Nexturastat A is primarily utilized in the field of cancer research due to its role as a selective HDAC6 inhibitor. It is particularly effective in targeting and inhibiting histone deacetylase 6, which plays a crucial role in cell motility, protein degradation, and stress responses. By inhibiting HDAC6, it helps in disrupting the function of cancer cells, making it a potential therapeutic agent for various types of cancers, including multiple myeloma and other hematologic malignancies. Additionally, it is used in studies to understand the mechanisms of protein aggregation and degradation pathways, which are significant in neurodegenerative diseases. Its application extends to preclinical research where it aids in evaluating the efficacy and safety of new cancer treatments.