Purification of amide alkaloids from Piper longum L. using preparative two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography

Kuiyong Li, Wenya Zhu, Qing Fu, Yanxiong Ke, Yu Jin, Xinmiao Liang
  • The Analyst, January 2013, Royal Society of Chemistry
  • DOI: 10.1039/c3an00016h
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