Tetramine is a typical name for a chemical containing four amine groups. Some examples are:
Triethylenetetramine ("trien"), 1,4,7,10-Tetraazadecane 1,4,8,11-Tetraazaundecane Hexamethylenetetramine (hexamine) All of the abive are examples of a polyamine. Tetramethylenedisulfotetramine (TETS), a rodenticide banned in most countries
Tetramine is also used as a synonym for the tetramethylammonium cation.