Ind. J. Pharm. Res. 6 (4), 205-207 (2007). HPTLC of itraconazole on silica gel with toluene - acetone - triethylamine 30:30:1. Detection at 270 nm. The hRf value of itraconazole was 62. Linearity was between 0.2 and 0.6 µg. The market formulation contained itraconazole amounts of 99.6 % via peak height and 100.2 via peak area, respectively. Recovery (by standard addition) was 99.4 % and 100.3 % respectively.

Anal. Chim. Acta 227, 203-209 (1989). HPTLC of reduced glutathione on silica with diisopropyl ether – methanol – water – acetic acid 9:8:2:1 after treatment with trichloroacetic acid and derivatization with ammonium 7-fluorobenzo-2-oxa-1,3-diazole- 4-sulphonate. Detection under UV at 365 nm. Detection limit, in the low nanogram per spot range.

60th Indian Pharmaceutical Congress PA-205, (2008). HPTLC of diacerein on silica gel with ethyl acetate - n-hexane - acetic acid 120:19:1. The hRf value was 32. Quantitative determination by absorbance measurement at 258 nm. The method was linear in the range of 50-250 ng/spot. The recovery was 96-103 %.

Chinese J. Pharm. Anal. (Yaowu Fenxi Zazhi) 12, 211-213 (1992). TLC of mexiletine on silica with chloroform - methanol 46:5. Detection by spraying with 0.1% fluorescamine in acetone. Quantification by fluoro densitometry at

Chem. 18(1), 667-672 (2006). HPTLC of mefenamic acid and drotaverine HCl in tablets on silica gel with methanol - toluene - triethylamine 10:75:2. Quantitative determination by absorbance measurement at 241 nm. The hRf values were 31 and 47 for mefenamic acid and drotaverine HCl, respectively. The method was validated in terms of accuracy, precision, specificity, ruggedness. Linearity was between 3800 and 8400 ng for mefenamic acid and 1200 and 2700 ng for drotaverine HCl. The recovery (by standard addition method) was in the range of 99.1-100.9 % for both compounds. The method could be used for routine analysis of these compounds and their combined dosage form.

J. Chromatogr. 643, 389-398 (1993). Review with 107 references on the determination of volatile solvents and their metabolites in biological materials by planar chromatography as well as GC and HPLC.

Asian J. Chem. 19(4), 2955-2960 (2007). TLC of esomeprazole and domperidone on silica gel with chloroform - acetonitrile - ammonia 20:40:1. Quantitative determination by absorbance measurement at 222 nm. The hRf value was 76 for esomeprazole and 89 for domperidone. Linearity was between 600 and 1400 µg/mL for domperidone and 1200 and 2800 µg/mL for esomeprazole. Recovery (by standard addition method) was 99.6 %. The proposed method is precise, accurate and can be used for routine analysis of esomeprazole and domperidone in tablets.

(Application of thin layer chromatography in the clinical laboratory.) Dünnschicht- Chromatographie InCom Sonderband 1996, 14-30. TLC of amino acids, carbohydrates (monosaccharides, oligosaccharides-glucosaminoglycanes), lipids, catecholamine and serotonin metabolites, porphyrins, estriol, cortisol, TDM (antiepileptics, theophylline), vitamins. TDM = Therapeutic Drug Monitoring.