Synonyms: 3H-Pyrazol-3-one, 2,4-dihydro-4,4-bis(5-hydroxy-3-Methyl- 1-phenyl-1H-pyrazol-4-yl)-5-Methyl-2-phenyl-;4,4-bis(5-hydroxy-3-Methyl-1-phenyl-1H-pyrazol-4-yl)-3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one;2,4-Dihydro-4,4-bis(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-5-methyl-2-phenyl-3H-pyrazol-3-one;5,5''-Dihydroxy-3,3',3''-trimethyl-1,1',1''-triphenyl-[4,4':4',4''-ter-1H-pyrazol]-5'(4'H)-one;Edaravone TriMer IMpurity;Edaravone TriMer