NEW DERIVATIVES OF 2,4,6-TRIIODO-ISOPHTHALIC ACID,PROCESSES FOR THEIR SYNTHESIS AND X-RAY CONTRASTING MATERIALS CONTAINING THESE

摘要

Compounds for use in non-ionic X-ray contrasting materials having the formula IMAGE in which (H0)2-3alkyl is 1,3-dihydroxyisopropyl, 2,3-dihydroxypropyl or 1,3-dihydroxy-2-hydroxymethylisopropyl, R is hydrogen or methyl, and R1 is an alkyl residue with 1 to 5 carbon atoms. These compounds possess high water-solubility as well as excellent stability against hydrolysis. Methods for preparation and use of the compounds are also disclosed.