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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Income Tax Disclosure [Abstract]    
Stock-based compensation $ 1,687,480 $ 1,651,482
Net operating loss carryforwards 34,759,890 35,102,326
Employee benefits 56,009 54,108
Research and development tax credits 4,935,609 4,472,003
Orphan drug tax credits 1,186,582 1,168,828
Plant and equipment 959
Other deductible tempory differences 394,636 5,386
Total gross deferred tax assets 43,020,206 42,455,092
Plant and equipment (1,871)
Total gross deferred tax liabilities (1,871)
Net deferred tax liabilities (1,871)
Deferred tax asset/deferred tax liability 43,018,335 42,455,092
Less valuation allowance (43,018,335) (42,455,092)
Net deferred tax assets