Drugs for the diagnosis of tissue reproductive activity or the treatment of proliferative diseases

摘要

An agent which comprises, as an active ingredient, a radiolabeled compound as represented by the following formula or a pharmaceutically acceptable salt thereof: wherein R₁ denotes hydrogen, or a linear- or branched-chain alkyl group having 1-8 carbon atoms, R₂ denotes hydrogen, hydroxyl or a halogen substituent, R₃ denotes hydrogen or fluorine substituent, R₄ denotes oxygen, sulfur, or a methylene substituent, and R denotes a radioactive halogen substituent. The agent is stable in vivo, and either stays in cells or is incorporated in DNA, thus serving for diagnosis of tissue proliferation activity or treatment of proliferative disease.