| http://www.w3.org/ns/prov#value | - Typically n can range from 1-5, where Ra, exclusive of hydrogen, is a substituent independently selected from groups such as alkyl, hydroxy, hydroxyalkyl, hydroxyalkylaryl, alkylaryl, ethers, haloalkyls, alkoxy, carboxylic acid, ester of carboxylic acid, alkylcarbonates, alkylaldehydes, ketones.
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