What is "galaxolide"

Galaxolide (trade name; also known as Abbalide, Pearlide, Astrolide, Musk 50, Polarlide; common chemical name 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8,-hexamethyl-cyclopenta[g]benzopyran or HHCB) is a synthetic ingredient with a clean sweet musky floral woody odor used in fragrances. It is one of the musk components that perfume and cologne manufacturers use to add a musk odor to their products. Galaxolide was first synthesized in 1965, and used in the late 1960s in some fabric softeners and detergents. High concentrations were also incorporated in fine fragrances.