5892
Stochastic and potentiometric microsensors based on porphyrins and polymeric surfactants such as polysodium N - undecanoyl - L - leucylvanilate and polysodium N - undecanoyl - L - vanilate were developed for enantioselective assay of pipecolic acid .
 Chemical: porphyrins; Chemical: polysodium N - undecanoyl - L - leucylvanilate; Chemical: polysodium N - undecanoyl - L - vanilate; Chemical: pipecolic acid
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: porphyrins; Chemical: polysodium N - undecanoyl - L - leucylvanilate; Chemical: polysodium N - undecanoyl - L - vanilate; Chemical: pipecolic acid