Aldehyde C-20 is used in all types of perfumes, for fruity notes, tutti frutti, red fruits, banana, ambery, and chypre notes. Allows to nuance rosy, orris root, and violet notes. Aldehyde C20 is a synthetic chemical that is used in perfumery for its fruity and floral aroma. It has a raspberry scent, with nuances of rosy, orris root, and violet notes. It is also known as Ethyl para-Methyl-beta-Phenylglycidate or Raspberry aldehyde.