Ornidazole API
Ornidazole is a nitroimidazole antimicrobial used for treating anaerobic bacterial infections and protozoal diseases. This aromatic compound with unfused imidazole ring is classified under HTS 2933.29.35.00 pursuant to additional U.S. note 3 to section VI.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If emphasizing ketone functional group over heterocyclic structure
Chapter notes prioritize oxygen-function classification in some cases over ring structure.
If imported as amino-acid functional derivative
Amino-function compounds may take precedence per classification note 3(A).
If antisera or blood fractions containing the compound
Immunological products are excluded from Chapter 29 per chapter note 2(e).
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Import Tips & Compliance
• Submit FDA Drug Establishment Registration and provide API source verification documents
• Ensure packaging prevents moisture absorption critical for nitroimidazole stability
• Conduct pre-shipment purity testing to meet 99%+ specification requirements
Related Products under HTS 2933.29.35.00
Metronidazole USP
Metronidazole is a nitroimidazole derivative used as an antibiotic and antiprotozoal agent for treating infections like bacterial vaginosis and trichomoniasis. It features an unfused imidazole ring in its aromatic structure, classifying it under HTS 2933.29.35.00 as a nitrogen-heterocyclic compound described in additional U.S. note 3 to section VI.
Tinidazole Powder
Tinidazole is a synthetic antiprotozoal and antibacterial agent with a nitroimidazole ring structure, used for treating amebiasis and giardiasis. As an aromatic heterocyclic compound with nitrogen hetero-atoms only, it falls under HTS 2933.29.35.00 per additional U.S. note 3.
Dimetridazole Technical Grade
Dimetridazole is a 5-nitroimidazole compound used in veterinary medicine for treating histomoniasis in poultry. Its unfused imidazole ring structure qualifies it as an aromatic heterocyclic under HTS 2933.29.35.00 as specified in additional U.S. note 3.
Niridazole Crystals
Niridazole is a nitrothiazole-imidazole hybrid used as an antischistosomal agent, featuring the required unfused imidazole ring. As a chemically defined aromatic heterocyclic compound, it falls under HTS 2933.29.35.00 described in additional U.S. note 3.
Clofazimine Micronized Powder
Clofazimine is a riminophenazine with imidazole-like nitrogen heterocycle used for leprosy and mycobacterium avium treatment. Its aromatic structure qualifies under HTS 2933.29.35.00 per the specific U.S. note provisions.
Imidazole-4-Carboxylic Acid
Imidazole-4-carboxylic acid is a key intermediate for pharmaceutical synthesis, featuring the unfused imidazole ring required by heading 2933. As an aromatic heterocyclic compound listed in additional U.S. note 3, it imports under HTS 2933.29.35.00.