ABSTRACT
OBJECTIVE:A method was established for determining the content of estriol in estriol suppositories.METHO_ DS:Using three wavelength spectrophotometry.RESULTS:The detecting wavelengths were296nm,281nm and276nm;the average recovery rate of estriol was99.2%(RSD=0.5,n=6).CONCLUSION:The method is accurate,quick and suitable for detecting estriol in intermediate material of estriol suppositories.
ABSTRACT
Synergic berberine capsule contains berberine hydro chloride and trimethoprim (TMP). Berberine hydrochloride was directly determined at 349. 6nm wavelength by using ultra-violet spectrophotometry without separation. trimethoprim was determined by using three-wavelength spectrophotometry, respectively. This method is with simplicity, rapidity and high recovery. Its results are basically the same as that of the method used by Shaanxi Provincial Pharmacopiea.