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Structure & Deep Data of Oxygen (O2)

Identification of Oxygen Chemical Compound

2D chemical structure image of Oxygen
Chemical Formula O2
Molecular Weight 31.9988 g/mol
IUPAC Name oxygen
SMILES String O=O
InChI InChI=1S/O2/c1-2
InChIKey MYMOFIZGZYHOMD-UHFFFAOYSA-N

Chemical Structure Description

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The Oxygen molecule contains a total of 1 bond(s). There are 1 non-H bond(s), 1 multiple bond(s), and 1 double bond(s). Images of the chemical structure of Oxygen are given below:

2D chemical structure image of Oxygen
2-dimensional (2D) chemical structure image of Oxygen
3D chemical structure image of Oxygen
3-dimensional (3D) chemical structure image of Oxygen

The 2D chemical structure image of Oxygen is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the chemical structure of Oxygen are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds.

The 3D chemical structure image of Oxygen is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of Oxygen. Download structure data file (SDF/MOL) file of this compound.


chemical table area

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Interactive 3D Visualization

For a better understanding of the chemical structure, an interactive 3D visualization of Oxygen is provided here.

The Oxygen molecule shown in the visualization screen can be rotated interactively by keep clicking and moving the mouse button. Mouse wheel zoom is available as well – the size of the Oxygen molecule can be increased or decreased by scrolling the mouse wheel.

The information of the atoms, bonds, connectivity and coordinates included in the chemical structure of Oxygen can easily be identified by this visualization. By right-clicking the visualization screen, various other options are available including the visualization of van der Waals surface and exporting to an image file.


Search Another Chemical Structure

Enter another compound to search for chemical structure:

Input a chemical compound consisting of C, H, N, O, S, F, Cl, Br, I, Si, P, and/or As atom(s)

Input example for Ethanol:

  • Name: ethanol
  • CAS #: 64-17-5
  • Formula: C2H5OH
  • Smiles: CCO
  • InChI: InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
  • InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N

Deep Data Application Examples

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Additional Information for Identifying Oxygen Molecule

  • SMILES (Simplified Molecular-Input Line-Entry System) string of Oxygen

    The SMILES string of Oxygen is O=O, which can be can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the Oxygen.

  • Structure Data File (SDF/MOL File) of Oxygen

    The structure data file (SDF/MOL File) of Oxygen is available for download in the SDF page of Oxygen, which provides the information about the atoms, bonds, connectivity and coordinates of Oxygen. The Oxygen structure data file can be imported to most of the cheminformatics software systems and applications.

  • Chemical formula of Oxygen

    The molecular formula of Oxygen is available in chemical formula page of Oxygen, which identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.

  • Molecular weight of Oxygen

    The molecular weight of Oxygen is available in molecular weight page of Oxygen, which is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula.

  • Other names (synonyms) or registry numbers of Oxygen

    The Oxygen compound may be called differently depending on the various different situations of industrial applications. Below are the list of the other names (synonyms) of Oxygen including the various registry numbers, if available:

    • 80937-33-3
    • 80217-98-7
    • 14797-70-7
    • 1338-93-8
    • Oxygen, refrigerated liquid (cryogenic liquid) [UN1073] [Nonflammable gas]
    • AQUANAL(TM)-plus oxygen (O2) 1-12 mg/L, test set with color comparator
    • AQUANAL(TM)-plus oxygen (O2) 1-12 mg/L, refill pack for 37428
    • Oxygen 4c21e554-d402-480d-896d-8185c05c7863
    • (O2)(2.)
    • (O2)(..)
    • Oxygen, compressed [UN1072] [Nonflammable gas]
    • AQUANAL™-plus oxygen (O2) 1-12 mg/L
    • Oxygen, refrigerated liquid (cryogenic liquid)
    • O2(2.)
    • D00003
    • E-948
    • E 948
    • (1)O2
    • Oxygen, Messer(R) CANGas, 99.999%
    • UN 1073
    • UN 1072
    • S88TT14065
    • Southern Medical Oxygen, Compressed
    • Compressed gas, oxidizing, n.o.s.
    • Oxygen (family 1st Medical)
    • Compressed Gas Oxidizing,N.O.S.
    • HMDB01377
    • Emergency Oxygen Supply 99.5%
    • Oxygen, >=99.998%
    • Oxygen 64889-0001
    • Oxygen Helium Mixture 30/70
    • Oxygen Helium Mixture 20/80
    • [OO]
    • Oxygen USP - Gas 100%
    • Oxygen, Compressed U.S.P.
    • Oxygen, >=99.6%
    • Oxygen, Refrigerated Liquid
    • Oxygen Compressed U.S.P.
    • Air Compressed Medical Air
    • Oxygen Refrigerated Liquid
    • Oxygen-refrigerated Liquid
    • dioxygen(2.) (triplet)
    • Oxygen 99.95%
    • Oxygen (JP17/USP)
    • Oxygen 99.0%
    • Oxygen (93%)
    • oxygen O2, orthorhombic
    • Oxygen (8CI,9CI)
    • Oxyfit Gas 99.5%
    • Medical Oxygen 100%
    • triplet molecular oxygen
    • singlet molecular oxygen
    • Oxygen-nitrogen Mixture
    • Oxygen 100%
    • Oxygen USP 99%
    • Oxygen 99% USP
    • Madacylinder 99.5%
    • Oxygen 99%
    • Ez-OX
    • Oxygen U.S.P.
    • Oxygen Compressed Gas
    • Oxygen-helium Mixture
    • Oxygen Gas 99%
    • Oxygene - Gas Inh
    • Oxygen, Refrigerated
    • Oxygen (compressed)
    • Prairie Oxygen USP
    • Ez-OX Plus
    • Compressed Oxidizing
    • Oxygen, USP
    • Oxygen USP
    • Oxygen Compressed
    • Tri-med Medical
    • Medical Air
    • Air, compressed
    • triplet dioxygen
    • singlet dioxygen
    • Medical Oxygen
    • Air Compressed
    • Peroxy radical
    • oxygen monoxide
    • Disauerstoff
    • dioxygene
    • dioxidanediyl
    • Oxygen, refrigerated liquid (cryogenic liquid) [UN1073] [Nonflammable gas]
    • Compressed oxygen
    • Dioxygenyl ion
    • OXY
    • Oxygen, compressed [UN1072] [Nonflammable gas]
    • E948
    • O2
    • Oxygen, compressed
    • Oxigeno [Spanish]
    • Oxygene [French]
    • Oxygen-16
    • oxygene
    • Oxygenium medicinale
    • Oxygen, liquified
    • Oxygen (liquid)
    • Sauerstoff
    • Oxygenium
    • Hyperoxia
    • 7782-44-7
    • Pure oxygen
    • Dioxygen
    • Molecular oxygen
    • oxygen molecule
    • Liquid oxygen

Oxygen Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of Oxygen?
O2
How many atoms and what are the elements included the Oxygen molecule?
2 atom(s) - 2 Oxygen atom(s)
How many chemical bonds and what kind of bonds are included the Oxygen structure?
1 bond(s) - 1 non-H bond(s), 1 multiple bond(s), and 1 double bond(s)
What’s the Oxygen’s molecular weight?
31.9988 g/mol
What’s the SMILES code of Oxygen?
O=O
What’s the InChI string of Oxygen?
InChI=1S/O2/c1-2
What’s the InChIKey code of Oxygen?
MYMOFIZGZYHOMD-UHFFFAOYSA-N

11537 The contents of this page can freely be shared if cited as follows:
Source: Chemical Compounds Deep Data Source (CCDDS; https://www.molinstincts.com) based on 41 patented QSQN and QN technology
commercialized into Mol-Instincts database and ChemRTP, ChemEssen, Inc (2024).

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