J. Planar Chromatogr. 23, 7-13 (2010). TLC of the enantiomers of racemic atenolol, metoprolol, propanolol, and labetalol on silica gel using vancomycin as chiral impregnating agent or as chiral phase additive. With vancomycin as impregnating agent, resolution of the enantiomers of atenolol, metoprolol, propanolol, and labetalol was achieved with acetonitrile - methanol - water - dichloromethane 7:1:1:1, acetonitrile - methanol - water 6:1:1, acetonitrile - methanol - water - dichloromethane - glacial acetic acid 14:2:2:2:1, and acetonitrile - methanol - water 15:1:1. With vancomycin as mobile phase additive, resolution of the enantiomers of metoprolol, propanolol, and labetalol was achieved using acetonitrile - methanol - 0.56 mM aqueous vancomycin (pH 5.5) 15:1:2, and acetonitrile - methanol - 0.56 mM aqueous vancomycin (pH 5.5) - dichloromethane 18:2:3:2, respectively. Chromatograms were developed in glass chambers previously equilibrated with the mobile phase at 16 +/- 2 °C for 10-15 min. Detection by exposure to iodine vapor. The detection limits were 1.3, 1.2, 1.5. and 1.4 µg for each enantiomer of atenolol, metoprolol, propanolol, and labetalol, respectively.

J. Planar Chromatogr. 29, 108-112 (2016). HPTLC of water-soluble vitamins (B1, B2, B6, C, and B12), amino acids and β-blocker enantiomers (carvedilol, (S)-(−)-propranolol hydrochloride, (±)-propranolol hydrochloride, and (±)-sotalol hydrochloride) on novel core–shell polymers consisting of hyperbranched (poly(ethyleneimine)) core surrounded by oligosaccharide shell (PEI-OS) as a component of the silica gel phase. The influence of the weight of the hyperbranched PEI core (5 and 25 kDa) was investigated. β-blocker enantiomers were separated using acetonitrile - methanol 7:3. PEI-maltose and PEI-lactose were the most effective polymers for the chiral separation of β-blockers.

J. Chromatogr. 450, 241-252 (1988). Description of the separation of enantiomers using forced-flow planar chromatographic techniques such as OPLC and rotation planar chromatography. Discussion of the operating conditions for circular and linear developments with the separation of D, L-a-methylserine as an example.

Chinese J. Chromatogr. (Sepu) 8, 363-367 (1990). A review with 60 references on the separation of chiral molecules by TLC, GC, LC, SFC and electrophoresis.

Chiral separations with aqueous solvents and liquid-liquid systems. J. Chromatogr. 635, 346-348 (1993). Examination of the enantiomers of substituted tryptophans by TLC on micro crystalline cellulose with aqueous solvents and liquid-liquid systems. Discussion of the mechanism of separation in liquid-liquid systems.

J. Liquid Chromatogr. 17, 1125-1139 (1994). TLC on silica with 1) petrol ether (40-60 °C) - ether - formic acid 50:50:1, 2) water - acetic acid 9:1. Visualization under UV 254 and 366 nm before and after spraying with an ethanolic solution of KOH (5%) without and with heating at 100 °C for 10 min. Also HPLC method.

Biomed Chromatogr. 11, 286-288 (1997). TLC on silica gel impregnated with (1R,3R, 5R)-2-azabicyclo[3,3,0]octan-3-carboxylic acid with 0.5 M NaCl - acetonitrile in different ratios and addition of methanol in some cases. Visualization under UV 254 nm for dansyl-DL-amino acids. Development with different combinations of acetonitrile - methanol - water and detection by spraying with 0.2% ninhydrin in acetone for amino acids.

J. Chromatogr. B 752 (2), 311-322 (2001). The peptide mix obtained from in-gel or on-blot degestion wax analysed directly after degestion or after concentration on POROS R2 beads. 2 DE of Mycobacterium bovis BCG Chicago cell proteins. Eight protein spots were identified using four preparation procedures for MALDI-MS. Overall, on-blot degestion was as effective as in-gel degestion. Whereas higher signal intensity resulted after concentration, hydrophilic peptides are better detected by direct measurement of the peptide mix without POROS R2 concentration.