cinnamic aldehyde [ 3-phenylprop-2-enaldehyde,beta-phenylacrolein,cinnamaldehyde,cinnamic aldehyde, (E)-isomer,supercinnamaldehyde,trans-3-phenylprop-2-enaldehyde ] a flavoring agent; an antimutagen but recent studies showed that high doses of cinnamaldehyde in the liver may produce a clastogenic and possibly a promoting effect for hepatocarcinogenesis; RN given