Any compound (not being Pipradrol
structurally derived from piperidine, pyrrolidine, azepane, morpholine or pyridine by substitution at a ring carbon atom with a diphenylmethyl group, whether or not the compound is further modified in any of the following ways, that is to say,
- by substitution in any of the phenyl rings to any extent with alkyl, alkoxy, haloalkyl or halide groups;
- by substitution at the methyl carbon atom with an alkyl, hydroxyalkyl or hydroxy group;
- by substitution at the ring nitrogen atom with an alkyl, alkenyl, haloalkyl or hydroxyalkyl group.