Patent ID: 7250154

Claim:
A radio-opaque dihydroxy compound substituted with at least one bromine or iodine atom, having the structure: wherein R 5 and R 6 are each independently selected from the group consisting of H, Br, I and straight and branched alkyl groups having up to 18 carbon atoms, R 0 is selected from the group consisting of —CH═CH—, —CHJ 1 -CHJ 2 - and (—CH 2 —) m and R 15 is selected from the group consisting of —CH═CH—, (—CH 2 —) c and —CHJ 1 -CHJ 2 -, wherein J 1 and J 2 are independently Br or I; c and m are independently between 0 and 8, inclusive; each X 2 is independently I or Br; Y2 is 1 or 2; and Z is selected from the group consisting of hydrogen, a free carboxylic acid group or an ester or amide thereof, said ester or amide being selected from the group consisting of straight and branched alkyl and alkylaryl groups containing up to 18 carbon atoms and esters and amides of biologically and pharmaceutically active compounds.