Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Derivative Liabilities (Tables)

Note 8 - Derivative Liabilities (Tables)

6 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

Fair Value Measurements Using Significant Unobservable Inputs – Six Months Ended March 31, 2023
(Level 3)		Series G				Series H

Beginning balance at September 30, 2022		$	748,275			$	459,200
Exchange of warrants into common stock			(13,948	)			(35,330	)
Extinguishment of derivative liabilities			(734,327	)			(423,870	)
Ending balance at March 31, 2023		$	—			$	—

Fair Value Measurements Using Significant Unobservable Inputs - Six Months Ended March 31, 2022
(Level 3)		Series F				Series G				Series H

Beginning balance at September 30, 2021		$	1,000,000			$	748,275			$	459,200
Issuances			—				—				—
Adjustments to estimated fair value			—				—				—
Expiration of derivative liability			(1,000,000	)			—				—
Ending balance at March 31, 2022		$	—			$	748,275			$	459,200

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

		Series G				Series H
Closing price per share of Common Stock		$	4.10			$	4.10
Exercise price per share		$	140.00			$	80.00
Expected volatility			179.41	%			141.03	%
Risk-free interest rate			4.91	%			4.75	%
Dividend yield			-				-
Remaining expected term of underlying securities (years)			0.24				1.31

		Series G				Series H
Closing price per share of Common Stock		$	3.84			$	3.84
Exercise price per share		$	140.00			$	80.00
Expected volatility			132.97	%			122.50	%
Risk-free interest rate			4.05	%			4.14	%
Dividend yield			—				—
Remaining expected term of underlying securities (years)			0.69				1.57