| gptkbp:instanceOf | gptkb:neurotransmitter gptkb:hormone
 
 | 
                        
                            
                                | gptkbp:ATCCode | N05CH01 
 | 
                        
                            
                                | gptkbp:CASNumber | 73-31-4 
 | 
                        
                            
                                | gptkbp:category | gptkb:antioxidant gptkb:indoleamine
 chronobiotic
 
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                                | gptkbp:chemicalFormula | C13H16N2O2 
 | 
                        
                            
                                | gptkbp:color | white to off-white 
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                                | gptkbp:discoveredBy | gptkb:Aaron_B._Lerner 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1958 
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                                | gptkbp:excretion | urine 
 | 
                        
                            
                                | gptkbp:foundIn | gptkb:Bacteria animals
 fungi
 plants
 
 | 
                        
                            
                                | gptkbp:halfLife | 20–50 minutes 
 | 
                        
                            
                                | gptkbp:IUPACName | gptkb:N-acetyl-5-methoxytryptamine 
 | 
                        
                            
                                | gptkbp:legalStatus | over-the-counter (US) prescription-only (EU)
 
 | 
                        
                            
                                | gptkbp:meltingPoint | 116–118 °C 
 | 
                        
                            
                                | gptkbp:MeSH_ID | gptkb:D008545 
 | 
                        
                            
                                | gptkbp:metabolism | liver 
 | 
                        
                            
                                | gptkbp:molecularWeight | 232.278 g/mol 
 | 
                        
                            
                                | gptkbp:predecessor | serotonin tryptophan
 
 | 
                        
                            
                                | gptkbp:producedBy | pineal gland 
 | 
                        
                            
                                | gptkbp:PubChem_CID | gptkb:CHEBI:16796 gptkb:CHEMBL941
 896
 
 | 
                        
                            
                                | gptkbp:recipient | gptkb:MT1_receptor gptkb:MT2_receptor
 gptkb:MT3_receptor
 
 | 
                        
                            
                                | gptkbp:regulates | circadian rhythm sleep-wake cycle
 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral transdermal
 sublingual
 
 | 
                        
                            
                                | gptkbp:sideEffect | nausea dizziness
 headache
 drowsiness
 
 | 
                        
                            
                                | gptkbp:solubility | slightly soluble in water 
 | 
                        
                            
                                | gptkbp:UNII | JL5DK93RCL 
 | 
                        
                            
                                | gptkbp:usedAs | gptkb:dietary_supplement 
 | 
                        
                            
                                | gptkbp:usedFor | delayed sleep phase disorder insomnia treatment
 jet lag
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Insomnia 
 | 
                        
                            
                                | gptkbp:bfsLayer | 5 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Melatonin 
 |