The invention provides iodinated bis phenyl compounds, useful as X-ray contrast agents, of formula I ##STR1## (wherein each C.sub.6 R.sub.5 moeity may be the same or different; each R 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.
该发明提供了
碘化双苯基化合物,用作X射线造影剂,其
化学式如下:##STR1##(其中每个C.sub.6 R.sub.5基团可以相同也可以不同;每个R代表氢原子或
碘原子或M基团,每个C.sub.6 R.sub.5基团上的两个或三个非相邻的R基团代表
碘原子,每个C.sub.6 R.sub.5基团上的一个、两个或三个R基团代表M基团;X代表提供将两个C.sub.6 R.sub.5基团连接的1、2或3原子链的基团,最好是X是或包含在桥链中的羰氧基团,每个C.sub.6 R.sub.5基团是三
碘苯基团或其中每个R均不是氢的基团;每个M独立地是非离子亲
水基团,M最好是包含单羟基或多羟基烷基基团的非离子亲
水基团)及其异构体,特别是立体异构体和转型异构体。