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Condensed Statements of Cash Flows - USD ($)
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash Flows From Operating Activities    
Net loss $ (5,351,667) $ (5,450,910)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation of property and equipment 33,281 28,229
Stock-based compensation 656,913 583,865
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets (251,091) (189,021)
License fee and expense reimbursements receivables 2,057,808 0
Deferred license costs 800,000 0
Accounts payable 353,452 (288,600)
Accrued compensation (579,940) (568,864)
Accrued expenses and other current liabilities (291,600) (32,623)
Deferred license fee (2,000,000) 0
Deferred rent (1,002) (3)
Net Cash Used In Operating Activities (4,573,846) (5,917,927)
Cash Flows From Investing Activities    
Purchases of property and equipment [1] (344,320) (93,930)
Net Cash Used In Investing Activities (344,320) (93,930)
Cash Flows From Financing Activities    
Proceeds from sale of common stock and warrants in private placement [2] 0 5,569,136
Proceeds from exercise of stock warrants 1,530,990 0
Repayments of notes payable (77,604) (52,051)
Payment of offering issuance costs 0 (1,738)
Net Cash Provided By Financing Activities 1,453,386 5,515,347
Net Decrease in Cash and Cash Equivalents (3,464,780) (496,510)
Cash and cash equivalents - Beginning of Period 28,371,828 14,152,601
Cash and cash equivalents - End of Period 24,907,048 13,656,091
Supplemental Disclosure of Cash Flow Information:    
Interest 3,997 1,699
Supplemental Disclosure of Non-Cash Investing and Financing Activities    
Accrual of private placement offering costs 0 115,656
Purchase of insurance premium financed by note payable $ 705,360 $ 475,216
[1] Includes $203,799 of leasehold improvements and $140,521 of equipment purchases for the three months ended March 31, 2021.
[2] Includes gross proceeds of $5,984,931, less issuance costs of $415,795 deducted directly from the private placement proceeds.