text: High concentrations of aldehydes tend to be very pungent and overwhelming, but low concentrations can evoke a wide range of aromas.
  * Acetaldehyde (ethereal)
  * Hexanal (green, grassy)
  * cis-3-Hexenal (green tomatoes)
  * Furfural (burnt oats)
  * Hexyl cinnamaldehyde
  * Isovaleraldehyde – nutty, fruity, cocoa-like
  * Anisic aldehyde – floral, sweet, hawthorn. It is a crucial component of chocolate, vanilla, strawberry, raspberry, apricot, and others.
  * Cuminaldehyde (4-propan-2-ylbenzaldehyde) – Spicy, cumin-like, green