Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating expenses:
Research and development	$ 746,882	$ 1,385,366
General and administrative	1,223,013	1,032,245
Total operating expenses	1,969,895	2,417,611
Loss from operations	(1,969,895)	(2,417,611)
Other income:
Interest income	4,629	1,433
Gain from change in fair value of warrant liability		433,392
Total other income	4,629	434,825
Net loss	$ (1,965,266)	$ (1,982,786)
Net loss per share of common stock, basic and diluted	$ (0.11)	$ (0.13)
Weighted-average shares used to compute basic and diluted net loss per share	17,484,318	15,427,037