Certain N-[poly(hydroxyalkyl)alkyl], 2,4,6-triiodoisophthalamic acids are useful as x-ray contrast agents. A representative compound has the structure ##STR1##
Certain N-[poly(hydroxyalkyl)alkyl],2,4,6-triiodoisophthalamic acids are useful as x-ray contrast agents. A representative compound has the structure ##STR1##