iopentol

i·o·pen·tol

(ī'ō-pen'tol), N,N'-bis(2,3-dihydroxypropyl)-5-[N-(2-hydroxy-3-methoxypropyl) acetamido]-2,4,6-triiodoisophthalamide; a nonionic, monomeric, low osmolar radiographic contrast medium for intravenous urography or angiography.