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Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2020
Stockholders' Equity Note [Abstract]  
Schedule of stock option activity
   

Number of

Shares

    

Weighted- average

Exercise

Price

    

Weighted-average

Remaining

Contractual

Term (years)

    

Aggregate

Intrinsic

Value

  
Outstanding at January 1, 2020     3,417,000     $ 5.77       9.03       -  
Options granted     -     $ -       -       -  
Options exercised     -     $ -       -       -  
Options cancelled     -     $ -       -       -  
Outstanding at June 30, 2020     3,417,000     $ 5.77       8.53     $ 2,391,900  
Exercisable at June 30, 2020     1,824,951     $ 7.16       7.86     $ 403,275  
Schedule of stock-based compensation expense
    Three
Months
Ended
June 30,
2020		     Three
Months
Ended
June 30,
2019		     Six Months Ended
June 30,
2020		     Six Months Ended
June 30,
2019		  
Research and development   $ 138,609     $ 426,308     $ 277,218     $ 852,616  
General and administrative     543,096       548,388       1,086,192       1,096,779  
Total   $ 681,705     $ 974,696     $ 1,363,410     $ 1,949,395