J. Liq. Chromatogr. Relat. Technol. 36, 537-548 (2013). HPTLC of lamotrigine in tablets on silica gel with toluene - acetone - ammonia 6:14:1. Quantitative determination by absorbance measurement at 312 nm. The hRf value of lamotrigine was 55. LOD and LOQ were 0.57 and 1.73 µg/mL, respectively. Intermediate precision was below 1.9 %. Average recovery (by standard addition) was 101.5 %. Comparable results were obtained as compared with a validated HPLC method.

J. Planar Chromatogr. 26, 78-85 (2013). HPTLC of lamivudine (1), tenofovir disoproxil fumarate (2) and efavirenz (3) on silica gel with chloroform - methanol - toluene 30:4:1. Quantitative determination by absorbance measurement at 260 nm. The hRf values of (1), (2) and (3) were 20, 61 and 73, respectively. Linearity was in the range of 400-800 ng/zone for (1) and (2) and 800-1600 ng/zone for (3). Intermediate precision was below 2 %. LOD and LOQ were 180 and 300 ng/zone for (1), 150 and 210 ng/zone for (2) and 300 and 400 ng/zone for (3), respectively.

J. Planar Chromatogr. 25, 133-137 (2012). HPTLC of thiocolchicoside (1) and aceclofenac (2) in combined dosage form on silica gel with methanol - chloroform - water 48:1:1. Quantitative determination by absorbance measurement at 254 nm. The hRf values of (1) and (2) were found to be 70 and 83, respectively. Linearity was in the range of 30-180 ng/band for (1) and 750-4500 ng/band for (2). Recovery was in the range of 98.7-101.2 % for both.

J. of Anhui Coll. of Trad. Chinese Med. 32 (6), 80-82 (2012). Shisanwei Hezhong pills are a herbal TCM formulation for regulating the spleen and stomach and for treating epigastric pain. For quality control, TLC on silica gel 1) for Rhizoma Corydalis and the standard tetrahydropalmatine, with n-hexane – chloroform – methanol 15:8:2, detection by exposing to iodine vapors and viewing in daylight and under UV 366 nm; 2) for White Paeony Root and the standard paeoniflorin, with chloroform – ethyl acetate – methanol – formic acid 200:25:50:1, detection by spraying with 5 % vanillin in sulfuric acid – ethanol 1:10 and heating at 105 °C, viewing in daylight; 3) for Pericarpium Citri Reticulatae and the standard hesperidin, with ethyl acetate – methanol - water 100:17:13, detection by spraying with 2 % aluminium chloride and viewing under UV 366 nm. Quantification of naringin by HPLC.

J. Planar Chromatogr. 26, 202-208 (2013). HPTLC of egg yolk lipid fractions on silica gel with hexane - diethyl ether - formic acid 40:10:1. Detection by srpaying with 10 % copper(II) sulfate in 8 % phosphoric acid. Quantitation by scanning with a flatbed scanner and a gel analysis software. Intermediate/interday/intra-day precision was below 10 % CV (n=6).

J. Planar Chromatogr. 26, 375-378 (2013). TLC of estrone, estradiol, and estriol on silica gel with chloroform - ethyl acetate - acetone 6:2:1. Detecion by dipping into (1) 10 % solution of phosphomolybdic acid (PMA) in methanol, followed by heating at 100 ºC for 10 min; (2) 0.2 % ceric ammonium sulfate in phosphoric acid, followed by heating at 110 ºC for 10 min; (3) 0.2 g manganese(II) chloride in 30 mL water, 30 mL methanol and 2 mL concentrated sulfuric acid, followed by heating at 100-120 ºC for 10-15 min; and (4) 1 g of vanillin in 25 mL of ethanol, 25 mL of distilled water, and 35 mL of ortho-phosphoric acid (85 %), followed by heating at 120-160 ºC for 5-15 min. The lowest detection limit for estrone (75 ng/zone) was achieved using (1) and (3), whereas for estradiol and estriol (both 4.7 ng per zone) by using (2).

J. Planar Chromatogr. 26, 349-353 (2013). TLC of fluvoxamine maleate (1), paroxetine (2) and sertraline in pharmaceuticals on silica gel with 2-propanol - dichloromethane 7:3. Quantitative determination by absorbance measurement at 366 nm. The hRf of (1), (2), and (3) was 44, 22 and 68, respectively. Linearity was between 200 and 1600 ng/zone for both (1) and (2). Limits of detection and quantitation were 75 and 100 ng/zone for (1), and 40 and 80 ng/zone for (2), respectively. Recovery (by standard addition) was found to be 96 - 107 %.

Chinese J. Mod. Drug Appl. 7 (17), 228-229 (2013). Zhuangyao Zhitong Heji compound oral liquid is a herbal TCM preparation to treat deficiency of the kidney and liver, chills and pain of the waist and knee, wind-cold-dampness arthralgia and low back injury. For quality control, TLC on silica gel with n-hexane – ethyl acetate 9:1, detection under UV 366 nm. Identification of Angelica sinensis, Ligusticum chuanxiong and Saposhnikovia divaricata roots by fingerprint comparison with reference drugs.