28331
A method of simultaneous determination of five flavonoids during the growth of Fructus Sophorae by beta - cyclodextrin ( beta - CD - ) modified capillary zone electrophoresis was developed .
 flavonoids, beta - cyclodextrin, beta - CD
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 flavonoids, beta - cyclodextrin, beta - CD