spermine

A crystalline polyamine compound, C₁₀H₂₆N₄, present in ribosomes and found widely in living tissues along with spermidine. It was originally isolated from semen.

A colorless crystalline basic compound, C₁₀H₂₆N₄, found, in combination, in spermatic fluid and in the heart and liver of calves.

A polyamine, N,N’-bis(3-aminopropyl) butane-1,4-diamine, originally extracted from sperm, that is involved in cellular metabolism