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Income Taxes - Schedule of deferred tax assets and liabilities (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Income Taxes    
Net operating loss carry forwards $ 28,065,000 $ 27,022,000
Orphan drug and research and development credit carry forwards 8,605,000 8,149,000
Equity based compensation 264,000 264,000
Intangibles 1,953,000 817,000
Deferred tax assets, gross 38,887,000 36,252,000
Valuation allowance (38,887,000) (36,252,000)
Net deferred tax assets $ 0 $ 0