2-Fluoro-4-vinylpyridine (CAS 552331-57-4) has a molecular formula of C?H?FN and a molecular weight of 123.13 g/mol, characterized by a fluoro group at C2 and a vinyl group at C4 of the pyridine ring. As a versatile heterocyclic building block, it is widely used in synthesizing functional polymers, pharmaceutical intermediates, and agrochemicals. It is recommended to store it sealed under inert gas to avoid polymerization or degradation, ensuring its reactivity for subsequent reactions.