Information card for entry 7251838

Structure parameters

• Formula: C20 H34 O4
• Calculated formula: C20 H34 O4
• Title of publication: ent-Pimarane diterpenoids from the aerial parts of Sigesbeckia pubescens and their myocardial protective activity
• Authors of publication: Li, Wanting; Xia, Guiyang; Xia, Jinyu; Liu, Qiyao; Wu, Xuefen; Zhou, Linnan; Wei, Xiaohong; Xia, Huan; Lin, Sheng
• Journal of publication: RSC Advances
• Year of publication: 2026
• Journal volume: 16
• Journal issue: 19
• Pages of publication: 17310 - 17321
• a: 7.38 ± 0.0004 Å
• b: 12.1066 ± 0.0004 Å
• c: 20.3919 ± 0.001 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1821.95 ± 0.15 ų
• Cell temperature: 149.99 ± 0.1 K
• Ambient diffraction temperature: 149.99 ± 0.1 K
• Number of distinct elements: 3
• Space group number: 19
• Hermann-Mauguin space group symbol: P 21 21 21
• Hall space group symbol: P 2ac 2ab
• Residual factor for all reflections: 0.0822
• Residual factor for significantly intense reflections: 0.0765
• Weighted residual factors for significantly intense reflections: 0.2042
• Weighted residual factors for all reflections included in the refinement: 0.2114
• Goodness-of-fit parameter for all reflections included in the refinement: 1.036
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 1.54184 Å
• Diffraction radiation type: CuKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No