| gptkbp:instanceOf | gptkb:endogenous_compound gptkb:hormone
 
 | 
                        
                            
                                | gptkbp:biosynthesized_from | cholesterol 
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                                | gptkbp:CASNumber | 145-13-1 
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                                | gptkbp:category | hormones neurosteroids
 cholestanes
 pregnanes
 
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                                | gptkbp:chemicalFormula | C21H32O2 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:Adolf_Butenandt gptkb:Edward_Adelbert_Doisy
 1934
 
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                                | gptkbp:effect | modulates GABA_A receptor modulates NMDA receptor
 modulates sigma receptor
 
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                                | gptkbp:foundIn | gptkb:adrenal_gland brain
 liver
 gonads
 
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                                | gptkbp:IUPACName | 3β-hydroxypregn-5-en-20-one 
 | 
                        
                            
                                | gptkbp:meltingPoint | 191–193 °C 
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                                | gptkbp:metabolism | gptkb:CYP17A1 gptkb:3β-hydroxysteroid_dehydrogenase
 
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                                | gptkbp:Molar_mass | 316.48 g/mol 
 | 
                        
                            
                                | gptkbp:predecessor | gptkb:progesterone gptkb:aldosterone
 cortisol
 testosterone
 estrogens
 
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                                | gptkbp:PubChem_CID | 8955 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:progesterone gptkb:pregnanolone
 gptkb:pregnenolone_sulfate
 
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                                | gptkbp:role | gptkb:neurosteroid hormone precursor
 
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                                | gptkbp:UNII | 73R90F7MQ8 
 | 
                        
                            
                                | gptkbp:usedFor | gptkb:dietary_supplement 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:pregnenolone_sulfate 
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                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | pregnenolone 
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