Chromatographia 68 (9-10), 855-859 (2008). HPTLC of moclobemide on silica gel with benzene – methanol – 40 % ammonia 70:30:1. Quantification by absorbance measurement at 238 nm. The degradation products reached under acidic, basic, and oxidising conditions were well resolved from the pure drug. Linearity was in the range of 50–600 ng/band, with a determination coefficient r2 of 0.9967 ± 0.51. LOD and LOQ, determined experimentally, were 10 and 30 ng/band, respectively. The method was used to investigate the kinetics of alkaline degradation, the Arrhenius plot was constructed and the activation energy calculated.

J. Planar Chromatogr. 24, 412-418 (2011). HPTLC of milnacipran hydrochloride on silica gel, prewashed with methanol, with chloroform - methanol - ammonia 64:25:2 in a twin-trough chamber saturated for 20 min. Detection under UV light at 245 and 366 nm. Quantitative determination by absorbance measurement at 220 nm. The hRf value of milnacipran was 45. Linearity was between 500 and 6000 ng/zone. The method precision, intra-day precision, inter-day precision, and different analyst precision (n = 6 each, %RSD), was 1.2, 1.9, 1.6, and 1.9 %, respectively. The mean recovery (n = 3) was 99.2-99.8 % with a % RSD between 0.6-1.7 %.

J. Planar Chromatogr. 29, 394-396 (2016). HPTLC of 1-(8-bromobenzo[1,2-b;4,5-b′]difuran-4-yl)-2-aminopropane, popularly known as Bromo-DragonFLY on silica gel with methanol – ammonia 200:3. Quantitative determination by absorbance measurement at 281 nm. The hRF value for Bromo-DragonFLY was 50. Linearity was between 6 and 75 μg/zone. The intermediate precisions were below 4.3 % (n=3). The LOD and LOQ were 2.1 and 6.3 μg/zone, respectively. Average recovery was 94.5 %.

J .Chromatogr. Sci., 29, 423-427 (1991). HPTLC of sulfonamide on silica developed three times with mixtures of methanol, containing 2% NH3 (25%) and dichloromethane 3:7, 14:85 and 5:95. Detection by fluorescence quenching, or by spraying with a fluorescamine solution, and scanning by fluorescence at 366/>400 nm. Detection limit 0.32 ng. Limit of quantification, 4 µg/kg for milk and meat samples.

Arzneim. Forsch/Drug Res. 48, 294-299 (1998). TLC of epoxyethanesulfonamides, ethynesulfonamide and reference compounds (N-phenylacylsulfonyl derivative, N-phenacyl derivatives, morpholine, N-methylpiperazine) on alumina with two solvent systems: methanol - water 4:1 during 10 min, followed by hexane - ethyl acetate 4:1 during 30 min. Visualization under UV 254 nm and with different reagents including 2,2-dihydroxy-1-H-indene-1,3(2H)-dione or ninhydrin, Dragendorff and potassium permanganate reagent. Semi quantitation via color variation acc. to concentration.

J. High Resol. Chromatogr. 5, 581-582 (1982). HPTLC of serotonin (as benzoylamide), 5-hydroxytryptamide (of arachidic, behenic and lignoceric acid) on silica with benzene - ethyl acetate 4:3. Detection by dipping in Gibbs reagent. Fixation of the blue spots with 5 % aq. NH3 in methanol. Fluorometry.

Med. Industry (Yiyao Gongye) 16, 21-22 (1985) (Chinese). (Detection of free salicylamide in o-ethoxybenzamide by TLC.) TLC of salicylamide on silica with chloroform - ethanol 8:1. Detection by UV. Quantification by comparison with standard. Detection limit 2000 ng. Semiquantitative assay

J. Planar Chromatogr. 6, 324-325 (1993). HPTLC of amino alcohols and amines after derivatization with Marfey's reagent (1-fluoro-2,4-dinitrophenyl-5-L-alanine amide) on RP-18 silica with methanol - water mixtures 8:2; 7:3; 6:4; 5:5; 4:6. Detection under UV.