• ethanol
  • In humans, sequencing of the ADH1B gene (responsible for production of an alcohol dehydrogenase polypeptide) shows two variants, in which there is an SNP (single nucleotide polymorphism) that leads to either a Histidine or an Arginine residue in the enzyme catalyzing the conversion of ethanol into acetaldehyde. (wikipedia.org)
  • Before 1962, ethanol and acetylene were the major sources of acetaldehyde. (wikipedia.org)
  • enol
  • IUPAC name: ethenol): CH3CH=O ⇌ CH2=CHOH ∆H298,g = +42.7 kJ/mol The equilibrium constant is 6×10−7 at room temperature, thus that the relative amount of the enol form in a sample of acetaldehyde is very small. (wikipedia.org)
  • At room temperature, acetaldehyde (CH3CH=O) is more stable than vinyl alcohol (CH2=CHOH) by 42.7 kJ/mol: Overall the keto-enol tautomerization occurs slowly but is catalyzed by acids. (wikipedia.org)