Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable And Accrued Liabilities Current [Abstract]
Accrued contract manufacturing	$ 1,479,771	$ 655,207
Accrued contract research and regulatory consulting	1,070,664	418,000
Accrued legal	350,517	152,340
Accrued payroll and payroll taxes	267,159	153,238
Accrued license fees	240,041
Accrued accounting, audit, and tax fees	181,200	147,850
Accrued miscellaneous expenses	102,999	56,598
Accrued consulting	88,750	109,073
Accrued precommercial costs		252,125
Total accrued expenses	$ 3,781,101	$ 1,944,431