14340
Compounds H4 and H9 showed good DPP - 4 inhibition and more than 100 - fold selectivity over DPP - 7 and DPP - 8 .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None