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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used primarily as a hormone-stimulating factor intermediate
Per heading 2937 note (b), hormone analogues/intermediates classify there if primary hormonal use, occurring later in chapter order.
If nitrogen-function emphasized over nitrile
Other nitrogen-function compounds (not nitro/nitroso) in 2929, but Chapter Note 3 prioritizes last numerical heading (2926).
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Import Tips & Compliance
• Dual end-use requires specifying primary application in entry summary to align with tariff intent
• Include stabilizer analysis to ensure additions comply with Chapter Note 1(g) for identification/safety
Related Products 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.