Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Accounts Payable And Accrued Liabilities Current [Abstract]
Accrued contract manufacturing	$ 1,037,934	$ 655,207
Accrued contract research and regulatory consulting	804,055	418,000
Accrued legal	415,959	152,340
Accrued payroll and payroll taxes	271,170	153,238
Accrued license fees	229,128
Accrued accounting, audit, and tax fees	107,306	147,850
Accrued miscellaneous expenses	72,938	56,598
Accrued consulting	15,158	109,073
Accrued precommercial costs		252,125
Total accrued expenses	$ 2,953,648	$ 1,944,431