Quantitative determination of triptoquinone B in Radix Folium Seu Flos Tripterygii Wilfordii and its tablets by HPLC / 中草药

ABSTRACT

Objective To establish an HPLC method for determination of triptoquinone B in Radix Folium Seu Flos Tripterygii Wilfordii(RFFTW) and its tablets.Methods An external method with HiQ siL KYA-C_(18)(250 mm?4.6 mm,5 ?m) column as fixed phase and methanol-1% acetic acid solution((66∶)34) as mobile phase was adopted.The detective wave length was 254 nm and the flow rate was 1.0 mL/min.Results The linearity range was 6.62—105.9 ?g/mL(r=0.999 9),the average recovery of T.wilfordii from Hunan Province was 97.78%,RSD was 1.09%(n=9),and the average recovery of tablet of T.hypoglaucum was 99.83%,RSD was 1.76%(n=9).Conclusion The method is accurate and sensitive.It is adoptable for quantitative analysis of triptoquinone B in RFFTW and its tablets.