| Schedule of accrued expenses and other current liabilitiies | 
 
 Accrued expenses and other current liabilities consist of the
 following: 
 
   
 
 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  
 
 |   | 
    | 
 
March 31, 
 2021
 | 
   | 
    | 
 
December 31, 
 2020
 | 
   | 
  
 
 | 
  
 Accrued consulting 
  | 
    | 
 $ | 
 162,001 | 
   | 
    | 
 $ | 
 115,405 | 
   | 
  
 
 | 
  
 Accrued legal and professional fees 
  | 
    | 
   | 
 82,802 | 
   | 
    | 
   | 
 383,286 | 
   | 
  
 
 | 
  
 Accrued research and development 
  | 
    | 
   | 
 378,775 | 
   | 
    | 
   | 
 83,491 | 
   | 
  
 
 | 
  
 Accrued interest 
  | 
    | 
   | 
 499 | 
   | 
    | 
   | 
 1,673 | 
   | 
  
 
 | 
  
 Accrued other 
  | 
    | 
   | 
 3,322 | 
   | 
    | 
   | 
 49,079 | 
   | 
  
 
  | 
    | 
 
  
   
  | 
 
  
   
  | 
   | 
    | 
 
  
   
  | 
 
  
   
  | 
   | 
  
 
 | 
  
 Total accrued expenses and other current liabilities 
  | 
    | 
 $ | 
 627,399 | 
   | 
    | 
 $ | 
 632,934 | 
   | 
  
 
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  | 
 
  
   
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    | 
 
  
   
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 | 
 
 Accrued expenses and other current liabilities consist of the
 following: 
 
   
 
 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  
 
 |   | 
    | 
 
December 31, 
 2020
 | 
   | 
    | 
 
December 31, 
 2019
 | 
   | 
  
 
 | 
  
 Accrued consulting 
  | 
    | 
 $ | 
 115,405 | 
   | 
    | 
 $ | 
 65,017 | 
   | 
  
 
 | 
  
 Accrued legal and professional fees 
  | 
    | 
   | 
 383,286 | 
   | 
    | 
   | 
 1,434,874 | 
   | 
  
 
 | 
  
 Accrued research and development 
  | 
    | 
   | 
 83,491 | 
   | 
    | 
   | 
 180,716 | 
   | 
  
 
 | 
  
 Accrued interest 
  | 
    | 
   | 
 1,673 | 
   | 
    | 
   | 
 5,123 | 
   | 
  
 
 | 
  
 Accrued other 
  | 
    | 
   | 
 49,079 | 
   | 
    | 
   | 
 38,411 | 
   | 
  
 
  | 
    | 
 
  
   
  | 
 
  
   
  | 
   | 
    | 
 
  
   
  | 
 
  
   
  | 
   | 
  
 
 | 
  
 Total accrued expenses and other current liabilities 
  | 
    | 
 $ | 
 632,934 | 
   | 
    | 
 $ | 
 1,724,141 | 
   | 
  
 
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