2926.30 - Fenproporex (INN) and its salts; Methadone (INN) intermediate (4-cyano-2-dimethylamino-4,4- diphenylbutane):

This HTS category, 2926.30, specifically covers certain nitrile-function compounds that are significant in the pharmaceutical and chemical industries. The primary substances classified here are Fenproporex (and its salts), a stimulant drug, and the intermediate chemical known as Methadone intermediate (4-cyano-2-dimethylamino-4,4-diphenylbutane), which is a precursor in the synthesis of Methadone. These compounds are distinguished by their specific chemical structures and their roles in regulated pharmaceutical production.

Unlike its siblings in heading 2926, which encompass broader nitrile compounds like acrylonitrile (2926.10) and dicyandiamide (2926.20), or the general "other" category (2926.90), 2926.30 is reserved for these precisely identified pharmaceutical-related nitriles. The distinction is based on the precise chemical name and its established use as a pharmaceutical agent or a critical intermediate thereof, rather than more general industrial applications of other nitrile compounds.

This category is further subdivided to differentiate between the final pharmaceutical substance and its key intermediate. Subcategory 2926.30.10.00 specifically enumerates Fenproporex (INN) and its salts, recognizing it as a distinct product. Conversely, 2926.30.20.00 identifies the Methadone intermediate, 4-cyano-2-dimethylamino-4,4-diphenylbutane, acknowledging its role as a precursor in the manufacturing process, allowing for precise tariff application based on the stage of production or whether the substance is the active pharmaceutical ingredient itself.