Chinese J. Trad. Patent Med. (Zhongchengyao) 26 (7), 535 - 538 (2004). TLC of Huanglong Ganzhixiao granule extracts on silica gel with 1) chloroform - butanone - methanol - formic acid - water 22:20:11:2:2; 2) chloroform - methanol - water 13:7:2; 3) chloroform - methanol 99:1; 4) petroleum ether (60 - 90 ºC) - ethyl acetate 5:1. Detection 1) by spraying with 10 % AlCl3 in ethanol and under UV 365 nm; 2) by spraying with 10 % H2SO4 in ethanol followed by heating at 105 ºC, and under UV 365 nm; 3) by spraying with 10 % phosphomolybdic acid in ethanol followed by heating at 105 ºC. Identification by fingerprint technique. Quantification of loureirin B by HPLC. Discussion of procedure optimization for individual component drug and of using the procedures in the quality control of the medicine.

Chinese J. Trad. Patent Med. (Zhongchengyao) 26 (8), Appendix 16-18 (2004). Study of the identification of Shenbao capsules by TLC, in addition to microscopy and chemical methods. TLC of Shenbao capsule extracts on silica gel with 1) the lower phase of chloroform - ethyl acetate - methanol - water 15:40:22:10; 2) toluene - methanol 4:1. Detection 1) by spraying with 10 % H2SO4 in ethanol followed by heating at 105 ºC; 2) under UV light. Identification by fingerprint technique. Combination of the procedure with microscopy and chemical methods allows identification of all drug ingredients.

IPC 56th 2004, Abstract No. G-20. Simultaneous HPTLC determination of loratadine and ambroxol in combined dosage form on silica gel with n-hexane - dichloromethane - triethanolamine 11:8:1.The Rf value of loratadine and ambroxal was found to be 0.40 and 0.16 respectively. Quantitative evaluation by scanning at 254 nm.The method was linear in the range of 0.2 -1 mg/spot for loratadine and 1.2 - 6 mg/spot for ambroxol with recovery of 98.2 - 98.5 %. The method was validated for accuracy, precision, linearity, specificity, LOD, and LOQ.

Part I. J. Planar Chromatogr. 17, 275-279 (2004). HPTLC of nicotinic acid and selected derivatives (methyl nicotinate, ethyl nicotinate, isopropyl nicotinate, butyl nicotinate, hexyl nicotinate, benzyl nicotinate, nicotinamide, N-methyl nicotinamide) on RP-18 with methanol - water in different volume proportions after chamber saturation for 30 min. Detection under UV light at 254 nm. Investigation of the lipophilicity by TLC and use of the data for quantitative structure-activity relationships.

Chinese J. Trad. Pat. Med. (Zhongchengyao) 26 (9), App.14-16 (2004). TLC on silica gel with 1) toluene - ethyl acetate - formic acid 25:20:4; 2) ethyl acetate - methanol - water 100:17:13. Detection 1) by spraying with diazotized para-nitroaniline solution; 2) by spraying with 5 % AlCl3 in ethanol and under UV 365 nm. Identification by fingerprint technique. Quantification of hesperidin by HPLC.

Abstract G-35, IPC (2005). HPTLC of etoricoxib in tablets on silica gel with n-hexane - ethyl acetate 1:3. Quantitative determination by absorbance measurement at 237 nm. The method was linear within the range of 100-500 ng/spot with a recovery rate of 97.4 %. LOD was 40 ng/spot and LOQ 100 ng/spot.

and its compound preparations by thin-layer chromatography) (Chinese). Chinese J. Chromatogr. (Sepu) 23 (2), 216-217 (2005). TLC on silica gel by 2-fold development with cyclohexane - ethyl acetate 10:1 followed by cyclohexane - ethyl acetate 2:1. Detection by spraying with H2SO4 - ethanol 1:10 followed by heating at 105 ºC for 5 min. Visualization under UV 365 nm.

J. Chinese Trad. Patent Med. (Zhongchengyao) 27 (3), 385-388 (2005). TLC of the extracts on silica gel with 1) ethyl acetate - acetone - formic acid - water 5:5:1:1; 2) chloroform - ethyl acetate - methanol - water 8:20:11:5; 3) n-hexane - ethyl acetate 9:1. Detection by spraying with 1) 5 % H2SO4 and 2) 10 % H2SO4, both in ethanol followed by heating at 105 ºC until the spots are visualized; 3) under UV 365 nm. Identification by comparison with the standard. Quantification of geniposide by HPLC. The analysis results for three real life samples are given.