J. Planar Chromatogr. 17, 383-387 (2004). TLC of fenbufen, ibuprofen, ketoprofen, diclofenac sodium, mefenamic acid, and tiaprofenic acid on silica gel by ascending and horizontal techniques, and on RP-18 in horizontal chambers. Good separation was achieved on silica gel by horizontal development with chloroform - methanol - 25 % ammonia 67:25:8; reversed phase chromatography on RP-18 with 0.15 mol/L phosphate buffer, pH 5.73 - 10 % CTMA-Br (N-cetyl-N,N,N-trimethylammonium bromide) in methanol 7:13 enabled better separation of the six drugs. Detection under UV light at 254 nm - for ibuprofen detection was best achieved after normal phase chromatography with 20 % aqueous sodium carbonate solution. A simple videodensitometric procedure was developed and validated. RSD for quantitation of fenbufen was 2.44 - 3.10 %.

IPC 56th 2004, Abstract No. GP-3. Simultaneous HPTLC determination of valdecoxib and tizanidine in tablets on silica gel with n-butyl acetate - formic acid - chloroform 7:3:2. Quantitative determination by densitometric scanning at 283 nm. The Rf values of valdecoxib and tizanidine were 0.78 and 0.39 respectively. Linearity range was 200 - 1000 ng/spot and 60 - 300 ng/spot respectively. Mean recovery for both of the compounds was 99.57 – 101.28 %. The method was validated for accuracy, precision, linearity, LOD, and LOQ.

J. Planar Chromatogr. 18, 155-159 (2005). TLC of repaglinide on RP-8 with acetonitrile - phosphate buffer pH 6.0 3:2. Quantitative determination by absorbance measurement at 225 nm. Calibration in the range of 0.6-3.6 µg was linear with a good correlation coefficient (r = 0.998 +/- 0.001). Limits of quantitation and detection were 0.27 µg and 0.08 µg, respectively.

J. Planar Chromatogr. 18, 188-193 (2005). HPTLC of of bezafibrate and ciprofibrate in tablets and capsules on diol phases with hexane - tetrahydrofuran 4:1. Quantitative determination by absorbance measurement at 227 nm and videoscanning at 254 nm. Recovery measured by use of densitometry was 100.3 % (RSD 7.8 %) for bezafibrate and 98.0 % (RSD 6.1 %) for ciprofibrate. Videodensitometry resulted in recovery of 96.2 % (RSD 9.8 %) and 97.8 % (RSD 11.2 %), respectively.

J. AOAC Int. 87, 1319-1322 (2004). TLC of chlorpheniramine and pheniramine maleate in combination with other drugs in pharmaceutical preparations of tablets, syrups, eye and ear drops etc. on silica gel with cyclohexane - chloroform - methanol - diethylamine 9:8:1:2. Detection under UV light at 254 nm and quantitative determination by scanning at 260 nm. Recoveries of CPM and PM were 100.1 +/- 0.8 % and 100.1 +/- 0.9 %, respectively.

Indian Drugs 42 (6), 340-344 (2005). HPTLC of captopril and hydrochlorothiazide in tablets on silica gel with methanol - toluene - ethyl acetate - glacial acetic acid 2:12:6:1. Quantitative determination by absorbance measurement at 219 nm. The Rf value of hydrochlorothiazide was 0.38 and of captopril 0.57. The calibration curve response was 4-14 µg for both drugs. Recovery was determined by standard addition method. The percent recovery by area was found to be 100.25 for captopril and 99.98 for hydrochlorothiazide. The method was suitable for routine quality control of such formulations.

TLC/HPTLC fingerprint profile. Indian Drugs 42 (7), 417-423 (2005). Unripe, powdered fruits of Mimusops elengi Linn. extracted individually and successively with acetone and methanol were evaluated for antimicrobial activity. HPTLC on silica gel with toluene - ethyl acetate - chloroform - acetic acid 35:35:28:2. Detection under UV 254 nm, 366 nm and after spraying with anisaldehyde sulphuric acid reagent for qualitative evaluation for different phyto constituents.

12. Isolation and identification of an isomeric impurity in danazol. Pharm. Research 12, 295-298 (1995). TLC of isodanazol according to The United States Pharmacopoeia XXII, 1990, pp. 379-380 and K. Ferenczi-Fodor, Z. Végh, Z. Pap-Sziklay, J. Planar chromatogr. 6, 198-203 (1993). Ferenczi-Fodor described a validated method for the selective determination of three individual impurities in danazol based on TLC-densitometric measurement at 252 nm. The Rf values of danazol and isodanazol in the TLC systems of USP XXII are 0.29 and 0.33, respectively, while in the system of Ferenczi-Fodor et al. 0.47 and 0.58.