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v3.20.4

Supplementary Balance Sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Components of Property and Equipment | Property and equipment consisted of the following:
| As of December 31,
| 2020 |  | 2019
Furniture and office equipment | $ | 797,739 |  |  | $ | 775,030 |
Leasehold improvements | 1,962,230 |  |  | 1,962,230 |
Laboratory equipment | 867,750 |  |  | 744,856 |
| 3,627,719 |  |  | 3,482,116 |
Less—accumulated depreciation | (3,004,025) |  |  | (2,604,293) |
Property and equipment, net | $ | 623,694 |  |  | $ | 877,823 |
Components of Accrued Liabilities | Accrued liabilities consisted of the following:
| As of December 31,
| 2020 |  | 2019
Accrued compensation | $ | 1,523,321 |  |  | $ | 1,003,383 |
Preferred stock dividend | 389,495 |  |  | 365,255 |
Clinical trials | 1,557,134 |  |  | 1,504,660 |
Research agreements and services | 66,593 |  |  | 181,408 |
Director fees | 92,500 |  |  | 67,500 |
Professional fees and outside services | 38,180 |  |  | 21,000 |
Patent, license and other fees | 117,440 |  |  | 69,950 |
Other accrued liabilities | 66,100 |  |  | 46,905 |
Total accrued liabilities | $ | 3,850,763 |  |  | $ | 3,260,061 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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