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Norethindrone

CHEMBL1162 Phase 4 Approved Small molecule
Half-Life
—
Bioavailability
—
Protein Binding
—
Molecular Weight
298.4 g/mol
LogP
3.0
Phase
4

A synthetic progestin used in birth control pills and hormone therapy to prevent pregnancy and treat endometriosis.

Molecular Weight

298.4000 g/mol

LogP

3.00

TPSA

37.30 Ų

Lipinski RO5

Pass

Therapeutic Areas

Bladder Cancer Breast Cancer Colorectal Cancer Endometriosis Hepatitis C HIV/AIDS Hypertension Inflammatory Bowel Disease Leukemia Lymphoma Multiple Sclerosis Non-Small Cell Lung Cancer Osteoporosis Ovarian Cancer Pancreatic Cancer Prostate Cancer Psoriasis Rheumatoid Arthritis Systemic Lupus Erythematosus Thyroid Cancer Type 2 Diabetes

Pharmacokinetics (PK)

Pharmacodynamics (PD)

2D Structure

SVG PNG

Cite this structure


                        

                            
                            
                        

                    

                


                
                

                    

                    

                        
Embed this structure

                        

                        

                            
                            
                        

                    

                

                

                
                

                    
SMILES

                    
C#C[C@]1(O)CC[C@H]2[C@@H]3CCC4=CC(=O)CC[C@@H]4[C@H]3CC[C@@]21C

                

                

                
                

                    
InChI

                    
InChI=1S/C20H26O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,12,15-18,22H,4-11H2,2H3/t15-,16+,17+,18-,19-,20-/m0/s1

                

                

                

                    
                    

                        
Molecular Formula

                        
C20H26O2

                    

                    
                    

                        
HBD / HBA

                        
1 / 2

                    

                    
                    

                        
Rotatable Bonds

                        
1

                    

                    
                    
                    

                        
Heavy Atoms

                        
22

                    

                    
                

            


            
            

                
                


    
    
        
    
    
    
No targets recorded

    
    
Target interaction data is not yet available for this drug.

    



                
            


            
            

                
                


    
    
        
    
    
    
No interactions recorded

    
    
Drug interaction data is not yet available for this compound.

    



                
            


            
            

                
                


    
    
        
    
    
    
No side effects recorded

    
    
Side effect data is not yet available for this drug.

    



                
            


            
            
            

                
Frequently Asked Questions

                

                    
                    

                        
                        

                            
A synthetic progestin used in birth control pills and hormone therapy to prevent pregnancy and treat endometriosis.

                        

                    

                    

                    

                    

                    

                    

                        
                        

                            
Yes, Norethindrone is an approved drug. It has reached clinical phase 4. It is classified as a Small molecule.

                        

                    

                

            

            

            
            

            
            

            
            
{# References & Data Sources section for drug detail pages.
   Renders standard pharmacological database links plus the drug's data_sources field. #}


    
References & Data Sources

    
    
        
        
  • 
            
            
                ChEMBL — European Bioinformatics Institute (EBI).
                CHEMBL1162.
                Open-access bioactivity database.
            
        
    • 
        
        
        
  • 
            
            
                PubChem — National Center for Biotechnology Information (NCBI).
                CID 6230.
                Chemical information database.
            
        
    • 
        
        
        
        
    

    
Data aggregated from publicly available pharmacological databases. Last updated 2026-03-28.




        


        
        
    


    



    
Medical Disclaimer

    

        This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.
    

    

        Data sources:
        ChEMBL,
        PubChem,
        DailyMed.