Information card for entry 2238727

Structure parameters

• Common name: Pimobendan B form
• Chemical name: (<i>RS</i>)-6-[2-(4-Methoxyphenyl)-1<i>H</i>-benzimidazol-5-yl]-5-methyl-4,5-dihydropyridazin-3(2<i>H</i>)-one
• Formula: C19 H18 N4 O2
• Calculated formula: C19 H18 N4 O2
• SMILES: n1c([nH]c2cc(ccc12)C1=NNC(=O)CC1C)c1ccc(OC)cc1
• Title of publication: Pimobendan B from powder diffraction data
• Authors of publication: Zvirgzdins, Alvis; Delina, Mara; Mishnev, Anatoly; Actins, Andris
• Journal of publication: Acta Crystallographica Section E
• Year of publication: 2013
• Journal volume: 69
• Journal issue: 11
• Pages of publication: o1677
• a: 18.891 ± 0.005 Å
• b: 9.9619 ± 0.0005 Å
• c: 9.5029 ± 0.0008 Å
• α: 90°
• β: 90.799 ± 0.013°
• γ: 90°
• Cell volume: 1788.2 ± 0.5 ų
• Cell temperature: 293 K
• Ambient diffraction temperature: 293 K
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Goodness-of-fit parameter for all reflections: 1.3
• Method of determination: powder diffraction
• Diffraction radiation wavelength: 1.54184 Å
• Diffraction radiation type: CuKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No