Isopropphenazone
Isopropphenazone is an isopropyl-substituted derivative of phenazone, maintaining the unfused pyrazole ring. It serves as a pharmaceutical intermediate in the synthesis of active ingredients. This product is classified under tariff item 2933.11.00 as a phenazone derivative.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the substance is not a phenazone derivative but another pyrazole compound
Residual subheading for other unfused pyrazole compounds.
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
• Confirm the chemical structure and purity with a certificate of analysis to support classification
• If importing for research purposes, check if a Controlled Drugs and Substances Act exemption applies
• Keep records of the end-use to facilitate CBSA clearance
Related Products under Tariff item 2933.11.00
Aminophenazone
Aminophenazone is a derivative of phenazone (antipyrin) with an amino group substitution, retaining the unfused pyrazole ring structure. It is used primarily as an intermediate in pharmaceutical synthesis. This compound falls under tariff item 2933.11.00 as a phenazone derivative.
Metamizole Sodium (Analgin)
Metamizole sodium, also known as Analgin, is a water-soluble sodium salt of a phenazone derivative. As an inorganic salt of an organic compound, it is classified with the parent phenazone compound under Chapter Note 5(C)(1). It is used as a potent analgesic and antipyretic.
N-Methylphenazone
N-Methylphenazone is an N-alkylated derivative of phenazone, retaining the unfused pyrazole ring. It is used in organic synthesis and as a pharmaceutical intermediate. This compound is classified under tariff item 2933.11.00 as a phenazone derivative.
Phenazone (Antipyrine)
Phenazone, also known as antipyrine, is a pyrazolone derivative with an unfused pyrazole ring. It has historical use as an analgesic and antipyretic. This product is explicitly named in tariff item 2933.11.00.
Phenazone Salicylate
Phenazone salicylate is a salt formed between phenazone and salicylic acid, used in topical analgesic preparations such as ear drops. Under Chapter Note 5(C)(2), salts formed between organic compounds are classified with the compound occurring last in numerical order, which is phenazone. It falls under tariff item 2933.11.00.
Phenzone (Phenylethylphenazone)
Phenzone, also known as phenylethylphenazone, is a phenazone derivative with a phenylethyl group, retaining the unfused pyrazole ring. It is used in anti-inflammatory formulations. This compound is classified under tariff item 2933.11.00 as a phenazone derivative.