Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Hypoxia

Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...

Autoxidation of Ethers to Peroxides and Hydroperoxides

Autoxidation of Ethers to Peroxides and Hydroperoxides

Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.

Structure and Nomenclature of Ethers

Structure and Nomenclature of Ethers

Structure and Bonding
Ethers are organic compounds with an ether functional group which is characterized by an oxygen atom connected to two — identical or different — alkyl, aryl, or vinyl groups. The C–O–C linkage in dimethyl ether — the simplest ether — has an approximately tetrahedral bond angle of 110.3 degrees. The oxygen atom is sp3- hybridized, with the C–O distance being about 140 pm.
Classification of Ethers
Based on their attached substituent groups, ethers can be classified into two...

Hemoglobin

Hemoglobin

Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...

Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration

Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration

Hemoperfusion and hemofiltration are critical techniques in medical treatments to eliminate accumulated drugs, metabolites, and electrolytes from the bloodstream. These methods are particularly vital in cases of accidental poisoning and drug overdose.Hemoperfusion involves passing blood through an adsorbent material to remove unwanted substances. The main adsorbents used in hemoperfusion include activated charcoal and Amberlite resins. Activated charcoal can adsorb both polar and nonpolar...

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Cotton gland formation genes GbCGF2/3 positively regulate Verticillium wilt resistance through modulating suberin biosynthesis.

The New phytologist·2025

Same author

Synthesis, structure, Hirshfeld surface analysis, and molecular docking studies of the cocrystal between the Cu(II) complex of salicylic acid and uncoordinated piracetam.

Turkish journal of chemistry·2025

Same author

Nematode-resistance loci in upland cotton genomes are associated with structural differences.

G3 (Bethesda, Md.)·2024

Same author

Synthesis, crystal structure and Hirshfeld surface analysis of di-aqua-bis-(<i>o</i>-phenyl-enedi-amine-κ<sup>2</sup><i>N</i>,<i>N</i>')nickel(II) naphthalene-1,5-di-sulfonate.

Acta crystallographica. Section E, Crystallographic communications·2023

Same author

Crystal structure and Hirshfeld surface analysis of 8-aza-niumylquinolinium tetra-chlorido-zincate(II).

Acta crystallographica. Section E, Crystallographic communications·2023

Same author

Synthesis, crystal structure, Hirshfeld surface analysis and DFT study of the 1,1'-(buta-1,3-diyne-1,4-di-yl)bis-(cyclo-hexan-1-ol).

Acta crystallographica. Section E, Crystallographic communications·2023

Search research articles

Related Experiment Video

Updated: May 14, 2026

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis

Published on: November 17, 2011

Desoxyhemigossypol 6-methyl ether.

Vyacheslav V Uzbekov¹, Samat A Talipov, Bakhtiyar T Ibragimov

¹Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. Ulugbek str. 83, Tashkent, 100125 Uzbekistan.

Acta Crystallographica. Section E, Structure Reports Online

|February 21, 2013

Summary

A novel sesquiterpene was identified in pathogen-infected cotton (Gossypium barbadense) stele tissue. Structural analysis revealed specific molecular arrangements and intermolecular interactions in its crystalline form.

More Related Videos

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

Published on: May 4, 2011

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Published on: June 28, 2019

Related Experiment Videos

Last Updated: May 14, 2026

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis

Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis

Published on: November 17, 2011

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

Published on: May 4, 2011

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Published on: June 28, 2019

Area of Science:

Plant biochemistry
Organic chemistry
Crystallography

Background:

Pathogen infection in Gossypium barbadense can induce the production of secondary metabolites.
Sesquiterpenes are a class of organic compounds with diverse biological activities.

Purpose of the Study:

To isolate and characterize a sesquiterpene from pathogen-infected Gossypium barbadense.
To elucidate the crystal structure and intermolecular interactions of the isolated sesquiterpene.

Main Methods:

Isolation of the sesquiterpene from plant tissue.
Single-crystal X-ray diffraction analysis to determine molecular and crystal structure.

Main Results:

A sesquiterpene, C(16)H(18)O(3), was successfully isolated.
The crystal structure revealed two molecules in the asymmetric unit with a dihedral angle of 86.48° between naphtho-furan systems.
Molecules form centrosymmetric tetramers via O-H⋯O hydrogen bonds and are arranged in layers by pi-stacking and C-H⋯O contacts.

Conclusions:

The study reports the isolation and structural characterization of a novel sesquiterpene from Gossypium barbadense.
The crystal packing analysis provides insights into the intermolecular forces governing the solid-state structure.