Patent ID: 6124440
Filing Date: 2000-09-26
Classification: C07B

Abstract:
A .sup.99m Tc complex of formula L.sub.n Tc.dbd.NR, L.sub.n Tc--N.dbd.NY or L.sub.n Tc--(N.dbd.NY).sub.2, where:each L is independently a monodentate or multidentate ligand;Y is a substituted or unsubstituted aryl group or substituted or unsubstituted alkyl group;R is Y or the grouping --NR.sup.1 R.sup.2 ;n is 1, 2, 3 or 4;where at least one of R or Y is combined with one or more of the L groups;R.sup.1 and R.sup.2 are H, substituted or unsubstituted aryl groups or substituted or unsubstituted aliphatic or cyclic alkyl groups, and is the same or different, provided that both are not hydrogen.