This specialty chemical is a substituted thioxanthone derivative primarily used as a Type II photoinitiator in UV-curable systems, such as printing inks, coatings, adhesives, and overprint varnishes. It absorbs UV light to generate reactive radicals that initiate free radical polymerization. Additionally, it serves as a key intermediate in organic synthesis for pharmaceuticals, agrochemicals, dyes, and pigments due to its unique structure enabling specific reactivity. In research, it functions as a building block for studying thioxanthene derivatives, advancing photochemistry, medicinal chemistry, and materials science.