cinnamyl

from The Collaborative International Dictionary of English v.0.48

Styryl \Sty"ryl\, n. [Styrax + -yl.] (Chem.)
   A hypothetical radical found in certain derivatives of
   styrolene and cinnamic acid; -- called also {cinnyl}, or
   {cinnamyl}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Cinnamyl \Cin"na*myl\, n. [Cinnamic + -yl.] (Chem.)
   The hypothetical radical, {(C6H5.C2H2)2C}, of cinnamic
   compounds. [Formerly written also {cinnamule}.]
   [1913 Webster]

[email protected]