NH4

AMMONIUM ION

Created:	1999-07-08
Last modified:	2024-09-27

Find Related PDB Entry
314 entries where NH4 is found as a standalone ligand3 entries where NH4 is covalently linked to polymer or other heterogen groups

Find related ligands:

Similar Ligands (Stereospecific) Similar Ligands (including Stereoisomers) Similar Ligands (Quick Screen) Similar Ligands (Substructure Stereospecific) Similar Ligands (Substructure including Stereoisomers)

Chemical Details
Formal Charge	1
Atom Count	5
Chiral Atom Count	0
Bond Count	4
Aromatic Bond Count	0

2D diagram of NH4

Toggle Hydrogen Toggle Labels

Chemical Component Summary
Name	AMMONIUM ION
Systematic Name (OpenEye OEToolkits)	azanium
Formula	H₄ N
Molecular Weight	18.038
Type	NON-POLYMER

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	10.04	[NH4+]
SMILES	CACTVS	3.341	[NH4+]
SMILES	OpenEye OEToolkits	1.5.0	[NH4+]
Canonical SMILES	CACTVS	3.341	[NH4+]
Canonical SMILES	OpenEye OEToolkits	1.5.0	[NH4+]
InChI	InChI	1.03	InChI=1S/H3N/h1H3/p+1
InChIKey	InChI	1.03	QGZKDVFQNNGYKY-UHFFFAOYSA-O

Related Resource References

Resource Name	Reference
PubChem	16741146, 223
ChEBI	CHEBI:28938, CHEBI:29352
CCDC/CSD	AMFORM01, AGACET02, AGACET01, AGACET03, AFUQID, AMCLAN11, AGACET, AHAKAX, AHTPAL01, AHILAE, AHOXLH, AHCNPI, ADAJUL, ALAMEF, AHAKEB, ADENAY, AMBARB01, AHOXLH05, ACARBM02, AKEKUY, ACARBM01, AMCYME01, AJARAF, AHAJUQ, AMDFAC, AHTPAL03, ABULOZ, AGLYSL01, AHPHAL01, AMFORM, AMACAM, AHTPAL02, AHOXLH02, AHTPAL, AGLYSL, ACARBM, AMACAM01, AMACET, AIPMLM, AKAXIW, AHPHAL02

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.