Musk compounds are a class of aromatic substances commonly used in the fragrance industry. They are known for their strong, pleasant scent and are used to impart a long-lasting aroma in perfumes, colognes, and personal care products. Traditionally, musk was derived from the glandular secretions of the musk deer, but due to ethical and sustainability concerns, most musks used today are synthetically produced. These include synthetic musks like nitro musks, polycyclic musks, and macrocyclic musks.