Any compound (not being Methoxyphenamine or a compound for the time being specified in sub-paragraph (a) above) structurally derived from Phenethylamine, an N-alkylphenethylamine, ɑ-methylphenethylamine, an N-alkyl-ɑ-methylphenethylamine, ɑ-ethylphenethylamine, or an N-alkyl-ɑ-ethylphenethylamine by substitution in the ring to any extent with alkyl, alkoxy, aklylenedioxy or halide substituents, whether or not further substituted in the ring by one or more other univalent substituents.