2-Iodophenylethyne (CAS 932-88-7) has a molecular formula of C?H?I and a molecular weight of 240.03 g/mol, with an ethynyl group (-C??CH) and an iodine atom at the ortho positions of the benzene ring. As an aryl iodide-containing alkyne, it is a key building block in organic synthesis (e.g., Sonogashira coupling, cycloaddition reactions) for pharmaceuticals and functional materials. It should be stored sealed under cool, dry conditions to prevent light-induced degradation, ensuring its reactivity for cross-coupling applications.