CHEBI:18276 - dihydrogen

Main ChEBI Ontology Automatic Xrefs
ChEBI Name dihydrogen
ChEBI ID CHEBI:18276
Definition An elemental molecule consisting of two hydrogens joined by a single bond.
Stars This entity has been manually annotated by the ChEBI Team.
Secondary ChEBI IDs CHEBI:5785, CHEBI:13350, CHEBI:25363
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Formula H2
Net Charge 0
Average Mass 2.01588
InChI InChI=1S/H2/h1H
InChIKey UFHFLCQGNIYNRP-UHFFFAOYSA-N
SMILES [H][H]
Metabolite of Species Details
Homo sapiens (NCBI:9606) See: DOI
Roles Classification
Chemical Role(s): antioxidant
A substance that opposes oxidation or inhibits reactions brought about by dioxygen or peroxides. In European countries, E-numbers for permitted antioxidant food additives are from E 300 to E 324.
electron donor
A molecular entity that can transfer an electron to another molecular entity.
Biological Role(s): human metabolite
Any mammalian metabolite produced during a metabolic reaction in humans (Homo sapiens).
food packaging gas
A food additive that is a (generally inert) gas which is used to envelop foodstuffs during packing and so protect them from unwanted chemical reactions such as food spoilage or oxidation during subsequent transport and storage. The term includes propellant gases, used to expel foods from a container.
Application(s): fuel
An energy-rich substance that can be transformed with release of usable energy.
food packaging gas
A food additive that is a (generally inert) gas which is used to envelop foodstuffs during packing and so protect them from unwanted chemical reactions such as food spoilage or oxidation during subsequent transport and storage. The term includes propellant gases, used to expel foods from a container.
View more via ChEBI Ontology
ChEBI Ontology
Outgoing dihydrogen (CHEBI:18276) has role antioxidant (CHEBI:22586)
dihydrogen (CHEBI:18276) has role electron donor (CHEBI:15022)
dihydrogen (CHEBI:18276) has role food packaging gas (CHEBI:77974)
dihydrogen (CHEBI:18276) has role fuel (CHEBI:33292)
dihydrogen (CHEBI:18276) has role human metabolite (CHEBI:77746)
dihydrogen (CHEBI:18276) is a elemental hydrogen (CHEBI:33260)
dihydrogen (CHEBI:18276) is a elemental molecule (CHEBI:25362)
Incoming dideuterium (CHEBI:29294) is a dihydrogen (CHEBI:18276)
diprotium (CHEBI:29299) is a dihydrogen (CHEBI:18276)
ditritium (CHEBI:29298) is a dihydrogen (CHEBI:18276)
H group (CHEBI:64428) is substituent group from dihydrogen (CHEBI:18276)
IUPAC Name
dihydrogen
Synonyms Sources
dihydrogen ChEBI
E 949 ChEBI
E-949 ChEBI
E949 ChEBI
H2 KEGG COMPOUND
H2 IUPAC
H2 UniProt
Hydrogen KEGG COMPOUND
molecular hydrogen ChEBI
Database Links Databases
748 MolBase
C00282 KEGG COMPOUND
HMDB01362 HMDB
Hydrogen Wikipedia
HYDROGEN-MOLECULE MetaCyc
View more database links
Registry Numbers Types Sources
1333-74-0 CAS Registry Number KEGG COMPOUND
1333-74-0 CAS Registry Number ChemIDplus
1333-74-0 CAS Registry Number NIST Chemistry WebBook
3 Gmelin Registry Number Gmelin
3587189 Reaxys Registry Number Reaxys
Citations Waiting for Citations Types Sources
15303745 PubMed citation CiteXplore
16517646 PubMed citation CiteXplore
18706888 PubMed citation CiteXplore
19905000 PubMed citation CiteXplore
19908827 PubMed citation CiteXplore
20568549 PubMed citation CiteXplore
24171421 PubMed citation CiteXplore
Last Modified
02 May 2014