TLC of 5 alpha -androst 2,16-diene 4,5 alpha -androst -16-en-3-one 3 and other androstene derivatives on silica with hexane - ethyl acetate 7:3. Detection by spraying with methanolic sulfuric acid 1:1, followed by densitometry.

(Hungarian). Acta Pharmaceutica Hungarica 62, 88-96 (1992). TLC of pipecuronium bromide on silica with methanol - acetone - A. solvent - B. solvent 51,4:38,6:10:2. A. solvent = 7 g ammoniumcarbonate in 100 mL conc. NH3, B. solvent = 10 g ammoniumchloride + 2 mL water in 50 mL conc. NH3. Detection with Dragendorff reagent, densitometry at 525 nm. Detection limit 0.02 µg.

J. Liquid Chrom. 9, 3461-3457 (1986). Isolation of dexamethasone sodium phosphate and betamethasone sodium phosphate after alkaline phosphatase reaction. TLC on silica with chloroform - methanol - water 180:15:1 or dichloromethane - ether - methanol -water 77:15:8:1; location under short wave UV. Quantification after extraction with ethanol by absorbance at 240 nm. Average recovery 100.56 resp. 100.46 %. Assay of unesterified steroids and identification of preservatives (e.g. methyl or propyl parabenzoates, phenol, benzylalcohol) may be carried out by the same method.

(Hungarian). Acta Pharmaceutica Hungarica 62, 82-87 (1992). TLC of intermediates of pipecuronium bromide on silica with benzene - acetone 8:2, cyclohexane - ethyl acetate 9:1, chloroform - methanol 1:1 or 6:4, benzene - ethyl acetate 7:3 or 95:5, hexane - acetone 85:15. methanol - conc. NH3 - (NH4)2CO3 2 mL + 5 mL + 0.35 g; hexane - methanol - conc. NH3 - (NH4)2CO3 2 mL + 18 mL + 2 mL + 0.14 g; acetonitrile - methanol - A. solvent - B. solvent 77,2:51.4:10:1; A. solvent = conc. NH3 - (NH4)2CO3 100 mL + 7 g, B. solvent = ammoniumchloride - water - conc. NH3 9 g + 2 mL + 50 mL; chloroform - methanol - NaI 50 mL + 50 mL + 1g. Detection with sulfuric acid and Dragendorff reagent.

J. Planar Chromatogr. 20, 91-94 (2007). Descripton of the modeling of TLC separation of androstane isomers to find the optimum mobile phase. A mathematical model was developed and tested. The model takes into account the interaction between solvents and uses a complex function for modeling. The proposed mathematical model gives results similar to those obtained by use of other optimization models, e. g. the Simplex and Prisma methods. TLC of 5alpha-androstan-3beta-ol, 5alpha-androstan-3alpha-ol, 5alpha-androstan-17beta-ol, 5beta-androstan-3alpha,17beta-diol, 5alpha-androstan-3beta,17beta-diol on silica gel in a saturated chamber using different mixtures of chloroform, acetone, and petroleum ether resulting in an optimum mobile phase composition of 55:19:26. Detection by spraying with 5 % ammonium molybdate and 5 % sulfuric acid in water and heating to 80 °C.

Hungarian Scientific Instruments 62, 1-9 (1986). Separation of amino acids and S-containing amino acids on cellulose with MEK -acetonitrile - acetic acid - water 3:4:1:2. Separation of N-methylated and N-formylated L-lysine on silica with propanol - methanol - 0.1 M aqueous Na-acetate 20:3:30, Separation of ether soluble DN amino acids on silica with chloroform - carbon tetrachloride -MEK - propanol - methanol - acetic acid 30:30:20:30:15:2. Separation of corticosteroids with acetonitrile - butyl acetate 1:1 and of trigonelline from tomato juice with propanol - methanol - 0.1 M Na-acetate. Appropriate staining reagents; densitometry by absorbance.

J. Gaoxiong Med. Sci. (Gaoxiong Yixue Kexue Zazhi) 7, 545-549 (1991). TLC of 8 glucocorticoids on silica with chloroform - dioxane - methanol 15:4:1. Detection by derivatization with (1S)-(-)-camphanic chloride using triethylamine as a catalyst.