Levorphanol Sulfate from China
Levorphanol sulfate represents the sulfate salt variant of levorphanol (INN), a heterocyclic opioid with nitrogen-containing isoquinoline structure. HTS 2933.41.00.00 applies directly as specified salts of this INN compound, per Chapter 29 scope for chemically defined organic compounds. Primarily imported as high-purity intermediate for analgesic formulations.
Duty Rate — China → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include pharmacopeial compliance (USP/EP) documentation; declare exact salt form to match HTS specificity
• Watch for anti-dumping scrutiny on pharma APIs from certain origins