Determination of related substances in Terlipressin for injection by HPLC
Objective To establish an HPLC method for determination of substances in Terlipressin for injection.Methods Agilent Poroshell 120EC-C18 column(150 mm×4.6 mm,2.7 μm)was used.Mobile phase A was potassium dihydrogen phosphate buffer-acetonitrile(90:10),mobile phase B was potassium dihydrogen phosphate buffer-acetonitrile(60:40),and gradient elution was carried on.Detection wavelength was set at 210 nm,volume flow rate was 0.7 mL/min,and injection volume was 20 μL.Column temperature was 35℃.The related substances were calculated using the principal component reference standard external standard method.Results The linear range of impurities L,K,G,I,D,H,E,F,Y,P,M,B,T,J,and N was 0.04-40.80 μg/mL.The average recovery was 99.46%,98.35%,98.24%,99.15%,100.01%,99.34%,99.56%,99.42%,98.79%,98.64%,99.16%,98.22%,99.31%,98.11%,and 99.38%,respectively,and the RSD value was 0.98%,1.23%,1.45%,0.85%,1.21%,1.09%,1.16%,0.94%,1.25%,0.79%,1.42%,0.92%,0.88%,1.72%,and 1.26%.Conclusion The established method is accurate and highly specific,and can be used for quality control of related substances in Terlipressin for injection.
Terlipressin for injectionrelated substanceimpurity Limpurity KHPLC