6-OAU (GTPL5846, 6-n-octylaminouracil) is a surrogate agonist of G protein-coupled receptor 84 (GPR84) that activates human GPR84 in the presence of Gqi5 chimera in HEK293 cells with EC50 of 105 nM in the PI assay. 6-OAU (GTPL5846, 6-n-octylaminouracil) increases [35S]GTPγS incorporated in Sf9 cell membranes expressing human GPR84-Gαi fusion protein with EC50 of 512 nM.