prov:value
| - wherein B represents a halogen atom, in particular a bromine or chlorine atom, or an alkyl or alkoxy group, in particular methyl or methoxy, m is 1 or 2, and Z1, Z2, Z3 and Z4 represent in each case a hydrogen atom, an amino or hydroxy group which is optionally substituted by an alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, a nitro group or an amino or hydroxy group which is substitute
|