KDM4D-IN-1 is primarily utilized in biochemical research to study the role of histone demethylases in cellular processes. It serves as a selective inhibitor of the KDM4D enzyme, which is involved in the regulation of gene expression by modifying histone proteins. Researchers use this compound to investigate its effects on epigenetic mechanisms, particularly in the context of cancer biology, where aberrant histone methylation patterns are often observed. By inhibiting KDM4D, scientists can explore potential therapeutic strategies targeting epigenetic dysregulation in diseases such as cancer. Additionally, it aids in understanding the broader implications of histone demethylation in cellular differentiation, development, and disease progression.