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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily by amino-function
Chapter notes require classification in the last numerical heading; amine-function compounds (2921) precede pyrazole compounds (2933).
If pre-formulated as analgesic tablet intermediate
Medicaments in measured doses shift to Chapter 30, excluding bulk Chapter 29 classification.
If containing additional purine ring structure
Purine derivatives have separate specific headings later in 2933, taking precedence over pyrazole classification.
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Import Tips & Compliance
• Include NMR spectra confirming pyrazole ring integrity; declare DEA watch-list status if applicable; use proper UN packaging for toxic solids during 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.
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.
Phenazone Salicylate
Phenazone salicylate combines phenazone with salicylic acid for topical analgesic applications. Classified under HTS 2933.11.00.00 following Chapter Note 5(C)(2) with the later-occurring phenazone base. Used in ear drops and compounded prescriptions.