Histone Acetyltransferase Inhibitor II is primarily used in research to study the role of histone acetylation in gene expression and cellular processes. By inhibiting histone acetyltransferases (HATs), it helps scientists understand how these enzymes regulate chromatin structure and function. This inhibitor is particularly valuable in cancer research, as it can be used to explore the mechanisms of tumor growth and progression linked to abnormal histone acetylation. Additionally, it aids in the development of potential therapeutic strategies targeting epigenetic modifications in diseases such as neurodegenerative disorders and inflammatory conditions. Its application extends to studying cellular differentiation and the impact of epigenetic changes on cellular behavior.