Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Stock-Based Compensation (Details 1)

v3.19.1
Stockholders' Equity and Stock-Based Compensation (Details 1) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Research and development expenses $ 922,235 $ 911,034
General and administrative expenses 1,357,762 2,223,590
Total stock-based compensation expense 335,013 1,273,035
Employee Stock Option [Member]    
Research and development expenses 170,134 503,217
General and administrative expenses 164,879 769,818
Total stock-based compensation expense $ 335,013 $ 1,273,035