Hoechst Celanese Corporation

Washington University

Wei-Jen Peng

Humberto Ramos, Jr

David E Reichert

Daniel A Aguilar

A composition of matter having the formula ##STR1## wherein R.sub.1 -R.sub.14, M, l, m, and n are defined herein and which have application as MRI contrasting agents.

Tripodal aromatic heterocycle carboxamide MRI contrast agents

Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.1 -R.sub.14, M', l, m, and n are defined herein.

Tripodal carboxamide ligands for MRI contrast agents

A method of performing an NMR diagnostic procedure in a patient in need of the same comprising administering to the patient an effective amount of an NMR diagnostic medium and then exposing the patient to an NMR measurement step to which the diagnostic medium is responsive thereby imaging at least a portion of the patient's body, wherein the diagnostic medium comprises a composition of matter which contains a compound which has the structural formula: ##STR1## wherein R, R.sub.1 -R.sub.10 and M are defined herein.

MRI diagnostic procedures using tripodal pyridinyl metal complexes

Novel precursors of ligands or use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.2-R.sub.10 are defined herein.

Thio-substituted pyridines as MRI ligand precursors

A composition of matter having the following ##STR1## wherein R, R.sub.1 -R.sub.10 and M are defined herein.

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Corpus Christi, TX, United States of America

Wei-Jen Peng