Accounts Payable and Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2012

Accounts Payable and Accrued Expenses [Abstract]

Summary of accounts payable and accrued expenses

	December 31, 2012		December 31, 2011
Research and development expenses	$	1,339,851	$	1,316,095
Professional fees		735,990		715,672
General and administrative expenses		121,554		99,746
Compensation related expenses		81,003		78,716
	$	2,278,398	$	2,210,229