Preparation and application of 1-benzothiophene-3(2H)-one_Kain Industrial Additive

Background and overview[1] 1-Benzothiophene-3(2H)-one is an organic intermediate that can be prepared by reacting 2-carboxymethylthiobenzoic acid as a starting material. It can be used to prepare Fluorescent Red 5B. Fluorescent Red 5B is a bluish red oil-soluble solvent pigment with good heat resistance, light resistance, high tinting power and bright color; it can be used…