... Chemistry.--Thioflavin T \vas originally prepared'" by condensing sulfur with p-toluidine to form dehydro ... It)) hbbott Laiioraturies, U. S. Patent Application AL56,869/65: it.) I)ow Chemical Co., U (3 ... to a solution of 6-ethylbenzothiazoline-2-thione (22.4 g, 0.11 mole) in 12 KaOH (65 ml ...