STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Balance, shares at Sep. 30, 2019		35,231,776
Balance, amount at Sep. 30, 2019	$ 5,133,667	$ 352,318	$ 358,507,603	$ (353,726,254)
Adoption of ASC 842, Leases	2,146,195			2,146,195
Proceeds from the sale of common stock, shares		1,422,429
Proceeds from the sale of common stock, amount	13,992,439	$ 14,225	13,978,214	0
Warrant issuances	805,753	$ 0	805,753	0
Warrant exercises, shares		1,711,873
Warrant exercises, amount	15,144,240	$ 17,118	15,127,122	0
Modification of warrants	5,554	$ 0	5,554
401(k) contributions paid in common stock, shares		13,870
401(k) contributions paid in common stock, amount	163,340	$ 139	163,201	0
Stock issued to nonemployees for service, shares		79,950
Stock issued to nonemployees for service, amount	972,667	$ 799	971,868	0
Equity based compensation - employees	10,112,968	$ 0	10,112,968	0
Option exercises, shares		99,740
Option exercises, amount	338,328	$ 998	337,330	0
Purchase of stock by officers and directors, shares		20,512
Purchase of stock by officers and directors, amount	184,990	$ 205	184,785	0
Share issuance costs	(787,723)	$ 0	(787,723)	0
Shares issued for settlement of clinical research costs, shares		150,000
Shares issued for settlement of clinical research costs, amount	1,769,500	$ 1,500	1,768,000	0
Net loss	(30,255,244)	$ 0	0	(30,255,244)
Balance, shares at Sep. 30, 2020		38,730,150
Balance, amount at Sep. 30, 2020	19,726,674	$ 387,302	401,174,675	(381,835,303)
Proceeds from the sale of common stock, shares		2,610,000
Proceeds from the sale of common stock, amount	47,363,426	$ 26,100	47,337,326	0
Warrant exercises, shares		1,597,870
Warrant exercises, amount	10,007,306	$ 15,978	9,991,328	0
Modification of warrants	24,387	$ 0	24,387	0
401(k) contributions paid in common stock, shares		17,990
401(k) contributions paid in common stock, amount	201,099	$ 180	200,919	0
Stock issued to nonemployees for service, shares		75,885
Stock issued to nonemployees for service, amount	1,195,704	$ 759	1,194,945	0
Equity based compensation - employees	13,685,046	$ (20)	13,685,066	0
Option exercises, shares		149,788
Option exercises, amount	746,228	$ 1,498	744,730	0
Purchase of stock by officers and directors, shares		27,500
Purchase of stock by officers and directors, amount	220,000	$ 275	219,725	0
Share issuance costs	(274,535)	0	(274,535)	0
Net loss	(36,361,109)	$ 0	0	(36,361,109)
Equity based compensation - employees, shares		(2,000)
Balance, shares at Sep. 30, 2021		43,207,183
Balance, amount at Sep. 30, 2021	$ 56,534,226	$ 432,072	$ 474,298,566	$ (418,196,412)