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Inventory
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventory

6. Inventory

Inventory consists of the following (in thousands):

 

 

 

September 30, 2019

 

 

December 31, 2018

 

Raw materials

 

$

9,263

 

 

$

10,112

 

Work in process

 

 

11,664

 

 

 

20,604

 

Finished goods

 

 

3,245

 

 

 

8,316

 

Total inventory

 

$

24,172

 

 

$

39,032

 

 

As of September 30, 2019, total inventory included $1.2 million related to SUSTOL and $23.0 million related to CINVANTI. As of December 31, 2018, total inventory included $6.7 million related to SUSTOL and $32.3 million related to CINVANTI. In addition, cost of product sales for the three and nine months ended September 30, 2019 included charges of $1.7 million and $3.3 million, respectively, resulting from the write-off of short-dated SUSTOL inventory.