A CCR5 receptor antagonist; inhibits CD4-dependent binding of HIV-1Ba-L and HIV-1CM235 gp120 envelope proteins to CCR5 (IC50s = 0.06 and 0.32 nM, respectively); reduces marble burying and repetitive behavior, as well as decreases brain levels of IL-6, IL-9, and IL-17A, in the BTBR T+ Itpr3tf/J mouse model of ASD at 0.1 mg/kg; reduces LPS-induced microglial activation and astrocyte hypertrophy in the dentate gyrus in a rat model of chronic neuroinflammation