Detection and Quantification of Eurycomanone Levels in Tongkat Ali Herbal Products Norhidayah, Aini ; Vejayan, Jaya ; Yusoff, Mashitah Mohamed Abstract Publication: Journal of Applied Sciences Pub Date: July 2015 DOI: 10.3923/jas.2015.999.1005 Bibcode: 2015JApSc..15..999N