Related Experiment Video
Updated: Jun 1, 2026

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis
Published on: November 17, 2011
3,19-Diacetyl-12-nitro-methyl-14-deoxy-andrographolide
1College of Science, Nanjing University of Technolgy, Xinmofan Road No. 5 Nanjing, Nanjing 210009, People's Republic of China.
The crystal structure of C(24)H(33)NO(9) was determined, revealing that molecules are connected through intermolecular C-H⋯O hydrogen bonds. This finding contributes to understanding crystal packing and intermolecular forces in organic compounds.
Area of Science:
- Crystallography
- Chemical Physics
- Organic Chemistry
Background:
- Understanding intermolecular forces is crucial for predicting material properties.
- Hydrogen bonding plays a significant role in molecular assembly and crystal engineering.
Purpose of the Study:
- To determine the crystal structure of the title compound, C(24)H(33)NO(9).
- To investigate the intermolecular interactions present in the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to collect diffraction data.
- The crystal structure was solved and refined using standard crystallographic software.
Main Results:
- The crystal structure of C(24)H(33)NO(9) was successfully elucidated.
- Intermolecular C-H⋯O hydrogen bonds were identified as the primary linking interactions between molecules in the crystal.
Conclusions:
- The crystal packing of C(24)H(33)NO(9) is governed by C-H⋯O hydrogen bonding.
- This study provides valuable data on the structural and bonding characteristics of this organic compound.
Related Concept Videos
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...
Adrenergic Antagonists: Chemistry and Classification of ɑ-Receptor Blockers
Nonselective α-blockers: Nonselective α-blockers contain haloalkylamine or imidazoline moieties. Phenoxybenzamine, with a haloalkylamine...
Adrenergic Agonists: Mixed-Action Agents
Ephedrine and pseudoephedrine lack a catecholamine group, making them less susceptible to degradation by metabolic enzymes. They have increased oral bioavailability and lipophilicity, resulting in a longer duration of action. Their response is reduced by...