申请人:Grimmond Brian James
公开号:US20110245512A1
公开(公告)日:2011-10-06
In one aspect, the present invention provides a contrast enhancement agent comprising an iron chelate having structure I and salts thereof
wherein R
1
is independently at each occurrence a hydroxy group, a C
1
-C
3
hydroxyalkyl group, or a C
1
-C
3
alkyl group, and b is 0-4; R
2
-R
7
are independently at each occurrence hydrogen, a C
1
-C
3
hydroxyalkyl group, or a C
1
-C
3
alkyl group, with the proviso that at least one of R
1
-R
7
is a hydroxy group or a C
1
-C
3
hydroxyalkyl group; and wherein Q is one or more charge balancing counterions. Also provided are a metal chelating ligand having structure IX and medical formulations comprising the contrast enhancement agent I.