Thiazole dyes contain the thiazole ring:
They have the general formula:
Thiazole dyes are not well represented in histotechnology. The class does, however, include thioflavine T, a valuable dye for the fluorescent demonstration of amyloid. The indamine group (–N=) is the chromophore.
R. D. Lillie.
Conn's Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A.