hLTA4H/hLTA4S-IN-1 is a possible dual inhibitor that has the activity of inhibiting both human leukotriene hydrolase (hLTA4H) and human leukotriene C4 synthase (hLTC4S). hLTA4H/hLTA4S-IN-1 was identified by computer-assisted methods and is able to effectively interfere with the leukotriene biosynthesis pathway in cells. hLTA4H/hLTA4S-IN-1 can be used to study inflammatory responses.