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Accrued Liabilities
 6 Months Ended
Jun. 30, 2013
Accrued Liabilities  
Accrued Liabilities

8.  Accrued Liabilities

 

Accrued Liabilities are comprised of the following (and are included within the accounts payable and accrued expenses line item on the consolidated balance sheets), in thousands:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

June 30,

 

December 31,

 

 

2013

 

2012

 

 

 

(unaudited)

 

 

 

Accrued clinical trial and clinical supply costs

 

$
2,043 

 

$
3,335 

Accrued compensation

 

 
2,617 

 

 
2,492 

Interest payable

 

 
1,125 

 

 
213 

Other accrued liabilities

 

 
3,774 

 

 
1,820 

 

 

$
9,559 

 

$
7,860 

 

Accrued clinical trial and clinical supply costs consist primarily of investigator fees, contract research organization services and laboratory costs.  Other accrued expenses consist primarily of marketing, sales and miscellaneous accrued expenses.