Products described in additional U.S. note 3 to section VI
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: > Compounds containing in the structure a phenothiazine ring-system (whether or not hydrogenated), not further fused: > 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 2934.30.43.00
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.
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.