Determination of related substances of theophylline by Ultisil AQ-C18

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ColumnWelch Ultisil ® AQ-C18（4.6×250mm，5μm)
Mobile PhaseAcetate buffer/acetonitrile=93/7
Column
Temperature		30 ℃
Detection
wavelength		272nm
Flow Rate1.0 ml/min
Injection
Volume		20 μL
Note/
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Categories: Applications Info

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