Thioflavin S 4%, isotonic, provides an effective tool for the examination and visualization of amyloid structures in biological samples. It is widely used in histology, medical diagnostics and life sciences, especially in the study of neurodegenerative diseases such as Alzheimer's disease.

The solution is characterized by its particular suitability for staining amyloid structures. The 40g of thioflavin S contained binds specifically to the beta-sheet structures of amyloids and produces an intense yellow-green color under fluorescence microscopy. The addition of 9g sodium chloride ensures the isotonicity of the solution in this process, which ensures unbiased visualization of the biological structures.

Chemically, the solution consists of thioflavin S and sodium chloride dissolved in aqua dist./VE water. Thioflavin S is a benzothiazole derivative that binds specifically to amyloid structures and fluoresces under UV light.

In application, the Thioflavin S solution is applied to the biological samples. The Thioflavin S interacts with the amyloid structures and imparts intense fluorescence to them. This specific interaction enables detailed visualization and analysis of amyloid deposits, which are of central importance in neurodegenerative diseases.