There is provided a composition comprising a compound represented by general formula (I), wherein R
l
represents a 5-iodothiophen-2-yl group or the like, and R
2
represents a 4-dimethylaminophenyl group or the like. This composition is useful for diagnosis of an amyloid-related disease such as Alzheimer's disease because the compound has high binding specificity to amyloid β protein, high permeability through the blood-brain barrier, and a property of being rapidly eliminated from sites other than senile plaques in the brain.
提供了一种化合物组合物,包括一个通式(I)所表示的化合物,其中Rl代表5-
碘噻吩-2-基团或类似基团,R2代表4-
二甲氨基苯基团或类似基团。该组合物对于诊断与淀粉样蛋白相关的疾病,如阿尔茨海默病非常有用,因为该化合物具有高度的结合特异性,对血脑屏障有高渗透性,并且具有在脑部老年斑以外的区域被迅速清除的特性。