25042
Compounds ( 1 - 3 ) showed significant activities on DPPH free radical with the IC50 of 240 . 20 , 810 . 02 and 413 . 19 mu gml ( - 1 ) , respectively .
 Chemical: DPPH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: DPPH