Radionuclide labeling of vitamin B.sub.12 and coenzymes thereof

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

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536 264, 424 9, A61K 4900, C07H 2300

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057393133

ABSTRACT:
A compound useful for in vivo imaging of organs and tumors is provided of formula: ##STR1## wherein ##STR2## is a cobalamin, ##STR3## is derived from a corrin carboxylic acid group of said cobalamin, Y is a linking group and X is a chelating group, optionally comprising a detectable radionuclide or a paramagnetic metal ion, and n is 1-3.

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