4-Cyano-2-dimethylamino-4,4-diphenylbutane
Nitrile-function compounds: > Fenproporex (INN) and its salts; Methadone (INN) intermediate (4-cyano-2-dimethylamino-4,4- diphenylbutane): > 4-Cyano-2-dimethylamino-4,4-diphenylbutane
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2926.30.20.00
Methadone Intermediate (4-Cyano-2-Dimethylamino-4,4-Diphenylbutane) Powder
High-purity powdered form of 4-cyano-2-dimethylamino-4,4-diphenylbutane, a nitrile-function compound serving as the key intermediate for methadone synthesis. Explicitly covered by HTS 2926.30.2000 due to its chemical structure and pharmaceutical application. Meets Chapter 29 criteria as a separate chemically defined organic compound without exclusions.
4-Cyano-2-dimethylamino-4,4-diphenylbutane
This is a specific nitrile-function organic compound used primarily as an intermediate in the synthesis of methadone (INN), a pharmaceutical opioid. It falls under HTS 2926.30.2000 as it is explicitly named in the tariff description for methadone intermediates with a cyano group directly linked to the carbon chain. The compound consists of a butane backbone with dimethylamino, diphenyl, and cyano substituents, meeting Chapter 29 requirements for separate chemically defined compounds.
4-Cyano-2-dimethylamino-4,4-diphenylbutane Hydrochloride
The hydrochloride salt form of 4-cyano-2-dimethylamino-4,4-diphenylbutane, a chemically defined salt of the methadone intermediate. Classified under HTS 2926.30.2000 as the base compound's salt, per Chapter Note 1(C)(1) directing salts to the heading of the parent organic compound. Used in pharmaceutical production with added stabilizer for safe transport.
Fenproporex Precursor Base (4-Cyano-2-Dimethylamino-4,4-Diphenylbutane)
4-Cyano-2-dimethylamino-4,4-diphenylbutane serving dual role as precursor for both fenproporex (appetite suppressant) and methadone production. Tariffed under HTS 2926.30.2000 for its explicit chemical identification as a nitrile-function methadone intermediate. Qualifies under Chapter 29 as a pure organic compound used in hormone-related pharmaceutical synthesis.