3,4-Difluoro-2-methoxyphenylboronic acid is a phenylboronic compound with similar physicochemical properties to phenylboronic acid. It is mainly used as an intermediate in organic synthesis and a basic raw material in pharmaceutical chemistry. It can be used for the structural modification and synthesis of fluorobenzene pharmaceutical molecules and bioactive molecules. For example, some literature reports that this substance can be used for the structural modification and preparation of protein kinase inhibitors.