RefMet Compound Details

MW structure	37476 (View MW Metabolite Database details)
RefMet name	Histamine
Systematic name	2-(1H-imidazol-4-yl)ethan-1-amine
SMILES	C(CN)c1c[nH]cn1   Run Tanimoto similarity search (with similarity coefficient >=0.6)
Exact mass	111.079647 (neutral)	Calculate m/z: (Choose adduct) [M+H]+ [M+H-H2O]+ [M.]+ [M+2H]2+ [M+3H]3+ [M+4H]4+ [M+K]+ [M+2K]2+ [M+2K-H]+ [M+Na]+ [M+2Na]2+ [M+2Na-H]+ [M+Li]+ [M+2Li]2+ [M+NH4]+ [M.CH3]+ [M+Ag]+ [M+H+CH3OH]+ [M+H+CH3CN]+ [M+H+2CH3CN]+ [M+Na+CH3CN]+ [M.NaFormate+H]+ [M.NH4Formate+H]+ [M.TMSi]+ [M.tBuDMSi]+ [M+H-Hexose]+ [M+H-EtnP]+ [M+H-SerP]+ [M-H]- [M-H-H2O]- [M-CH3]- [M-2H]2- [M-3H]3- [M-4H]4- [M+Cl]- [M+OAc]- [M+Na-2H]- [M+K-2H]- [M.Formate]- [M.NaFormate-H]- [M.NH4Formate-H]- [M.F]- [M-H-Ser]- [M.HF2]- M(neutral)    View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
Formula	C5H9N3	View other entries in RefMet with this formula
InChI	InChI=1S/C5H9N3/c6-2-1-5-3-7-4-8-5/h3-4H,1-2,6H2,(H,7,8)
InChIKey	NTYJJOPFIAHURM-UHFFFAOYSA-N	View other enantiomers/diastereomers of this metabolite in RefMet
Super Class	Alkaloids
Main Class	Histidine alkaloids
Sub Class	Imidazole alkaloids
Pubchem CID	774
Annotation level	1   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)

Table of KEGG reactions in human pathways involving Histamine

Rxn ID	KEGG Reaction	Enzyme
R01167	L-Histidine <=> Histamine + CO2	L-histidine carboxy-lyase (histamine-forming)
R02150	Histamine + Oxygen + H2O <=> Imidazole-4-acetaldehyde + Ammonia + Hydrogen peroxide	1H-Imidazole-4-ethanamine:oxygen oxidoreductase (deaminating) (copper-containing)
R02155	S-Adenosyl-L-methionine + Histamine <=> S-Adenosyl-L-homocysteine + N-Methylhistamine	S-Adenosyl-L-methionine:histamine N-tele-methyltransferase

Table of KEGG human pathways containing Histamine

Pathway ID	Human Pathway	# of reactions
hsa00340	Histidine metabolism	3