PROBLEM TO BE SOLVED: To provide a new imaging probe targeting a tau protein, and suitable for a diagnosis by SPECT.SOLUTION: A conformational disease diagnostic composition contains a compound represented by general formula I, wherein R1, R2, R3, and R4 are mutually independent and representing a group represented by a hydrogen atom, an iodine atom or the like, and R5, R6, R7, R8, and R9 are mutually independent and representing a hydrogen atom, an amino group or the like.COPYRIGHT: (C)2014,JPO&INPIT【課題】タウタンパク質を標的とし、SPECTによる診断に適した新規なイメージングプローブの提供。【解決手段】一般式(I)〔式中、R1、R2、R3、及びR4は、互いに独立して、水素原子、ヨウ素原子等で表される基を表し、R5、R6、R7、R8、及びR9は、互いに独立して、水素原子、アミノ基等を表す。〕で表される化合物を含有するコンフォメーション病診断用組成物。【選択図】なし
