Accrued expenses (Tables)

12 Months Ended

Dec. 31, 2019

Accrued expenses

Schedule of accrued expenses

	December 31,
	2019		2018
Professional fees	$	207,917	$	80,771
Compensation and benefits		961,790		624,298
Research and development		4,992,311		2,178,086
Other		480,535		245,617
Total accrued expenses	$	6,642,553	$	3,128,772