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Common Stock Warrants (Tables)
3 Months Ended
Mar. 31, 2023
Common Stock Warrants [Abstract]  
Schedule of company's warrant activity
Warrant Issuance  Issuance  Exercise
Price
   Outstanding,
December 31,
2021
   Granted   Exercised   Canceled/
Expired
   Variable Settlement Provision Adjustment   Outstanding,
March 31,
2022
   Expiration
Preferred A Placement Warrants  March and April 2018 and August 2019  $1.40    293,042    
    
    
    
    293,042   March and April 2023
Preferred A Lead Investor Warrants  February 2021  $0.0125    52,500    
    
    
    
    52,500   March 2023
Preferred B Placement Warrants  April 2019  $2.10    463,798    
    
    
    
    463,798   April 2024
Convertible Notes Placement Warrants  August 2020  $2.57    171,830    
    
    
    
    171,830   August 2025
Underwriter Warrants  March 2021  $6.00    956,973    
    
    
    
    956,973   March 2026
            1,938,143    
    
    
    
    1,938,143    

 

Warrant Issuance  Issuance  Exercise
Price
   Outstanding,
December 31,
2022
   Granted   Exercised   Canceled/
Expired
   Variable Settlement Provision Adjustment   Outstanding,
March 31,
2023
   Expiration
Preferred A Placement Warrants  March and April 2018 and August 2019  $1.40    293,042    
    
    
    
    293,042   September and
October 2023
Preferred A Lead Investor Warrants  February 2021  $0.0125    52,500    
    
    (52,500)   
    
   March 2023
Preferred B Placement Warrants  April 2019  $2.10    463,798    
    
    
    
    463,798   April 2024
Convertible Notes Placement Warrants  August 2020  $2.57    171,830    
    
    
    
    171,830   August 2025
Underwriter Warrants  March 2021  $6.00    956,973    
    
    
    
    956,973   March 2026
January 2023 warrants  January 2023  $1.57    
    2,322,000    
    
    
    2,322,000   January 2028
February 2023 warrants  February 2023  $1.57    
    348,000    
    
    
    348,000   February 2028
            1,938,143    2,670,000    
    (52,500)   
    4,555,643    

 

Schedule of fair value of the warrants at the issuance date
   Issuance
Date
 
Dividend yield   0%
Expected volatility   60.83%
Risk-free interest rate   3.54%
Expected life   5.0 years 
Valuable date common stock price  $1.39