title: 5-Methyl-2-phenyl-2H-pyrazol-3-ol.
abstract: The title compound, C(10)H(10)N(2)O, known as Edaravone (MCI-186), was crystallized from methanol. The two independent mol-ecules in the asymmetric unit are linked through an O-H⋯O hydrogen bond. One mol-ecule adopts a ketone form, while the other adopts an enol form. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Rong
authors.initials: R
authors.lastname: Wang
authors.forename: Yi-Lin
authors.initials: YL
authors.lastname: Yang
authors.forename: Feng
authors.initials: F
authors.lastname: Zhi