| http://www.w3.org/ns/prov#value | - nitro, amine, or halide, most preferably Cl, Br, or I; R5 is lower alkyl alcohol, preferably of from 1 to 6 carbon atoms, more preferably of from 1 to 4 carbon atoms, CH2C6H5, polyether, such as a polyethyleneglycol or a polypropylene glycol, alkyl of from 1 to 22 carbon atoms, more preferably of from 1 to 10 carbon atoms, most preferably of from 1 to 6 carbon atoms, alkoxy, of from 1 to 22 carbon
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