Used as an intermediate in pharmaceutical synthesis, particularly in the production of active pharmaceutical ingredients (APIs) involving piperazine and aniline moieties. Commonly employed in the development of kinase inhibitors and other bioactive molecules due to its ability to act as a building block for complex heterocyclic compounds. Also utilized in medicinal chemistry research for structure-activity relationship (SAR) studies, where the methylpiperazine group enhances solubility and binding affinity to target proteins. Its dihydrochloride salt form improves stability and handling in solid-state reactions.