Cores for technetium radiopharmaceuticals

Organic compounds -- part of the class 532-570 series – Organic compounds – Radioactive metal containing

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C07F 1300, A61K 5104

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active

055895760

ABSTRACT:
Novel complexes of technetium (.sup.99 Tc or .sup.99m Tc) which contain the moiety Tc.dbd.NR, Tc--N.dbd.NY or Tc(--N.dbd.NY).sub.2, and a ligand which confers biological target-seeking properties on the complex, wherein R represents an aryl group, a substituted or unsubstituted alkyl group, or the grouping .dbd.NR.sup.1 R.sup.2 ; Y represents an aryl group or a substituted or unsubstituted alkyl group; and R.sup.1 and R.sup.2 are hydrogen, aryl groups or substituted or unsubstituted aliphatic or cyclic alkyl groups, and may be both the same or different, provided that both are not hydrogen. The complexes are suitable for use in radiopharmaceuticals for a variety of clinical applications. Methods for the preparation of these technetium complexes are also described.

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