|Title:||N-Substituted iminodiacetic acids|
|Abstract:||Complexes of technetium-99m and a compound selected from the group having the formula ##STR1## or a pharmaceutically acceptable, water soluble salt thereof wherein R.sub.1 and R.sub.4 are each independently hydrogen, methyl or ethyl; one of R.sub.2 and R.sub.3 is alkyl of 1 to 4 carbons and the other is bromine or iodine; and n is 0, 1 or 2, are useful for the external imaging of the hepatobiliary system.|
|Inventor(s):||Nunn; Adrian (Hopewell, NJ), Loberg; Michael (Princeton, NJ)|
|Assignee:||E. R. Squibb & Sons, Inc. (Princeton, NJ)|
Patent Claim Types:|
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