Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Significant Accounting Policies

Schedule of employee service share-based compensation, allocation of recognized period costs

	Year Ended
	2020		2019
Research and development	$	583,212	$	419,801
General and administrative		789,970		616,033
	$	1,373,182	$	1,035,834

Schedule of key assumption of fair value of stock options granted

	2020		2019
Expected term	5.83 years		5.67 years
Risk-free interest rate	0.93	%	1.82	%
Expected dividend yield	—		—
Expected volatility	100.32	%	80.38	%

Schedule of fair value, assets measured on recurring basis

	December 31,		Fair value measurements at reporting date using
	2020		Level 1 inputs		Level 2 inputs		Level 3 inputs
Assets:
Cash equivalents - money market funds	$	18,399,585	$	18,399,585	$	—	$	—
Commercial paper		449,992		—		449,992		—
	$	18,849,577	$	18,399,585	$	449,992	$	—
Liabilities:
Warrant liability	$	1,170,051		—		—		1,170,051
	$	20,019,628	$	18,399,585	$	449,992	$	1,170,051

	December 31,		Fair value measurements at reporting date using
	2019		Level 1 inputs		Level 2 inputs		Level 3 inputs
Assets:
Cash equivalents - money market funds and commercial paper	$	8,921,249	$	6,575,862	$	2,345,387	$	—
Corporate bonds, notes and commercial paper		4,340,041		—		4,340,041		—
	$	13,261,290	$	6,575,862	$	6,685,428	$	—
Liabilities:
Warrant liability	$	4,591,200		—		—		4,591,200
	$	17,852,490	$	6,575,862	$	6,685,428	$	4,591,200

Schedule of computation of basic and diluted earnings (loss) per share of common stock

	Year Ended December 31,
	2020		2019
Basic loss per share attributable to common stock:
Numerator
Net loss	$	(20,964,819)	$	(13,007,344)
Denominator
Weighted avg. common shares outstanding		55,688,085		25,882,273
Basic loss per share attributable to common stock	$	(0.38)	$	(0.50)
Diluted loss per share attributable to common stock:
Numerator
Net loss	$	(20,964,819)	$	(13,007,344)
Denominator
Weighted avg. common shares outstanding		55,688,085		25,882,273
Diluted loss per share attributable to common stock	$	(0.38)	$	(0.50)

Schedule of antidilutive securities excluded from computation of earnings per share

	December 31,
	2020	2019
Stock options	3,564,458	2,310,485
Unvested restricted stock units	—	661,307
Warrants	1,944,366	12,000,000