Purification of the seven tetranortriterpenoids in neem (Azadirachta indica) seed by counter-current chromatography sequentially followed by isocratic preparative reversed-phase high-performance liquid chromatography

Júlio César T. Silva, Gulab N. Jham, R. D. L. Oliveira, Leslie Brown

Journal of Chromatography A · 2007 · 37 citations · 15 references

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