Use this section to define the functionality that you require to be present in your monomer list. Note that each query is treated independently by the search engine. Thus to specify primary or secondary amines it is only necessary to click the "Primary or secondary amine (aliphatic or aromatic)" button; it is not also necessary to click the aliphatic and aromatic amines on as well.

carboxylic acid
Secondary aliphatic or aromatic amine
beta keto ester
alpha halo ketone
nitrile
others...

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