Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Operating expenses:
Research and development	$ 822,444	$ 625,497	$ 2,774,924	$ 3,399,654
General and administrative	814,218	897,060	2,955,371	2,846,611
Total operating expenses	1,636,662	1,522,557	5,730,295	6,246,265
Loss from operations	(1,636,662)	(1,522,557)	(5,730,295)	(6,246,265)
Other income:
Interest income	8,597	3,089	22,868	7,425
Gain from change in fair value of warrant liability				433,392
Total other income	8,597	3,089	22,868	440,817
Net loss	$ (1,628,065)	$ (1,519,468)	$ (5,707,427)	$ (5,805,448)
Net loss per share of common stock, basic and diluted	$ (0.07)	$ (0.09)	$ (0.26)	$ (0.36)
Weighted-average shares used to compute basic and diluted net loss per share	24,128,060	17,129,649	21,623,648	16,327,385