tolibut tolibut tolibut, also known as 3-(p-tolyl)-4-aminobutyric acid (or β-(4-methylphenyl)-gaba), is drug that was developed in russia. it is an analogue of γ-aminobutyric acid (gaba) (that is, a gaba analogue) and is the 4-methyl analogue of phenibut, and is also an analogue of baclofen where the 4-chloro substitution has been replaced with a 4-methyl substitution. tolibut has been described as possessing analgesic, tranquilizing, and neuroprotective properties. it is not fully clear as to whether the drug was ever approved or used medically in russia, though it may have been. tolibutclinical dataatc codenoneidentifiers iupac name 4-amino-3-(4-methylphenyl)butanoic acid cas number28311-38-8 28311-37-7 (hcl)pubchem cid49344chemspider44852uniiuj5n9sj9nlcomptox dashboard (epa)dtxsid00951003 chemical and physical dataformulac11h15no2molar mass193.246 g·mol−13d model (jsmol)interactive image smiles cc1=cc=c(c=c1)c(cc(=o)o)cn inchi inchi=1s/c11h15no2/c1-8-2-4-9(5-3-8)10(7-12)6-11(13)14/h2-5,10h,6-7,12h2,1h3,(h,13,14)key:mszrpurxkhmsff-uhfffaoysa-n