J. Planar Chromatogr. 19, 42-47 (2006). TLC of 14C metabolites of denaverin (2,2-diphenyl-2-(2-ethylbutoxy)acetic acid-2-(dimethylamino)-ethyl ester) on silica gel with chloroform - cyclohexane - methanol - ammonia 100:70:30:3. Detection with autoradiographic films after exposure for one week. Quantitation after scraping the adsorbent from the plate followed by determination of radioactivity by LSC.

59th Indian Pharmaceutical Congress C-66, 240, (2007). Evaluation of Arjunakhseerpak and Arjunaristha, two ayurvedic formulations used for cardiovascular system, which contain Terminalia arjuna as the main ingredient. Simultaneous HPTLC of arjungenin and arjunolic acid from Terminalia arjuna on silica gel with toluene - ethyl acetate - acetic acid 10:10:1. Detection by spraying with 10 % sulphuric acid followed by heating. Densitometric evaluation at 366 nm. The UV spectra of the sandards arjungenin and arjunolic acid was found to be similar to that of arjungenin and arjunolic acid in the formulation. The method was found suitable for standardization of arjuna formulations.

Indian Drugs 45(8), 663-666 (2008). HPTLC of geranial and luteolin from leaves of Cymbopogon citratus on silica gel with toluene - ethyl acetate 9:1 for geranial and toluene - ethyl acetate - formic acid 10:7:1 for luteolin. Densitometric evaluation at 200 nm (geranial) and 254 nm (luteolin). Alcoholic extracts of the plant leaves were found to contain 1.34 % and 1.49 % of geranial and luteolin respectively.

Chinese J. Phram. Anal. 27 (9), 1311-1313 (2007). TLC of drug extracts on silica gel with trichloromethane – methanol – water 12:8:1. Detection by spraying with 5 % vanillin – sulfuric acid reagent and evaluation in daylight and under UV light.

J. Chromatogr. Sci. 48, 68-75 (2010). TLC of cefaclor, cefadroxil, cefalexin and cefradine on silica gel with ethyl acetate - methanol - water in different ratios. The studied drugs had hRf values between 40 and 60. Detection of blue to violet colored zones after spraying with ninhydrin reagent. Quantification by densitometry. Linearity was in the range of 2-10 µg/zone with correlation coefficients ranging from 0.9990 to 0.9996 and determination coefficients from 0.9986 to 0.9992 for all studied drugs. The limits of detection and quantification for all studied drugs were between 90 to 230 ng/zone and 270 to 840 ng/zone, respectively.

Acta Chromatographica 22 (3), 419-431 (2010), DOI:10.1556/AChrom.22.2010.3.6. Simultaneous analysis of tamsulosin hydrochloride and dutasteride in tablet formulations by HPTLC on silica gel with toluene – methanol - triethylamine 18:3:2. Quantification by densitometry at 280 nm over the concentration range 200–2000 ng/band for both drugs. The recovery was 99.7 % and 100.1 % for tamsulosin hydrochloride and dutasteride, respectively.

J. Planar Chromatogr. 27, 377-384 (2014). HPTLC of metformin in urine on silica gel with chloroform – methanol – ammonia 27 % 25:25:1. Quantitative determination by absorbance measurement at 237 nm. The hRF value of metformin was 25. Linearity was between 200 and 2000 ng/zone. The intermediate inter-day and intra-day precisions were below 9 % (n=5). The LOD and LOQ were 40 and 120 ng/zone, respectively. Recoveries were in the range of 92-94 %.

J. Chromatogr. Sci. 54 (9), 1661-1669 (2016). Development of two sensitive and accurate stability-indicating chromatographic methods for the determination of rafoxanide (RFX): 1) by TLC on silica gel with chloroform – ethyl acetate – toluene – ammonia 50:40:3:1, determination by densitometry at 280 nm; 2) by UPLC. Identification of the degradation products by mass spectrometry and IR spectroscopy. Both proposed methods proved to be accurate, robust, specific and suitable for application as stability-indicating methods for routine analysis of RFX in quality control laboratories.