Diazepam (DZ) was purchased from Sigma-Aldrich (St. Louis, MO). Rimonabant (Rim) and Δ9-tetrahydrocannabinol (THC) were obtained from the National Institute on Drug Abuse (Bethesda, MD). The MAGL inhibitor JZL184 (Long et al., 2009) and the FAAH inhibitor PF-3845 (Ahn et al., 2009) were synthesized as described previously. All drugs were dissolved in a vehicle consisting of equal parts ethanol and Alkamuls-620 (Rhone-Poulenc, Princeton, NJ), then diluted with normal saline to a final ratio of 1:1:18. All compounds were administered intraperitoneally (i.p.), at a volume of 10 μl/g body mass. All solutions were warmed to room temperature prior to injection.
