The molecule is an iodoamino acid that is L-histidine in which the imidazole ring is substituted by iodine at positions 2- and 5(4). It is an iodoamino acid, a non-proteinogenic L-alpha-amino acid and a L-histidine derivative.
(2S)-2-amino-3-(2,4-diiodo-1H-imidazol-5-yl)propanoic acid