Claims for Patent: 4,396,598

Summary for Patent: 4,396,598

Title:	Triiodoisophthalamide X-ray contrast agent
Abstract:	Novel X-ray contrast agents, i.e., N,N'-bis(2,3-dihydroxypropyl)-5-N-(2-hydroxyethyl)glycolamido-2,4,6-triiod oisophthalamide.
Inventor(s):	Lin; Youlin (Chesterfield, MO)
Assignee:	Mallinckrodt, Inc. (St. Louis, MO)
Application Number:	06/338,382
Patent Claims:	1. N,N'-Bis(2,3- dihydroxypropyl)-5-N-(2-hydroxyethyl)glycolamido-2,4,6-triiodoisophthalamid e. 2. A radiological composition containing N,N'-bis(2,3-dihydroxypropyl)-5-N-(2-hydroxyethyl)glycolamido-2,4,6-triiod oisophthalamide in a sufficient amount to provide satisfactory X-ray visualization together with a pharmaceutically acceptable radiological vehicle. 3. In a method for X-ray visualization wherein a radiological composition containing an X-ray contrast agent in a pharmaceutically acceptable radiological vehicle is injected in a sufficient amount to provide adequate visualization and thereafter X-ray visualization carried out, the improvement comprising or utilizing as the radiological composition a composition containing N,N'-bis(2,3-dihydroxypropyl)-5-N-(2-hydroxyethyl)glycolamido-2,4,6-triiod oisophthalamide in a sufficient amount to provide satisfactory X-ray visualization together with a pharmaceutically acceptable radiological vehicle.