CHEBI:29202 - isocyanic acid

Main ChEBI Ontology Automatic Xrefs
ChEBI Name isocyanic acid
ChEBI ID CHEBI:29202
Definition A colourless, volatile, poisonous inorganic compound with the formula HNCO; the simplest stable chemical compound that contains carbon, hydrogen, nitrogen, and oxygen, the four most commonly-found elements in organic chemistry and biology.
Stars This entity has been manually annotated by the ChEBI Team.
Supplier Information
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Formula CHNO
Net Charge 0
Average Mass 43.02478
InChI InChI=1S/CHNO/c2-1-3/h2H
InChIKey OWIKHYCFFJSOEH-UHFFFAOYSA-N
SMILES N=C=O
Roles Classification
Chemical Role(s): Bronsted acid
A molecular entity capable of donating a hydron to an acceptor (Bronsted base).
(via hydracid )
View more via ChEBI Ontology
ChEBI Ontology
Outgoing isocyanic acid (CHEBI:29202) is a hydracid (CHEBI:33405)
isocyanic acid (CHEBI:29202) is a one-carbon compound (CHEBI:64708)
isocyanic acid (CHEBI:29202) is conjugate acid of cyanate (CHEBI:29195)
isocyanic acid (CHEBI:29202) is tautomer of cyanic acid (CHEBI:28024)
Incoming isocyanates (CHEBI:53212) has functional parent isocyanic acid (CHEBI:29202)
cyanate (CHEBI:29195) is conjugate base of isocyanic acid (CHEBI:29202)
isocyanato group (CHEBI:29810) is substituent group from isocyanic acid (CHEBI:29202)
cyanic acid (CHEBI:28024) is tautomer of isocyanic acid (CHEBI:29202)
IUPAC Name
isocyanic acid
Synonyms Sources
[C(NH)O] IUPAC
carbimide ChEBI
HN=C=O NIST Chemistry WebBook
HNCO IUPAC
hydrogen isocyanate NIST Chemistry WebBook
ICA ChEBI
isocyansäure ChEBI
isozyansäure ChEBI
methenamide ChEBI
oxidoazanediidocarbon IUPAC
Registry Numbers Types Sources
1616281 Beilstein Registry Number Beilstein
75-13-8 CAS Registry Number NIST Chemistry WebBook
75-13-8 CAS Registry Number ChemIDplus
840 Gmelin Registry Number Gmelin
Citations Waiting for Citations Types Sources
19494520 PubMed citation CiteXplore
977566 PubMed citation CiteXplore
Last Modified
12 June 2012