𝔖 Bobbio Scriptorium
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Studies on standardization of folium strobilanthis, radix strobilanthis and their preparations

✍ Scribed by Li Ling; Dong Tong-Yi; Li Xiu-Lu; Qiao Chuan-Zhuo

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
190 KB
Volume
8
Category
Article
ISSN
0269-3879

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✦ Synopsis

Abstract

Determination of 4(3H)‐quinazolinone, a newly found antiviral and immunopatentiating constituent was proposed as a method of evaluating the quality of two antiviral Chinese herbal drugs Daqingye (Folium Strobilanthis) and Banlangen(Radix Strobilanthis) and their preparations (‘Antipyretic and common cold granules’, ‘Banlangen granules’). An HPLC method for determining the content of 4(3H)‐quinazolinone was established with satisfactory results. The method showed good linearity (r = 0.9998, n = 5) in the range of 0.25–50 μg/mL of 4(3H)‐quinazolinone, the average recovery was above 99% with RSD < 0.78% (n = 3).

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