9404
A series of naphthyridinol analogs of alpha - tocopherol ( alpha - TOH , right ) with varying sidechain substitution was synthesized to determine how systematic changes in the lipophilicity of these potent antioxidants impact their radical - trapping activities in lipid bilayers , regenerability by water - soluble reductants , and binding to human tocopherol transport protein ( TTP ) .
 Chemical: naphthyridinol; Chemical: alpha - tocopherol; Chemical: alpha - TOH; Chemical: tocopherol
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: naphthyridinol; Chemical: alpha - tocopherol; Chemical: alpha - TOH; Chemical: tocopherol