| abstract |
(57) [Problem] To provide a technique for non-invasively measuring the amount of acetylcholinesterase present in the brain. SOLUTION: General formula 1 (Wherein X * represents a radioactive halogen atom, and R 1 and R 2 Represents the same or different hydrogen atom, lower alkyl group, lower alkoxy group, lower alkylthio group, di-lower alkylamino group or nitro group, and n represents 0 or 1. A) a radioactive aminoacridine derivative or a pharmaceutically acceptable acid addition salt thereof, its use and a method for producing the radioactive aminoacridine derivative. |