| http://www.w3.org/ns/prov#value | - Exemplary of these aromatic compounds are aromatic hydrocarbons such as benzene, naphthalene, biphenyl, anthracene, etc., and their monoand dialkyl-substituted derivatives such as toluene, o-, m-, and p-xylene, ethylbenzene, cumene, cymene, etc., nitro-substituted aryls such as nitrobenzene, o-nitrotoluene, p-nitrotoluene, etc., carboxy-substituted aryls such as benzoic acid, 0-, mand p-toluic aci
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