20452
Structure - activity relationship studies indicated that 5 - ( p - toluenesulfonylamino ) phthalimide moiety is a favorable scaffold to exert the alpha - glucosidase inhibitory activity and substituents at the N2 position have considerable influence on the efficacy of the inhibition activities .
 Chemical: 5 - ( p - toluenesulfonylamino ) phthalimide
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: 5 - ( p - toluenesulfonylamino ) phthalimide