Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 16,047,669	$ 13,922,972
Prepaid expenses	1,259,881	465,693
Total current assets	17,307,550	14,388,665
Property and equipment, net	48,445	57,166
Right-of-use assets	724,916	797,913
In-process research and development	3,190,000	3,190,000
Goodwill	1,870,924	1,870,924
Other assets	128,289	127,939
Total assets	23,270,124	20,432,607
Current liabilities:
Accounts payable	850,066	491,557
Accrued expenses	412,842	493,636
Operating lease liabilities, current	273,093	266,696
Total current liabilities	1,536,001	1,251,889
Contingent consideration	2,460,000	2,430,000
Deferred tax liability	18,752	18,752
Operating lease liabilities, non-current	472,382	540,751
Derivative financial instruments, at estimated fair value-warrants	15,303	5,623
Total liabilities	4,502,438	4,247,015
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock—$0.0001 par value per share; 120,000,000 shares authorized, 6,074,122 and 3,760,255 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	606	375
Additional paid in capital	104,459,486	97,651,006
Accumulated deficit	(87,409,247)	(83,182,630)
Total stockholders' equity	18,767,686	16,185,592
Total liabilities and stockholders' equity	23,270,124	20,432,607
Series A
Stockholders' equity:
Convertible preferred stock	855,808	855,808
Series C
Stockholders' equity:
Convertible preferred stock	$ 861,033	$ 861,033