N-substituted iminodiacetic acids

Details N-substituted iminodiacetic acids N-substituted iminodiacetic acids

A - Human Necessities

61

K

260/511.5

A61K 51/04 (2006.01)

Patent

CA 1187897

Abstract N-SUBSTITUTED IMINODIACETIC ACIDS New compounds having the formula Image or a pharmaceutically acceptable, water soluble salt thereof, wherein R1 and R4 are each independently hydrogen, methyl or ethyl; one of R2 and R3 is alkyl of 1 to 4 carbons and the other is bromine or iodine; and n is 0, 1 or 2, when complexed with technetium-99m in the presence of a reducing agent provide com- positions which are useful for the external imaging of the hepatobiliary system.

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