Imidazole-4-Carboxylic Acid
Imidazole-4-Carboxylic Acid is a key intermediate for pharmaceutical synthesis, featuring the unfused imidazole ring required by heading 2933. It falls under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the carboxylic acid group affects classification in a residual subheading
Residual subheading for other nitrogen hetero-atom compounds.
If the compound is considered an amino acid derivative
Covers oxygen-function amino compounds, though the imidazole ring is the primary feature.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• As a chemical intermediate, ensure it is not put up in measured doses or for retail sale
• Provide the chemical structure and purity certificate to facilitate CBSA clearance
Related Products under Tariff item 2933.29.00
2-Imidazolidinethione (Ethylene Thiourea) Crystals
Crystalline ethylene thiourea (2-imidazolidinethione), a heterocyclic compound containing an unfused imidazole ring. It is used as a chemical intermediate in the synthesis of fungicides and as an accelerator in rubber processing.
2-Phenyl-4-Methylimidazole
2-Phenyl-4-methylimidazole, a modified aromatic imidazole derivative with a phenyl group at the 2-position and a methyl group at the 4-position. Used in photographic chemicals and as a chemical intermediate.
2-Phenylimidazole
2-Phenylimidazole, a heterocyclic compound with an unfused imidazole ring and a phenyl group at the 2-position. Used as a chemical intermediate in various applications.
2-Phenylimidazole Hydrochloride Salt
2-Phenylimidazole hydrochloride salt, a water-soluble form of 2-phenylimidazole for pharmaceutical applications. Per Chapter 29 Note 5, salts are classified with the parent organic compound.
2-Phenylimidazole Technical Grade
Technical grade 2-phenylimidazole (95-98% purity) used in epoxy resin curing agents and corrosion inhibitors. It is a heterocyclic compound with an unfused imidazole ring.
Butoconazole Nitrate
Butoconazole Nitrate is an imidazole antifungal agent featuring an unfused imidazole ring in its aromatic heterocyclic structure. It falls under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.