Structural analysis of an unknown impurity in doxofylline by NMR spectroscopy and liquid chromatography-mass spectrometry
SUN Huang1,2, LOU Zhi-hong2, FU Cui-ying1,2, BAI Zheng-zhong2, DING Li1
Chinese Journal of Pharmaceutical Analysis ›› 2013, Vol. 33 ›› Issue (3) : 443-446.
Structural analysis of an unknown impurity in doxofylline by NMR spectroscopy and liquid chromatography-mass spectrometry
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