The molecule is an L-histidine derivative in which the alpha-amino nitrogen of the amino acid has entered into amide formation with acetic acid and the tele- nitrogen carries a 1,4-dihydroxynonan-3-yl substituent. It has been synthesised by reaction of (E)-4-hydroxynon-2-enal (HNE) with N-acetyl-L-histidine, the tele nitrogen of histidine reacting with the double bond function of HNE via formation of a Michael adduct.
(2S)-2-acetamido-3-[1-(1,4-dihydroxynonan-3-yl)imidazol-4-yl]propanoic acid