Homogentisic acid is a phenolic acid and intermediate in the catabolism of aromatic amino acids, including phenylalanine and tyrosine. It is formed in excess during alkaptonuria, whereas excess deposition of homogentisic acid in connective tissues produces ochronosis.1
1.Mistry, J.B., Bukhari, M., and Taylor, A.M.AlkaptonuriaRare Dis.1:e27475(2013)
















