Helium-3

Synopsis, Chemistry

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Also known as: Helium, isotope of mass 3, Helium he-3, (3he)helium, 14762-55-1, Helium, he-3, I83w8elb18

Molecular Formula

Molecular Weight

3.0160293220 g/mol

InChI Key

SWQJXJOGLNCZEY-BJUDXGSMSA-N

FDA UNII

I83W8ELB18

Helium He-3 is under investigation in clinical trial NCT00846014 (Asthma Exacerbation and Helium-3 MRI).

1 2D Structure

Helium-3

2 Identification

2.1 Computed Descriptors

2.1.1 IUPAC Name

helium-3

2.1.2 InChI

InChI=1S/He/i1-1

2.1.3 InChI Key

SWQJXJOGLNCZEY-BJUDXGSMSA-N

2.1.4 Canonical SMILES

[He]

2.1.5 Isomeric SMILES

[3He]

2.2 Other Identifiers

2.2.1 UNII

I83W8ELB18

2.3 Synonyms

2.3.1 MeSH Synonyms

1. 3he Isotope

2. He-3 Isotope

2.3.2 Depositor-Supplied Synonyms

1. Helium, Isotope Of Mass 3

2. Helium He-3

3. (3he)helium

4. 14762-55-1

5. Helium, He-3

6. I83w8elb18

7. Unii-i83w8elb18

8. 3he Isotope

9. Helium-3 Atom

10. He-3 Isotope

11. Einecs 238-822-9

12. (3)he

13. Helium-3he, 99.8 Atom %

14. (3)2he

15. Chebi:30218

16. Db12940

17. Helium-3he, 99.95 Atom %, 99.9% (cp)

18. Q533498

19. Helium-3he, 99.95 Atom %, 99.995% (cp)

20. Helium-3he, 99.95 Atom %, 99.999% (cp)

21. Helium-3he, 99.9999 Atom %, 99.995% (cp)

2.4 Create Date

2006-06-21

3 Chemical and Physical Properties

Molecular Formula	He
Molecular Weight	3.0160293220 g/mol
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	3.0160293220 g/mol
Monoisotopic Mass	3.0160293220 g/mol
Topological Polar Surface Area	0 Å²
Heavy Atom Count	1
Formal Charge	0
Complexity	0
Isotope Atom Count	1
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently Bonded Unit Count	1