Amfetamine, benzfetamine, and related compounds listed in 292146 are DEA Schedule II or Schedule IV controlled substances. Importers must hold a valid DEA importer registration, operate within DEA-established import quotas, and file advance notice of each shipment. CBP coordinates with DEA at the port of entry.

The distinction is whether the ring system is aromatic (benzene-type, with delocalized pi electrons) or alicyclic (saturated or partially unsaturated but non-aromatic). Aniline and toluidines contain a benzene ring and are aromatic; cyclohexylamine, for example, is alicyclic and falls under 292130. The compound's structural formula and IUPAC name are the primary classification guides.