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- W2354028578 abstract "To establish a gradient elution HPLC method for determination of related substances in aspoxicillin,a column packed with octadecylsiance bonded silica gel(250 mm×4.6 mm,5 μm) was used.A mobile phase of A(0.05 mol/L potassium dihydrogenphosphate,adjusted to pH 5.5)-B(acetonitrile) was adopted,a gradient elution was programmed as follows:0→25 min(97 ∶3→97 ∶3),25→50 min(97 ∶3→80 ∶20),50→65 min(80 ∶20→80 ∶20),65→66 min(80 ∶20→97 ∶3),66→80 min(97 ∶3→97 ∶3);the detection wavelength was set at 280 nm.The column temperature was 30 °C.The flow rate was 1.0 mL/min.Aspoxicillin,the intermediates and the related substances could be well separated.The limit detection and quantitation of aspoxicillin were 4.2 ng and 14.0 ng,respectively.Compared to method reported in Japanese Pharmacopoeia,this modified method is more robust.The validated method can be applied to control the related substances of aspoxicillin." @default.
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- W2354028578 date "2011-01-01" @default.
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- W2354028578 title "Determination of Related Substances in Aspoxicillin by HPLC" @default.
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