mofebutazone mofebutazone mofebutazone (or monophenylbutazone) is a drug used for joint and muscular pain. it is a 3,5-pyrazolinedione derivative. mofebutazoneclinical dataatc codem01aa02 (who) m02aa02 (who)identifiers iupac name 4-butyl-1-phenylpyrazolidine-3,5-dione cas number2210-63-1 ypubchem cid16639chemspider15776 nuniispw36wui5zkeggd07262 ychebichebi:76252 ncomptox dashboard (epa)dtxsid4023331 echa infocard100.016.947 chemical and physical dataformulac13h16n2o2molar mass232.283 g·mol−13d model (jsmol)interactive image smiles ccccc1c(=o)nn(c1=o)c2ccccc2 inchi inchi=1s/c13h16n2o2/c1-2-3-9-11-12(16)14-15(13(11)17)10-7-5-4-6-8-10/h4-8,11h,2-3,9h2,1h3,(h,14,16) nkey:reojlixkjwxugb-uhfffaoysa-n n ny (what is this?) (verify) the drug binds to plasma albumin and competes with drugs such as coumarin anticoagulants, indomethacin and glucocorticoids.