Ambergris, which comes from some species of sperm whale, is one of the most valuable raw materials in perfumery. It’s rare, and the fragrance it exudes is just as rare. In perfumes ambergris is used as a fixative and its presence can be best described as marine, animalic and sweet. Speaking of chemical content, the three major components isolated from ambergris are triterpene alcohol ambrein, the chief active ingredient, as well as epicoprostanol and coprostanone.