| gptkbp:instanceOf | gptkb:opioid 
 | 
                        
                            
                                | gptkbp:alsoKnownAs | gptkb:Demerol gptkb:meperidine
 
 | 
                        
                            
                                | gptkbp:antidote | gptkb:naloxone 
 | 
                        
                            
                                | gptkbp:ATCCode | N02AB02 
 | 
                        
                            
                                | gptkbp:CASNumber | 57-42-1 
 | 
                        
                            
                                | gptkbp:category | gptkb:analgesic gptkb:opioid
 gptkb:phenylpiperidine
 
 | 
                        
                            
                                | gptkbp:cause | addiction tolerance
 dependence
 
 | 
                        
                            
                                | gptkbp:chemicalFormula | C15H21NO2 
 | 
                        
                            
                                | gptkbp:contraindication | MAOI use severe respiratory depression
 
 | 
                        
                            
                                | gptkbp:controlledSubstanceSchedule | gptkb:Schedule_II_(US) 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:Otto_Eisleb 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1939 
 | 
                        
                            
                                | gptkbp:eliminationHalfLife | 2.5–4 hours 
 | 
                        
                            
                                | gptkbp:hasMetabolite | normeperidine 
 | 
                        
                            
                                | gptkbp:legalStatus | prescription only 
 | 
                        
                            
                                | gptkbp:marketedAs | 1940s 
 | 
                        
                            
                                | gptkbp:MeSH_ID | D008575 
 | 
                        
                            
                                | gptkbp:metabolism | liver 
 | 
                        
                            
                                | gptkbp:molecularWeight | 247.33 g/mol 
 | 
                        
                            
                                | gptkbp:origin | gptkb:Germany 
 | 
                        
                            
                                | gptkbp:pregnancyCategory | C (US) 
 | 
                        
                            
                                | gptkbp:PubChem_CID | 4058 DB00454
 
 | 
                        
                            
                                | gptkbp:riskFactor | seizures (with accumulation of normeperidine) 
 | 
                        
                            
                                | gptkbp:routeOfAdministration | oral intramuscular
 subcutaneous
 intravenous
 
 | 
                        
                            
                                | gptkbp:sideEffect | nausea vomiting
 constipation
 dizziness
 sweating
 drowsiness
 respiratory depression
 
 | 
                        
                            
                                | gptkbp:target | gptkb:delta-opioid_receptor gptkb:kappa-opioid_receptor
 gptkb:mu-opioid_receptor
 
 | 
                        
                            
                                | gptkbp:UNII | 55D94103HL 
 | 
                        
                            
                                | gptkbp:usedFor | pain management 
 | 
                        
                            
                                | gptkbp:usedIn | obstetrics acute pain
 preoperative medication
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:List_I_(Canada) 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Pethidine 
 |