title: [Quantitative analysis of 4(3)-quinazolinedione in 4 "daqingye", leave of Isatis indigotica, Baphicacanthus cusia, Polygonum tinctorium and Clerodendron cyrtophyllum].
abstract: Using 4(3)-quinazolinedione, the active constituent of "Daqingye", as the quality control criteria, 4 samples of the herbal drug collected from Isatis indigotica, Baphicacanthus cusia, Polygonum tinctorium and Clerodendron cyrtophyllum were comparetively analyzed by RP-HPLC. The results showed that the average 4(3)-quinazolinedione contents (microgram/g) were 30.7, 7.2, 4.4 and 27.5 respectively. This method was proved to be quick, simple and reproducible, and provided a reliable basis for the quality control and evaluation of Chinese Traditional Drug "Daqingye".
authors.affiliation: Nanjing University of TCM, 210029.
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: K
authors.initials: K
authors.lastname: Fang
authors.forename: J
authors.initials: J
authors.lastname: Pan
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D032409:Clerodendrum / Q000737:chemistry*; D004340:Drug Contamination; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D031219:Isatis / Q000737:chemistry* / Q000145:classification; D018515:Plant Leaves / Q000737:chemistry; D028502:Polygonum / Q000737:chemistry*; D011799:Quinazolines / Q000032:analysis*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D004365:Drugs, Chinese Herbal; D011799:Quinazolines