FABP4-IN-3 (Compound C3) is a highly selective inhibitor of FABP4, with an inhibition constant (Ki) of 25 ± 3 nM for FABP4 and a Ki of 15.03 μM for FABP3, showcasing a selectivity factor of 601 times over FABP3. It also demonstrates metabolic stability and potent anti-inflammatory activity in cells, making it a promising candidate for research in metabolic disorders, cardiac dysfunction, and inflammation-related diseases.