A Novel and Efficient Method for the Technetium-99m Labelling of Disulfide Compounds Using a Tetrahydroborate Exchange Resin

A novel and efficient method for the technetium-99m labelling of disulfide compound 7 was established with high radiochemical purity in which tetrahydroborate exchange resin (BER) simultaneously carries out the reduction of 7, the reduction of [99mTc]pertechnetate and chelation of 7 with technetium-99m. The labelling occurs in a one-pot three-step procedure that is amenable to the preparation of 99mTc-radiopharmaceuticals.