Cadaverine is a foul-smelling molecule produced by protein hydrolysis during putrefaction of animal tissue. Cadaverine is a toxic diamine with the formula NH2 (CH2)5 NH2, which is similar to putrescine. Cadaverine is also known by the names 1,5-pentanediamine and pentamethylenediamine. Cadaverine is the decarboxylation product of the amino acid lysine; however, this diamine is not purely associated with putrefaction. It is also produced in small quantities by living beings. It is partially responsible for the distinctive odors of urine and semen. Molecular formula C5 H14 N2. Molar mass 102.178 g/mol. Carbon: magenta; Hydrogen: cyan; Nitrogen: blue.