Accrued Expenses (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020
Accrued Expenses
Compensation	$ 753,808	$ 579,618
Severance and related costs		9,521
Research and development	808,780	2,890,333
Interest payable	12,909	3,691
Professional fees		132,085
Lease termination obligation		3,971,111
Other accrued expenses	150,224	170,951
Accrued expenses, total	$ 1,725,721	$ 7,757,310