text: * Formaldehyde (methanal)
  * Acetaldehyde (ethanal)
  * Propionaldehyde (propanal)
  * Butyraldehyde (butanal)
  * Isovaleraldehyde 
  * Benzaldehyde (phenylmethanal)
  * Cinnamaldehyde
  * Vanillin
  * Tolualdehyde
  * Furfural
  * Retinaldehyde
  *Glycolaldehyde