N-Methylphenazone
N-Methylphenazone is a simple N-alkylated derivative used in organic synthesis and as a pharmaceutical intermediate. Falls under HTS 2933.11.00.00 as a phenazone derivative with unfused pyrazole ring per heading specification. High-purity grade for research applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not recognized as standard phenazone derivative
Other specific pyrazoles have separate statistical suffixes.
If classified by carboxamide function
Nitrogen function headings precede heterocyclics in chapter order.
If personal effects importation
Personal use chemicals may qualify for duty-free entry under special provisions.
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Import Tips & Compliance
• Provide synthetic route documentation tracing to phenazone; HPLC purity >98% required; DOT hazard class 6.1 for poison transport
Related Products under HTS 2933.11.00.00
Phenazone (Antipyrine)
Phenazone, also known as antipyrine, is a pyrazolone derivative used historically as an analgesic and antipyretic. It falls under HTS 2933.11.00.00 as a specific heterocyclic compound containing an unfused pyrazole ring. This chemically defined organic compound is imported in pure form for pharmaceutical manufacturing.
Aminophenazone
Aminophenazone is a derivative of phenazone with an amino group substitution, used in pharmaceutical synthesis. Classified under HTS 2933.11.00.00 due to its status as a phenazone derivative containing the characteristic unfused pyrazole ring. Imported as a high-purity intermediate for analgesic production.
Propyphenazone
Propyphenazone is an N-propyl derivative of phenazone used in combination analgesics. It qualifies for HTS 2933.11.00.00 as a direct phenazone derivative with the unfused pyrazole ring structure specified in the heading. Typically imported in crystalline powder form for drug formulation.
Isopropphenazone
Isopropphenazone, an isopropyl-substituted phenazone derivative, serves as a pharmaceutical intermediate. Falls under HTS 2933.11.00.00 due to its explicit inclusion as a phenazone derivative with pyrazole ring. Used in synthesis of modern NSAIDs.
Phenzone (Phenylethylphenazone)
Phenzone features a phenylethyl group attached to the phenazone structure, used in anti-inflammatory formulations. Classified in HTS 2933.11.00.00 as a phenazone derivative maintaining the core pyrazole ring. Imported for further pharmaceutical processing.
Metamizole Sodium (Analgin)
Metamizole sodium, a water-soluble salt derivative of phenazone, is widely used as a potent analgesic. Though a salt, classified under HTS 2933.11.00.00 per Chapter Note 5(C)(1) with the parent phenazone compound. Imported as white crystalline powder for injection formulations.