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Inventory
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventory

6. Inventory

Inventory consists of the following (in thousands):

 

 

 

June 30, 2022

 

 

December 31, 2021

 

Raw materials

 

$

21,831

 

 

$

21,193

 

Work in process

 

 

20,115

 

 

 

20,935

 

Finished goods

 

 

19,372

 

 

 

6,254

 

Total inventory

 

$

61,318

 

 

$

48,382

 

 

As of June 30, 2022, total inventory included $37.4 million related to ZYNRELEF, $21.4 million related to CINVANTI, and $2.5 million related to SUSTOL. As of December 31, 2021, total inventory included $23.6 million related to ZYNRELEF, $23.1 million related to CINVANTI, and $1.7 million related to SUSTOL. For the three and six months ended June 30, 2022, cost of product sales included charges of $2.5 million resulting primarily from the write-off of short-dated ZYNRELEF inventory. For the three and six months ended June 30, 2021, cost of product sales included charges of $3.1 million resulting from the write-off of short-dated SUSTOL inventory.