Related Party Transactions (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

The following table provides a summary of the changes in convertible debt—third parties, net of unamortized discount, during the quarter ended March 31, 2013:


Balance at December 31, 2012	$	318,658
January 2013 Notes, face value		550,000
Discount on beneficial conversion feature of January 2013 Notes at issuance		(120,009	)
Discount on fair value of Series J warrant liability at issuance		(165,820	)
Repayment of January 23, 2013 Notes		(450,000	)
Conversion of January 23, 2013 Notes into common stock		(100,000	)
Conversion of July 25, 2012 Notes into common stock		(900,000	)
Amortization of debt discount to interest expense through March 31, 2013		1,168,581

Balance at March 31, 2013	$	301,410

The following table provides a summary of the changes in convertible debt – third parties, net of unamortized discount, during 2012:


Balance at December 31, 2011	$	—
July 25, 2012 Notes, face value		3,455,000
Discount on beneficial conversion feature of Notes at issuance		(1,266,665	)
Discount on fair value of Series I warrant liability at issuance		(1,957,665	)
Amortization of debt discount to interest expense through December 31, 2012		87,988

Balance at December 31, 2012	$	318,658

Related Party Transactions

Summary Of Changes In Convertible Debt

The following table provides a summary of the changes in convertible debt—related parties, net of unamortized discount, during the quarter ended March 31, 2013:


Balance at December 31, 2012	$	58,105
January 2013 Notes, face value		100,000
Discount on beneficial conversion feature of January 2013 Notes at issuance		(21,820	)
Discount on fair value of Series J warrant liability at issuance		(30,149	)
Repayment of January 23, 2013 Notes		(100,000	)
Amortization of debt discount to interest expense through March 31, 2013		69,081

Balance at March 31, 2013	$	75,217

The following table provides a summary of the changes in convertible debt – related parties, net of unamortized discount, during 2012:


Balance at December 31, 2011	$	—
July 25, 2012 Notes, face value		630,000
Discount on beneficial conversion feature of Notes at issuance		(230,970	)
Discount on fair value of Series I warrant liability at issuance		(356,969	)
Amortization of debt discount to interest expense through December 31, 2012		16,044

Balance at December 31, 2012	$	58,105