http:/www.springerlink.com/(2ffhue45ydfr3aafzneqp145 )app/home/journal. asp? referrer=parent&backto=linking ublicationresults. 1: 106464.1 Chemistry of Natural compounds CHEMISTRY NATURAL COMPOUNDS CHEM NAT COMPD 影响因子:0.492 AN②MsAA Free sample background from www.powerpointbackgrounds.com Slide 8 Chemistry of Natural Compounds CHEM NAT COMPD 影响因子：0.492 http://www.springerlink.com/(2ffhue45ydfr3aafzneqp145 )/app/home/journal.asp?referrer=parent&backto=linkingp ublicationresults,1:106464,1