RESUMEN
Objective To establish a sensitive and specific LC-MS/MS method for measurement of notoginsenoside R1, ginsenoside Rg1, ginsenoside Re, ginsenoside Rb1, ginsenoside Rd, tanshinone Ⅰ, astragaloside Ⅳ and harpagosidein of Fufang Xueshuantong Capsule in rat plasma. Methods The HPLC separation was performed on Thermo Hypersil GOLD column (2.1 mm× 100mm, 5 μm) at 30 ℃, injecting 10 μL and using acetonitrile-water (0.1% formic acid) as the mobile phrase (B was acetonitrile, A was 0.1%formic acid;0-10 min, 25%-55%B;10-20 min, 55%-70%B) with the flow rate of 0.2 mL/min. Detection was performed on a tandem quadrapole mass spectrometer using positive electrospray ionization, SRM scan mode. Results The eight compounds showed good linearity in wide ranges (notoginsenoside R1 1.00-800 ng/mL, ginsenoside Rg1 0.950-760 ng/mL, ginsenoside Re 1.44-1440 ng/mL, ginsenoside Rb1 1.33-1330 ng/mL, ginsenoside Rd 9.90-990 ng/mL, harpagosidein 1.01-1010 ng/mL, astragaloside Ⅳ 1.16-928 ng/mL, tanshinone Ⅰ 10.0-800 ng/mL). In addition, the accuracy and recovery were around 85%-115%and 50%-70%. The RSD of intra and inter day precision were lower than 15%. Conclusion The method is specific, rapid and sensitive. Therefore, it can be applied to pharmacokinetic study of eight effective compounds in Fufang Xueshuantong Capsule.