J. Chromatogr. B 667, 315-320 (1995). TLC on silica with 1) chloroform, 2) chloroform - methanol - acetic acid 150:25:4. Detection under 365 nm. Quantification by densitometry at 365 nm (fluorescence).

Arzneim.-Forsch./Drug Res. 48, 455-460 (1998). TLC of deramciclane fumarate ((1R,2S,4R)-(-)-N,N-dimethyl-2-[(1,7,7-trimethyl-2-phenylbicyclo[2,2,1]hept-2-yl)oxy]ethane amine-2-(E)-butendioate (1:1)) and [3H]-camphor-3-deramciclane on silica gel with butanol - acetic acid - water 4:1:1, ethanol - NH3 9:1 or ethyl acetate - triethylamine 25:1. Detection of 3H-radioactivity by radioscanning.

59th Indian Pharmaceutical Congress C-100, 248, (2007). An HPTLC method has been developed for the estimation of flavonoids tannin and saponin in Caesalpinia bonduc. The dried powdered leaves of the plant were extracted with methanol and used for evaluation. HPTLC on silica gel with ethyl acetate - formic acid - glacial acetic acid - water 20:2:2:5 for flavonoids, chloroform - glacial acetic acid - methanol - water 16:8:3:2 for saponin, and ethyl acetate - toluene - formic acid 6:6:1 for tannin. Detection by spraying with 5 % methanolic sulphuric acid for saponin, 5 % alcoholic aluminium chloride solution for flavonoids, and 5 % ferric chloride solution for tannin. Densitometric evaluation at 254 nm and 366 nm.

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 %.

Acta Chromatographica 21 (1), 83-93 (2009). HPTLC of quetiapine fumarate on silica gel with toluene - methanol 4:1. The hRf value of quetiapine fumarate was 37. Quantitative determination by absorbance measurement at 254 nm. There was no chromatographic interference from tablet excipients. The drug is susceptible to treatment with acid and alkaline hydrolysis, oxidation, and photodegradation. The method was able to separate the degradation products from the pure drug, it can be used for stability tests.

Chinese J. Pharm. Anal. 28 (1), 20-23 (2008). TLC of TCM drug extracts on silica gel with toluene – ethyl acetate – methanol – isopropanol – ammonia 12:6:3:3:1. Detection under UV light. The method is suitable for quality control of Baozhi pills.

Journal of Pharmaceutical Research 9(2), 60-62 (2010). TLC on silica gel with chloroform - ethyl acetate - methanol - ammonia 20:20:10:1 with chamber saturation for 30 min. Densitometric evaluation at 232 nm. The method was linear in the range of 100-800 ng/band for amlodipine, 400-2400 ng/band for hydrochlorothiazide and 1000-8000 ng/band for amlodipine. The average recovery was 99.1-100.4 % for all three compounds. The method was suitable for stability studies (stress conditions: acid, base, thermal, UV).

Acta Chromatographica 22 (4), 549-567 (2010). HPTLC of risperidone on silica gel with methanol - ethyl acetate 4:1. The hRf value of risperidone was 34. Quantitative evaluation by absorbance measurement at 285 nm. The linearity was in the range of 100-600 ng/band (r=0.9996), the LOD was 22 ng/band and the LOQ was 68 ng/band. The method was suitable for selective analysis of risperidone and was successfully used for estimation of the equilibrium solubility of risperidone, and for quantification of risperidone as the bulk drug in a commercially available preparation, in in-house developed mucoadhesive microemulsion formulations, and in solution.