1-substituted-1,4,7-triscarboxymethyl-1,4,7,10-tetraazacyclododecane and
申请人:E. R. Squibb & Sons, Inc.
公开号:US04885363A1
公开(公告)日:1989-12-05
Metal-chelating liquids having the formula ##STR1## wherein Y is oxygen or ##STR2## R.sub.1 is hydrogen, alkyl, arylalkyl aryl, alkoxy, hydroxyalkyl ##STR3## wherein G is ##STR4##