| http://www.w3.org/ns/prov#value | - Hetrogroups that is groups containing atoms other than hydrogen and carbon and classified as moderately and strongly activating groups include alkoxides, --OCH3, --OC2 H5 etc.; --NHCOCH3 ; --OH and --NH2 (--NHR, NR) where R is a radical, may also be used, keeping in mind the potential for introduction of oxygen and nitrogen.
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