4- (6-Bromo-2-benzothiazolyl) -N-methylbenzenamine

This small molecule is a high-affinity amyloid imaging agent, binding to Aβ (1-40) with a K_D of 1.7 nM. It is utilized in Alzheimer's disease research for the detection and quantification of amyloid plaques in both in vitro assays and in vivo imaging studies.