Chrysamine G is primarily used in research as a fluorescent dye for staining and imaging purposes. It is particularly valuable in studying amyloid plaques, which are associated with neurodegenerative diseases like Alzheimer's. The dye binds selectively to amyloid-beta proteins, allowing researchers to visualize and analyze plaque formation in brain tissues. This application aids in understanding disease progression and evaluating potential therapeutic interventions. Additionally, Chrysamine G is explored for its potential in photodynamic therapy due to its light-sensitive properties, which could be harnessed for targeted treatment of certain conditions.