Sodium 2-Iodobenzenesulfonate is primarily used in organic synthesis as a versatile intermediate. It plays a significant role in the preparation of various pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs). Its iodine and sulfonate groups make it a valuable building block for creating complex molecules through substitution and coupling reactions. Additionally, it is utilized in the development of dyes and pigments, where its structure aids in achieving specific color properties. In research, it serves as a reagent for studying reaction mechanisms and developing new synthetic pathways. Its applications extend to material science, where it is used in the modification of polymers and other materials to enhance their functional properties.