The present invention relates to a class of compounds and to diagnostic compositions containing such compounds where the compounds are iodine containing compounds. More specifically the iodine containing compounds are chemical compounds containing two linked iodinated phenyl groups of the general formula and salts or optical active isomers thereof, wherein each of R
1
, R
2
and R
3
independently are the same or different and denote a hydrogen atom or a C
1
to C
4
straight of branched alkyl group; each R
4
independently are the same or different and denote C
1
to C
6
straight of branched alkyl moieties substituted by up to 6 —OH groups; and each R
5
independently are the same or different and denote C
1
to C
6
straight or branched alkyl moieties substituted by up to 6 —OH groups. The invention also relates to the use of such diagnostic compositions as contrast agents in diagnostic imaging and in particular in X-ray imaging, and to contrast media containing such compounds.
                            本发明涉及一类化合物和含有这些化合物的诊断组合物,其中这些化合物是含有
碘的化合物。具体而言,这些含
碘化合物是
化学化合物,包含两个连接的
碘化苯基的一般式和其盐或光学活性异构体,其中每个R1、R2和R3独立地相同或不同,并表示氢原子或C1到C4的直链或支链烷基;每个R4独立地相同或不同,并表示C1到C6的直链或支链烷基基团,被最多6个-OH基取代;每个R5独立地相同或不同,并表示C1到C6的直链或支链烷基基团,被最多6个-OH基取代。本发明还涉及将这样的诊断组合物用作诊断成像中的对比剂,特别是在X射线成像中,并涉及包含这些化合物的对比介质。