LIGAND FOR IMAGING CARDIAC INNERVATION

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PROBLEM TO BE SOLVED : To provide novel compounds that are used as imaging agents in PET imaging for imaging cardiac innervation.SOLUTION : Compounds used as imaging agents are illustrated in the structure as follows. [n is 0 or 1; R is NRC(=NR)NHR; Rto Rare independently H, F, or the like; W, X, Y and Z are independently H, F, Cl, Br, CF, aryl, or the like; A is not present; Rto Rare H, alkyl, aryl, or heteroaryl, where two of them are formed to have a cyclic structure; and provided that at least one Im is present, where the Im isF.]