The essential oil obtained from the leaves of Piper affinis hispidinervum C
. DC was analysed by CC-MS. Sixteen substances were identified, correspondi
ng to 98.9% of the oil. The major component (74.3%) was sarisan (1 -allyl-2
-methoxy-4,5-methylenedioxybenze), identified by NMR spectroscopy. Safrole
(18.4%) was also found in the oil. Copyright (C) 2001 John Wiley & Sons, Lt
d.