Oxomemazine Base
Oxomemazine, a phenothiazine antihistamine with sedative properties, imported as free base API. Classified in HTS 2934.30.27.00 as chemically defined non-antipsychotic phenothiazine.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hydrogenated ring system
Fully hydrogenated phenothiazine ring-systems classify separately later in heading.
If as diagnostic reagent
Phenothiazine used in lab diagnostics classifies as chemical reagent in Chapter 38.
If ether/alcohol derivative emphasis
If classified primarily by ether function rather than heterocyclic ring.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify free base vs salt form with pKa/solubility data for accurate chemical definition
• Include stability studies proving non-degradation of phenothiazine ring per Chapter 29
• Document EU vs US pharmacopeia equivalence for multinational imports
Related Products under HTS 2934.30.27.00
Promethazine Hydrochloride
Promethazine hydrochloride is a phenothiazine derivative used primarily as an antihistamine, antiemetic, and sedative drug. It contains a phenothiazine ring-system and falls under HTS 2934.30.27.00 as a chemically defined other drug of this class, distinct from antipsychotics like those in 2934.30.22.
Promethazine Theoclate
Promethazine theoclate, a salt form of promethazine with theophylline-8-chlorotheophyllinate, serves as an antiemetic medication. Classified under HTS 2934.30.27.00 per Chapter 29 note (C)(1) for salts of organic compounds following the base compound's heading.
Ethopropazine Hydrochloride
Ethopropazine hydrochloride is a phenothiazine anticholinergic used for Parkinson's disease symptoms. It qualifies under HTS 2934.30.27.00 as an 'other' phenothiazine drug, separate from antipsychotics.
Isothipendyl Hydrochloride
Isothipendyl hydrochloride, a phenothiazine antihistamine, is used for allergies and as a sedative. Falls under HTS 2934.30.27.00 as a non-antipsychotic phenothiazine drug per the heading's 'other drugs' provision.
Prochlorperazine Edisylate
Prochlorperazine edisylate, a phenothiazine antiemetic with some antipsychotic properties, is classified as 'other' under HTS 2934.30.27.00 when imported as bulk API rather than specifically listed antipsychotics.
Thiethylperazine Malate
Thiethylperazine malate is a phenothiazine derivative used exclusively as an antiemetic. It qualifies for HTS 2934.30.27.00 as an other phenothiazine drug, following Chapter 29 rules for acid salts.