Determination of related substances in Compound aminophenazone and barbital injection by HPLC
OBJECTIVE To detect the related substances in Compound aminophenazone and barbital injection by HPLC.METHODS The test was carried out using principal component self control method with calibration factors.Waters Sunfire C18 column was used.Elute with 0.01 mol·L-1 ammonium acetate buffer(pH7.7)-acetonitrile(85∶15),flow rate of 1.2 mL· min-1,column temperature of 35 ℃,detection wavelength of 228 nm,and injection volume of 10 μL.RESULTS Impurity A,impurity B,antipyrine,and aminopyrine showed good linear relationship within their respective concentration ranges,with quantification limits of 0.050,0.093,0.014,and 0.041 mg·L-1,respectively.The average recovery rates of impurities A and B were 101.5%and 103.7%,with RSDs of 2.90%and 4.40%.CONCLUSION This method is simple,rapid.It can be used for the quantitative determination of related substances in compound Aminophenazone and barbital injection.
Compound aminophenazone and barbital injectionRelated substancesHPLCPrincipal component self-control method with correction factorContent determination