Cetirizine Hydrochloride
Cetirizine hydrochloride is a second-generation antihistamine used primarily for treating allergic rhinitis and urticaria. It features a piperazine heterocyclic ring with nitrogen hetero-atoms and an aromatic structure, classifying it under HTS 2933.99.26.00 as an aromatic antihistamine drug.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically used as a drug
Non-drug heterocyclic compounds fall under the general 'other' category.
If imported as finished tablets or capsules
Formulated medicaments containing antihistamines are classified in Chapter 30.
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Import Tips & Compliance
• Require FDA approval and Drug Master File (DMF) submission for active pharmaceutical ingredients
• Ensure Certificate of Analysis (CoA) verifies purity >99% and absence of impurities
• Avoid misclassification as non-drug intermediates by providing clinical use documentation
Related Products under HTS 2933.99.26.00
Loratadine
Loratadine is a tricyclic antihistamine with nitrogen-containing heterocyclic rings, used for allergy relief without causing drowsiness. Its aromatic modified structure qualifies it as an antihistamine drug under HTS 2933.99.26.00.
Fexofenadine Hydrochloride
Fexofenadine hydrochloride, a carboxylic acid derivative antihistamine, contains piperidine and aromatic rings with nitrogen hetero-atoms. It is imported as the active ingredient for allergy medications under HTS 2933.99.26.00.
Desloratadine
Desloratadine, an active metabolite of loratadine, is a potent H1-receptor antagonist with tricyclic nitrogen-heterocyclic structure. As an aromatic antihistamine drug, it falls under HTS 2933.99.26.00.
Levocetirizine Dihydrochloride
Levocetirizine dihydrochloride is the R-enantiomer of cetirizine, featuring piperazine nitrogen hetero-atoms in an aromatic framework. Classified as an antihistamine drug under HTS 2933.99.26.00.
Rupatadine Fumarate
Rupatadine fumarate is a dual antihistamine/PAF antagonist with nitrogen-heterocyclic and aromatic components. It qualifies as an antihistamine drug under HTS 2933.99.26.00 per chapter notes on salts.
Bilastine
Bilastine is a novel antihistamine with piperidine nitrogen hetero-atom in its aromatic heterocyclic structure, used for allergic rhinoconjunctivitis. It is specifically covered as an antihistamine drug in HTS 2933.99.26.00.