10461
DPA - 713 is the lead compound of a recently reported pyrazolo [ 1 , 5 - a ] pyrimidineacetamide series , targeting the translocator protein ( TSPO 18 kDa ) , and as such , this structure , as well as closely related derivatives , have been already successfully used as positron emission tomography radioligands .
 Chemical: DPA - 713; Chemical: pyrazolo [ 1 , 5 - a ] pyrimidineacetamide
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: DPA - 713; Chemical: pyrazolo [ 1 , 5 - a ] pyrimidineacetamide