Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 2,070,075	$ 1,374,992
Prepaid expenses and other current assets	191,783	628,745
Total current assets	2,261,858	2,003,737
Equipment and furnishings, net	6,711	18,546
Other assets	7,703	7,703
Operating lease right-of-use assets	31,610	216,786
Total assets	2,307,882	2,246,772
Current liabilities:
Accounts payable	1,202,689	975,944
Accrued expenses and other current liabilities	964,233	1,015,501
Current portion of operating lease obligations	33,606	196,081
Total current liabilities	2,200,528	2,187,526
Operating lease liabilities, net of current portion		33,526
Total liabilities	2,200,528	2,221,052
Preferred Stock, Series C 10% Convertible, $1,000 par value, 0 and 2,752 shares issued and outstanding at December 31, 2023 and 2022, respectively		1,343,684
Commitments and contingencies
Stockholders’ equity (deficit):
Preferred Stock, $0.01 par value, 833,333 shares authorized, including 50,000 shares of Series B Junior Participating Preferred Stock; no shares issued and outstanding at December 31, 2023 and 2022, respectively
Common stock, $0.001 par value, 62,393,940 shares authorized; 495,092 and 450,374 shares issued and outstanding at December 31, 2023 and 2022, respectively	495	450
Additional paid-in capital	488,612,890	487,519,251
Accumulated deficit	(488,506,031)	(488,837,665)
Total stockholders’ equity (deficit)	107,354	(1,317,964)
Total liabilities and stockholders’ equity (deficit)	$ 2,307,882	$ 2,246,772