has role is protonated form of has functional parent anticoronaviral agent mycophenolic acid A member of the class of 2-benzofurans that is 2-benzofuran-1(3<em>H</em>)-one which is substituted at positions 4, 5, 6, and 7 by methyl, methoxy, (2<i>E</i>)-5-carboxy-3-methylpent-2-en-1-yl, and hydroxy groups, respectively. It is an antibiotic produced by <em>Penicillium brevi-compactum, P. stoloniferum, P. echinulatum</em> and related species. An immunosuppressant, it is widely used (partiularly as its sodium salt and as the 2-(morpholin-4-yl)ethyl ester prodrug, mycophenolate mofetil) to prevent tissue rejection following organ transplants and for the treatment of certain autoimmune diseases. monocarboxylic acid mycotoxin phenols antineoplastic agent xenobiotic immunosuppressive agent gamma-lactone hex-4-enoic acid 2-benzofurans EC 1.1.1.205 (IMP dehydrogenase) inhibitor mycophenolate Penicillium metabolite environmental contaminant