2-Chlorothioxanthone is widely utilized in research focused on:

• Photoinitiators in Polymer Chemistry: This compound serves as an effective photoinitiator for UV-curable coatings and inks, enhancing the curing process and improving the durability of products.
• Organic Synthesis: It is employed in the synthesis of various organic compounds, particularly in the development of dyes and pigments, offering vibrant colors and stability.
• Biomedical Applications: Researchers use it in the development of photodynamic therapy agents, which can selectively target and destroy cancer cells when activated by light.
• Environmental Monitoring: This chemical is utilized in the detection of pollutants, providing a method for monitoring environmental contaminants due to its sensitivity to light.
• Material Science: It is incorporated into the formulation of advanced materials, such as sensors and electronic devices, due to its unique photochemical properties that enhance performance.