19307
In this study , the effect of addition of ethanol on solubility of bruicne was investigated and 20 % ethanol was added into PBS to obtain 10mg / mL brucine solution .
 Chemical: ethanol; Chemical: bruicne; Chemical: ethanol; Chemical: brucine
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: ethanol; Chemical: bruicne; Chemical: ethanol; Chemical: brucine