bhff bhff bhff is a compound used in scientific research which acts as a positive allosteric modulator at the gabab receptor. it has anxiolytic effects in animal studies, and good oral bioavailability. bhffidentifiers iupac name 5,7-bis(1,1-dimethylethyl)-3-hydroxy-3(trifluoromethyl)-2(3h)-benzofuranone cas number123557-91-5 ypubchem cid4332683chemspider3537035 yuniik3w3822bmvcomptox dashboard (epa)dtxsid50402030 echa infocard100.229.838 chemical and physical dataformulac17h21f3o3molar mass330.347 g·mol−13d model (jsmol)interactive image smiles fc(f)(f)c2(o)c1cc(c(c)(c)c)cc(c(c)(c)c)c1oc2=o inchi inchi=1s/c17h21f3o3/c1-14(2,3)9-7-10(15(4,5)6)12-11(8-9)16(22,13(21)23-12)17(18,19)20/h7-8,22h,1-6h3 ykey:rvnoandlziifhb-uhfffaoysa-n y (verify)