Deltarasin hydrochloride is primarily utilized in cancer research due to its ability to inhibit the interaction between KRAS and PDEδ. This interaction is crucial for the proper localization and function of KRAS, a protein often mutated in various cancers. By disrupting this process, it helps in studying the pathways involved in tumor growth and progression. Researchers use it to explore potential therapeutic strategies targeting KRAS-driven cancers, which are notoriously difficult to treat. Additionally, it serves as a valuable tool in understanding the molecular mechanisms underlying cancer cell signaling and proliferation.