Sodium 2-oxo-2-phenylethanesulfonate is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and specialty chemicals. It plays a role in the synthesis of active pharmaceutical ingredients (APIs) due to its ability to introduce sulfonate groups into organic molecules, enhancing their solubility and bioavailability. Additionally, it is employed in the manufacture of dyes and pigments, where it acts as a stabilizing agent or a precursor for complex chemical structures. In industrial applications, it is utilized in the formulation of surfactants and detergents, contributing to their effectiveness in various cleaning processes. Its versatility in chemical reactions makes it a valuable component in research and development for creating innovative materials and compounds.