Levorphanol Sulfate
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as sugar ethers/esters derivative
Chapter exclusions and subchapter rules push certain modified heterocyclics to heading 2940.
If for vaccine or toxin use in therapeutic preparations
Immunological products consistently exclude Chapter 29 per chapter note exclusions.
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Import Tips & Compliance
• 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
Related Products under HTS 2933.41.00.00
Levorphanol Tartrate
Levorphanol tartrate is the tartrate salt form of levorphanol, a potent opioid agonist chemically classified as a morphinan derivative with an isoquinoline ring system. It falls under HTS 2933.41.00.00 as a specific salt of levorphanol (INN), meeting Chapter 29 requirements for separate chemically defined organic compounds with nitrogen hetero-atoms. This pharmaceutical intermediate or active ingredient is used in pain management formulations.
Levorphanol Hydrochloride
Levorphanol hydrochloride is the hydrochloride salt of levorphanol, a synthetic opioid analgesic with a quinoline/isoquinoline ring structure. Classified under HTS 2933.41.00.00 per Chapter 29 note (C)(1) for inorganic salts of organic compounds following the parent organic compound's heading. Used primarily as bulk API for injectable or oral pain relief medications.
Pharmaceutical Grade Levorphanol Base
Pure levorphanol (base form, INN) is the parent morphinan opioid with quinoline ring system, imported at >99% purity for salt formation. Falls under HTS 2933.41.00.00 covering both the INN compound and its salts as chemically defined heterocyclics. Used exclusively as active pharmaceutical ingredient precursor.
Levorphanol (S)-Tartrate Dihydrate
The dihydrate form of (S)-levorphanol tartrate maintains the core isoquinoline opioid structure with added water crystallization. HTS 2933.41.00.00 classification holds as salt of specified INN, with hydration not affecting Chapter 29 organic compound status. Bulk import for sterile injectable opioid production.