tolgabide tolgabide tolgabide (inn; development code sl-81.0142) is a drug which was patented by synthélabo as an anticonvulsant but was never marketed. it is an analogue of progabide and acts similarly to it as a prodrug of gaba, and therefore as an indirect agonist of the gaba receptors. tolgabideclinical dataatc codenonelegal statuslegal status investigational identifiers iupac name 4-butanamide cas number86914-11-6pubchem cid5748792chemspider14917033unii0l55qf645fkeggd06181chemblchembl2104937chemical and physical dataformulac18h18cl2n2o2molar mass365.25 g·mol−13d model (jsmol)interactive image smiles cc1cc(cc(c1o)/c(=n/cccc(=o)n)/c2ccc(cc2)cl)cl inchi inchi=1s/c18h18cl2n2o2/c1-11-9-14(20)10-15(18(11)24)17(22-8-2-3-16(21)23)12-4-6-13(19)7-5-12/h4-7,9-10,24h,2-3,8h2,1h3,(h2,21,23)/b22-17+key:aoafgvwkonlqrn-oqkwzonesa-n