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Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense for Options Granted Reflected in the Consolidate Statement of Operations and Comprehensive Loss
Stock-based compensation expense for options granted is reflected in the condensed consolidated statements of operations and comprehensive loss as follows:
Three months ended March 31,
20202019
General and administrative$103,477  $271,268  
Research and development119,036  143,934  
Total$222,513  $415,202  
Schedule of Stock Option Activity
The following table summarizes the stock option activity under the Plans:
Number of SharesWeighted Average Exercise PriceWeighted Average Remaining Contractual Life (Years)Aggregate Intrinsic Value
Options outstanding at December 31, 2019731,189  $4.59  8.0$24,028  
Granted1,766,381  $0.51  
Forfeited(799) $7.56  
Options outstanding at March 31, 20202,496,771  $1.70  9.2$23  
Options exercisable at March 31, 2020416,464  $5.00  6.7$—