Promethazine Hydrochloride USP
Promethazine hydrochloride is a phenothiazine derivative used as an antihistamine, antiemetic, and sedative, containing a phenothiazine ring-system. It falls under HTS 2934.30.43.00 as a specific product listed in additional U.S. note 3 to section VI for nucleic acids, salts, or other heterocyclic compounds with this ring structure. This classification applies to its chemically defined heterocyclic nature without further fusion.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically listed in additional U.S. note 3
Phenothiazine ring compounds without note 3 designation fall under the general 'other' subheading in 2934.30.
If imported as finished pharmaceutical dosage form like tablets
Formulated medicaments containing promethazine shift to Chapter 30 as finished drugs rather than bulk chemicals.
If classified primarily by other heterocyclic structure
Certain non-phenothiazine heterocyclics or derivatives may fall under heading 2933 for other heterocyclic compounds.
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Import Tips & Compliance
• Verify purity certificates and USP compliance documentation to meet FDA import requirements; declare exact chemical composition to avoid reclassification; check for additional note 3 restrictions under Section VI
Related Products under HTS 2934.30.43.00
Thiopropazate Hydrochloride
Thiopropazate hydrochloride is a phenothiazine antipsychotic agent with a core phenothiazine ring-system, used in psychiatric treatments. Classified under HTS 2934.30.43.00 per additional U.S. note 3 to section VI due to its specific heterocyclic structure and chemical definition. It qualifies as a non-fused phenothiazine derivative.
Propiomazine Hydrochloride
Propiomazine hydrochloride, a phenothiazine with sedative and antiemetic properties, features a hydrogenated phenothiazine ring-system. It is included in HTS 2934.30.43.00 under additional U.S. note 3 to section VI for qualifying heterocyclic compounds. This bulk chemical form is not further fused.
Perphenazine Powder
Perphenazine is a piperazine phenothiazine antipsychotic with the defining ring-system, used for nausea and psychosis treatment. HTS 2934.30.43.00 applies via additional U.S. note 3 to section VI for these listed heterocyclic products. It remains as a separate chemically defined compound.
Fluphenazine Decanoate
Fluphenazine decanoate, a long-acting phenothiazine neuroleptic ester, contains the core phenothiazine ring without further fusion. Classified in HTS 2934.30.43.00 as per additional U.S. note 3 to section VI for esters of such acid-function compounds. The ester remains with the later-occurring heading.
Trimeprazine Tartrate
Trimeprazine tartrate is a phenothiazine antihistamine with sedative effects, featuring the ring-system structure. It qualifies for HTS 2934.30.43.00 under additional U.S. note 3 to section VI as a salt of a listed heterocyclic compound. Inorganic-organic salt classification follows the organic component.
Methotrimeprazine Base
Methotrimeprazine (levomepromazine) base is a phenothiazine analgesic and antipsychotic with the specified ring-system. HTS 2934.30.43.00 covers it via additional U.S. note 3 to section VI for chemically defined phenothiazines. Used in pure form for pharmaceutical synthesis.