J. Planar Chromatogr. 17, 72-74 (2004). TLC of porphine, meso-mono-tert-butylporphyrin, meso-tetra-tert-butylporphyrin and their respective Zn(II), Ni(II), and Cu(II) derivatives on silica gel with n-hexane - chloroform 7:3, and on RP-18 with methanol or methanol - water 9:1 after presaturation of the plates for 30 min. The porphyrins were detected visually.

(About the detection of the content of a type of mushroom of the class of panaeolus.) Pharmazie 40, 431-432 (1985). 100 samples from a panaeolus foenisecii species analyzed by TLC on silica with butanol - water - acetic acid - isopropanol 8:5:2:3; staining with Ehrlich reagent. Psilopsibine not found, but indole derivatives such as tryptamine, 5-oxy-tryptamine, 5-hydroxy-indole acetic acid.

62nd Indian Pharmaceutical Congress Abstract No. F-389 (2010). TLC of amlodipine and telmisartan on silica gel with chloroform – methanol – toluene 10:7:3. The hRf values were 23 and 75 for amlodipine besylate and telmisartan respectively. Quantitative determination by absorbance measurement at 238 nm. The sample was also analysed by spectophotometry and the results by both methods were comparable.

Research Journal Pharm and Tech. 2(4),746-748 (2009). A validated HPTLC method is reported for simultaneous estimation of nebivolol hydrochloride and valsartan in combined dosage form. HPTLC on silica gel with ethyl acetate - methanol - 25 % ammonia. The hRf value of valsartan was 27 and of nebivolol 75.The method was linear in the range of 800-2400 ng/band for nebivolol and 200-1000 ng/band for valsartan. Densitometric quantification at 280 nm. The method was found suitable for routine quality control of the combined dosage form.

62nd Indian Pharmaceutical Congress Abstract No. F-236 (2010). TLC of rupatadine formulation on silica gel with acetonitrile – water – formic acid 50:50:3. The hRf value was 67. Quantitative determination by absorbance measurement at 263 nm. The method was linear in the range of 1-20 µg/band.

J. Liq. Chromatogr. Relat. Technol. 37, 1524-1534 (2014). HPTLC of haloperidol on RP-18 with acetonitrile - water - 1-alkyl-3-methylimidazolium tetrafluoroborate 120:80:3. Quantitative determination by absorbance measurement at 245 nm. The hRF value for haloperidol was 57. Recoveries were in the range of 99.4-106.5 %.

Chromatographia 23, 713-716 (1987). Study of a group of 17 ß-carbolines in reversed phase ion pairing TLC system in order to predict their log p values. TLC data found comparable for log p prediction in HPLC.

J. Planar Chromatogr. 2, 77-79 (1989). HPTLC of urine extracts on silica with ethyl acetate - methanol - NH3 25% 85:10:5. Doping control by post-chromatographic derivatization. Esidrex and similar drugs as well as their metabolites are converted into azo dyes. Drug monitoring by densitometry. Determination limit of the method described is 0.2 mg/L and the sensitivity limit is 0.1 mg/L. The procedure allows the analysis of a large number of samples in a short period of time with minimal operating costs.