Products described in additional U.S. note 3 to section VI
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: > Other: > Other: > Other: > Products described in additional U.S. note 3 to section VI
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2933.49.60.00
Quinidine Sulfate
Quinidine sulfate is a cinchona alkaloid derivative containing a quinoline ring system, used primarily as an antiarrhythmic medication to treat heart rhythm disorders. It falls under HTS 2933.49.60.00 as a heterocyclic compound with nitrogen hetero-atom(s) only in a quinoline ring-system, specifically listed in additional U.S. note 3 to section VI for certain pharmaceutical intermediates and products. This classification applies to its pure chemical form without further fusion.
Quinine Hydrochloride
Quinine hydrochloride, a salt of the quinoline-containing alkaloid quinine, is used for malaria treatment and as a flavoring agent in tonic water. Classified under HTS 2933.49.60.00 due to its quinoline ring structure and listing in additional U.S. note 3 to section VI for specific heterocyclic compounds. The hydrochloride form remains under this heading per chapter notes on salts.
Quinidine Gluconate
Quinidine gluconate is a water-soluble salt form of quinidine with a quinoline ring, used orally for cardiac arrhythmia management. It is classified in HTS 2933.49.60.00 as a non-fused quinoline heterocyclic compound referenced in additional U.S. note 3 to section VI. Chapter note (C)(1) keeps organic salts with the parent compound.
Chloroquine Phosphate
Chloroquine phosphate contains a quinoline ring system and is used as an antimalarial and anti-inflammatory drug. This synthetic heterocyclic compound falls under HTS 2933.49.60.00 per additional U.S. note 3 to section VI, as a non-fused quinoline derivative. The phosphate salt retains classification with the parent quinoline base.
Primaquine Phosphate
Primaquine phosphate is a synthetic 8-aminoquinoline derivative used for radical cure of Plasmodium vivax malaria. It qualifies for HTS 2933.49.60.00 as a quinoline ring-system compound listed in additional U.S. note 3 to section VI, not further fused. The phosphate salt follows the parent compound per chapter classification rules.
Mefloquine Hydrochloride
Mefloquine hydrochloride features a quinoline ring and is employed as an antimalarial for prophylaxis and treatment. Classified under HTS 2933.49.60.00 for quinoline heterocycles specified in additional U.S. note 3 to section VI. Its structure fits non-fused quinoline systems without other heteroatoms.
Quinoline Yellow WS Dye Intermediate
Quinoline Yellow WS Dye Intermediate is a quinoline-based compound used in synthesizing the food colorant Quinoline Yellow. It falls under HTS 2933.49.60.00 as a non-fused quinoline heterocyclic listed in additional U.S. note 3 to section VI, prior to final dye formulation. Excluded from Chapter 32 coloring matters.
Nicotine Bitartrate
Nicotine bitartrate is a salt of nicotine, featuring a pyridine ring (isoquinoline-related) used in smoking cessation therapies. Though Chapter 29 excludes some, this synthetic form qualifies under HTS 2933.49.60.00 per additional U.S. note 3 for specific quinoline/isoquinoline compounds. Salts follow parent classification.
Praziquantel USP
Praziquantel USP contains a quinoline moiety fused in its structure but classified based on principal quinoline function, used as an anthelmintic for schistosomiasis. It is included in HTS 2933.49.60.00 via additional U.S. note 3 to section VI for specified heterocyclics. Meets non-further-fused quinoline criteria.