FB2026_02 , released June 18, 2026
Chemical: dihydrogen
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General Information
Name
dihydrogen
FlyBase ID
FBch0000699
ChEBI Name
dihydrogen
ChEBI ID
CHEBI:18276
PubChem Name
Hydrogen
PubChem ID
CID:783
Chemical Structure
Chemical structure of dihydrogen
dihydrogen
InChIKey

UFHFLCQGNIYNRP-UHFFFAOYSA-N

Definition (ChEBI)

ChEBI: Dihydrogen is an elemental molecule consisting of two hydrogens joined by a single bond. It has a role as an antioxidant, an electron donor, a fuel, a human metabolite and a member of food packaging gas. It is an elemental hydrogen, a gas molecular entity and an elemental molecule.

Roles Classification (ChEBI)
Comment
Synonyms and Secondary IDs (25)
Synonyms
1333-74-0
(PubChem, 2019-)
Atomic hydrogen
(PubChem, 2019-)
Dihydrogen
(PubChem, 2019-)
E 949
(ChEBI, 2019-)
E-949
(ChEBI, 2019-)
E949
(ChEBI, 2019-)
H
(PubChem, 2019-)
H(2)
(ChEBI, 2019-)
H2
(Li et al., 2025, ChEBI, 2019-, Klichko et al., 2019, PubChem, 2019-)
Hydrogen
(ChEBI, 2019-, PubChem, 2019-)
Hydrogen atom
(PubChem, 2019-)
Hydrogen gas
(PubChem, 2019-)
Molecular hydrogen
(PubChem, 2019-)
Polystyrene,mw 190000
(PubChem, 2019-)
PubChem:783
(PubChem, 2019-)
atomic hydrogen
(PubChem, 2019-)
dihydrogen
(ChEBI, 2019-, PubChem, 2019-)
h
(PubChem, 2019-)
h2
(PubChem, 2019-)
hydrogen
(PubChem, 2019-)
hydrogen atom
(PubChem, 2019-)
hydrogen gas
(PubChem, 2019-)
molecular hydrogen
(ChEBI, 2019-, PubChem, 2019-)
polystyrene,mw 190000
(PubChem, 2019-)
pubchem:783
(PubChem, 2019-)
Secondary FlyBase IDs
    References (4)