FABP4 (aP2 or A-FABP) is the subtype expressed in adipocytes [9], and the research into small molecule inhibitors for such protein initially started when it was reported that knockout animal models of FABP4 produced protective effects against the development of insulin resistance [10], as well as several pathological events linked to the metabolic syndrome and atherosclerosis [11,12,13]. Here, FABP4 is linked to Insulin resistance.