aceburic acid aceburic acid aceburic acid (inn), also known as 4-acetoxybutanoic acid or 4-hydroxybutyric acid acetate, is drug described as an analgesic which was never marketed. it is the acetyl ester of gamma-hydroxybutyrate (ghb, which is 4-hydroxybutanoic acid), and based on its structural relation to ghb, is likely to behave as a prodrug to it. aceburic acidclinical dataatc codenoneidentifiers iupac name 4-(acetyloxy)butanoic acid cas number26976-72-7 npubchem cid176865chemspider154039 yuniif777xep0llchemblchembl2104034 ncomptox dashboard (epa)dtxsid70181476 chemical and physical dataformulac6h10o4molar mass146.142 g·mol−13d model (jsmol)interactive image smiles cc(=o)occcc(=o)o inchi inchi=1s/c6h10o4/c1-5(7)10-4-2-3-6(8)9/h2-4h2,1h3,(h,8,9) ykey:govnvpjymdjysr-uhfffaoysa-n y ny (what is this?) (verify)