Quarterly report pursuant to Section 13 or 15(d)

Cover

v3.21.2
Cover - shares
 9 Months Ended
Sep. 30, 2021
Oct. 31, 2021
Cover [Abstract]    
Entity Registrant Name MONOPAR THERAPEUTICS INC.  
Entity Central Index Key 0001645469  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Current Reporting Status Yes  
Document Period End Date Sep. 30, 2021  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2021  
Entity Ex Transition Period true  
Entity Common Stock Shares Outstanding   12,590,612
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-39070  
Entity Incorporation State Country Code DE  
Entity Tax Identification Number 32-0463781  
Entity Address Address Line 1 1000 Skokie Blvd.  
Entity Address Address Line 2 Suite 350  
Entity Address City Or Town Wilmette  
Entity Address State Or Province IL  
Entity Address Postal Zip Code 60091  
City Area Code 847  
Local Phone Number 388-0349  
Security 12b Title Common Stock, $0.001 par value  
Trading Symbol MNPR  
Security Exchange Name NASDAQ  
Entity Interactive Data Current Yes