prov:value
| - As substituents of the benzene ring there are to be mentioned above all halogen atoms, especially chlorine and bromine, nitro, cyano, thiocyano, trifluoromethyl, alkyl, alkoxy, aryloxy, alkylmercapto, arylmercapto, alkoxycarbonyl, aryloxycarbonyl, alkoxycarbonyloxy, aryloxycarbonyloxy, alkoxysulphonyl, aminosulphonyloxy, carboxylic acid amide, acyl and acylamino radicals, and also phenylazo groups
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