The Collaborative International Dictionary of English v.0.48:

Cadaverine \Ca*dav"er*ine\, n. Also Cadaverin \Ca*dav"er*in\ .
   [From Cadaver and amine.] (Chem.)
   A sirupy, nontoxic ptomaine, H2N.(CH2)5.NH2 (chemically
   pentamethylene diamine), formed in putrefaction of flesh,
   etc.
   [Webster 1913 Suppl. +PJC]