| http://www.w3.org/ns/prov#value | - The alkenylation and aralkylation agents may comprise substituents such as lower alkyl and/or sulfo- or carboxyl alkyl, hydroxyl, nitrile, thiocyanate, cyanate, thiol and amino, wherein amino may be NH2, NHR??? or NR???R??? and wherein R??? and R??? in turn are lower alkyl.
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