Levorphanol (INN) and its salts
Heterocyclic compounds with nitrogen hetero-atom(s) only. > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Levorphanol (INN) and its salts > Levorphanol (INN) and its salts
Duty Rate (from China)
Products classified under Tariff item 2933.41.00
Levorphanol Hydrochloride
Levorphanol hydrochloride is the hydrochloride salt of levorphanol, a synthetic opioid analgesic. It retains the isoquinoline ring-system characteristic of the base compound and is classified under this tariff item as a salt of levorphanol (INN).
Levorphanol (S)-Tartrate Dihydrate
Levorphanol (S)-tartrate dihydrate is a crystalline salt of levorphanol with tartaric acid, containing water of crystallization. The hydrated form does not change the chemical identity of the salt, so it remains classified as a salt of levorphanol (INN) under this tariff item.
Levorphanol Sulfate
Levorphanol sulfate is the sulfate salt of levorphanol, a synthetic opioid with an isoquinoline ring-system. As a salt of levorphanol (INN), it is covered by this tariff item, which includes both the base compound and its salts.
Levorphanol Tartrate
Levorphanol tartrate is the tartrate salt of levorphanol, a potent opioid agonist with an isoquinoline ring-system. This tariff item covers levorphanol (INN) and its salts, including the tartrate form, regardless of the acid used for salt formation.
Pharmaceutical Grade Levorphanol Base
Pharmaceutical grade levorphanol base is the pure form of levorphanol (INN), a morphinan opioid with an isoquinoline ring-system. This tariff item explicitly covers levorphanol (INN) itself, so the base compound is classified here even when imported for subsequent salt formation.