Research Article
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