138094
Namesake His name is associated with " Dragendorff 's reagent " , which is a solution of potassium bismuth iodide used to ascertain the presence of alkaloid s , along with " Dragendorff 's test " , a qualitative test formerly used for bile .
 Dragendorff, Dragendorff
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dragendorff, Dragendorff