Facile Isolation and Purification of Thailandine, a Biologically Active Oxoaporphine Alkaloid, from Stephania venosa Leaves using Ion-pair Liquid-liquid Extraction

Nitirat Chimnoi, Nisachon Khunnawutmanotham, Pitchayada Feungfuloy, Kittima Chatrewongwan and Supanna Techasakul

Research Journal of Medicinal Plants 7 ( 1 ): 68 - 76 , 2013