Radiolabelled metallocene derivatives

摘要

The invention relates to radiolabelled metallocene derivatives of the general formula <IMAGE> wherein Mc is a metallocenyl group with a radioactive central atom, R is a carbonyl or methylene group, R1 is a hydrogen atom or an alkyl group having 1-4 carbon atoms, A is a carboxy group or a pharmaceutically acceptable salt thereof, or an alkoxycarbonyl or alkanoyl group having 2-5 carbon atoms, and n is 1-4. The invention also relates to radiodiagnostic compositions comprising said radiolabelled metallocene derivatives and to a method of performing a radiodiagnostic examination, in particular of examining the renal function.