The invention provides iodinated bis phenyl compounds, useful as X-ray contrast agents, of formula (I) (wherein each C.sub.6 R.sub.5 moiety may be the same or different; each denotes a hydrogen or iodine atom or a group M, two or three non-adjacent R groups on each C.sub.6 R.sub.5 moiety denoting iodine atoms and one, two or three R groups on each C.sub.6 R.sub.5 moiety denoting M groups; X denotes a group providing a 1, 2 or 3 atom chain linking the two C.sub.6 R.sub.5 groups, preferably where X is or contains in the bridging chain a carbonyloxy group each C.sub.6 R.sub.5 group being a triodophenyl group or a group in which each R is other than hydrogen; and each M is independently a non-ionic hydrophilic moiety, M preferably being a non-ionic hydrophilic moiety comprising a monohydroxy- or polyhydroxy-alkyl group) and isomers, especially stereoisomers and rotamers, thereof. ##STR1##
该发明提供了一种
碘化双苯基化合物,可用作X射线造影剂,其
化学式为(I)(其中每个C.sub.6R.sub.5基团可以相同或不同;每个基团表示氢原子或
碘原子或M基团,每个C.sub.6R.sub.5基团上的两个或三个非相邻的R基团表示
碘原子,每个C.sub.6R.sub.5基团上的一个、两个或三个R基团表示M基团;X表示提供将两个C.sub.6R.sub.5基团连接的1、2或3个原子链的基团,优选X或包含在桥链中的羰氧基团,每个C.sub.6R.sub.5基团是三
碘苯基团或每个R不是氢的基团;每个M是独立的非离子亲
水基团,M优选为包含单羟基或多羟基烷基的非离子亲
水基团),以及其异构体,特别是立体异构体和旋转异构体。##STR1##