[Determination of berberine in xianglian wan and zuojin wan using first derivative spectrometry].
Wang
Y Z
YZ
D001599:Berberine / Q000032:analysis*; D001600:Berberine Alkaloids / Q000032:analysis*; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
D001600:Berberine Alkaloids; D004365:Drugs, Chinese Herbal; D001599:Berberine