4202
The K ( i ) for sulphanilamide was determined to be 3 . 57 . 10 ( - 5 ) M and sulphanilamide showed competitive inhibition , which makes it a suitable ligand for constructing a Sepharose 4B - L - tyrosine affinity matrix .
 Chemical: sulphanilamide; Chemical: sulphanilamide; Chemical: Sepharose 4B; Chemical: L - tyrosine
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: sulphanilamide; Chemical: sulphanilamide; Chemical: Sepharose 4B; Chemical: L - tyrosine