J. Planar Chromatogr. 20, 261-265 (2007). TLC of 5 anti-diabetic thiazolidinediones on RP-18 with binary mobile phases containing water and the organic modifier acetone, 1,4-dioxane, or methanol. Linear relationships were obtained between the Rm values of the compounds and the concentration of organic modifier in the mobile phase. TLC of ciglitazone, pioglitazone hydrochloride, darglitazone, englitazone, and rosiglitazone maleate against nine compounds of known lipophilicity (e. g. izatine, 2,6-dichloroacetanilide, 2,4-dichloroacetanilide, 4-nitrophenol etc.). Plates were developed in horizontal chambers. Visualization under UV light at 254 nm.

J. Planar Chromatogr. 20, 331-334 (2007). HPTLC of tizoxanide (with nitazoxanide as internal standard) on silica gel prewashed with methanol in a twin-trough chamber with toluene - ethyl acetate - acetic acid 62:134:4. UV detection and quantitation at 313 nm for the internal standard and at 410 nm for tizoxanide.

J. Planar Chromatogr. 20, 477-481 (2007). HPTLC of telmisartan (4’-{[4-methyl-6-(1-methylbenzimidazol-2-yl)-2-propylbenzimidazol-1-yl]methyl}biphenyl-2-carboxylic acid) on silica gel with chloroform - methanol 43:7 in a twin-trough chamber with chamber saturation for 25 min. Densitometric scanning in absorbance mode at 297 nm.

Chromatographia 66 (9-10), 801-804 (2007). HPTLC of withaferin A and withanolide A in Withania somnifera methanolic extract from different plant parts (leaf, root, stem and fruit) and of two morphotypes, on silica gel with toluene - ethyl acetate - formic acid 5:5:1. Quantification by densitometry in absorption mode at 530 nm. Linearity was between 200 and 3200 ng for both withaferin A and withanolide A. The average recovery of withaferin A and withanolide A was 96.0 and 96.7 %.

Whole Plant Powder by HPTLC. Chromatographia 65 (11-12), 767-769 (2007). HPTLC of rutin in the whole plant powder of Amaranthus spinosus Linn. on silica gel with ethyl acetate - formic acid - methanol - distilled water 100:9:11:17. Quantification by densitometry at 363 nm. Linearity was between 10 and 60 µg/mL for rutin. The concentration of rutin in the whole plant powder was found to be 0.15 %.

CBS 100, 6-7 (2008). HPTLC of the alkaloid deoxypeganine (from Peganum harmala) and bromination reaction products on silica gel over 60 mm with chloroform - methanol - acetone - cyclohexane 5:1:5:5 for Merck phases and 4:1:4:4 for Whatman phases. Quantitative determination by absorbance measurement at 254 nm.

CBS 100, 2-5 (2008). HPTLC of photodegraded UV filters and sunscreen on silica gel LiChrospher prewashed with methanol. AMD 2 development of UV filter standards photodegradation products with diisopropylether - n-hexane in 6 steps over 50 mm without preconditioning, and of sunscreen samples photodegradation products with t-butylmethylether - n-hexane in 7 steps over 50 mm with preconditioning, followed by drying at 120 °C for 30 min. Detection at 254 and 366 nm, followed by biodetection via dipping the plate in a Vibrio fischeri solution for 1 s and evaluation with the Bioluminizer (exposure time 55 s). Densitometric evaluation by multi-wavelength scan at 200-400 nm.

Ind. J. Pharm. Sci. 69 (5), 684-686 (2007). HPTLC of lansoprazole and domperidone in tablet formulations on silica gel with n-butanol - acetic acid - water 186:5:10. Densitometric analysis in absorbance mode at 288 nm. The calibration covered the range of 100 to 500 ng/spot for both substances. The hRf value of lansoprazole and domperidone was 78 and 21, respectively. The limit of detection and quantification for lansoprazole was 10 and 40 ng/spot and for domperidone 30 and 65 ng/spot, respectively. The method is suitable for routine quality control.