Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share

The following shares of common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	September 30, 2021		September 30, 2020
Series A warrants for common stock		7,790,879		7,802,241
Series B warrants for common stock		2,524,732		2,574,727
Options to purchase common stock		4,880,267		4,246,167
Warrants for common stock		727,122		727,122
Total potential dilutive shares		15,923,000		15,350,257