title: Methyl 2-{[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl-idene)(thio-phen-2-yl)meth-yl]amino}-3-phenyl-propionate.
abstract: In the title compound, C(25)H(23)N(3)O(3)S, an intra-molecular N-H⋯O inter-action generates an S(6) ring, which stabilizes the enamine-keto form of the compound. This S(6) ring and the pyrazole ring are essentially coplanar, making a dihedral angle of 1.49 (6)°. The bond lengths within the S(6) ring of the mol-ecule lie between classical single- and double-bond lengths, indicating extensive conjugation. The structure exhibits a thienyl-ring flip disorder, with occupancy factors in the ratio 64.7 (3):35.3 (3).
authors.affiliation: Department of Basic Science, Tianjin Agricultural College, Tianjin Jinjing Road No. 22, Tianjin 300384,  People's Republic of China.
authors.forename: Hualing
authors.initials: H
authors.lastname: Zhu
authors.forename: Xinxin
authors.initials: X
authors.lastname: Zhao
authors.forename: Zhan
authors.initials: Z
authors.lastname: Wang
authors.forename: Junjie
authors.initials: J
authors.lastname: Ren
authors.forename: Miao
authors.initials: M
authors.lastname: Zhang
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 May 15;66(Pt 6):o1352
references.pmid: 21579438
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Jan 09;66(Pt 2):o273
references.pmid: 21579710