[′sōd·ē·əm ‚dī·ə′trī·zə‚wāt] (organic chemistry) C11H8NO4I3Na White, water-soluble crystals which give a radiopaque solution; used in medicine as a radiopaque medium.
sodium diatrizoate
so·di·um di·a·tri·zo·ate
a water-soluble organic iodine compound formerly used for intravenous excretory urography and angiography.