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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing a sugar moiety or classified as a nucleoside analog
Antibiotics with specific carbohydrate structures are directed to heading 2941 per chapter notes.
If not specifically listed in additional U.S. note 3 to section VI
Non-aromatic or unmodified aromatic imidazoles fall into the general 'other' subcategory.
If imported as finished tablets or capsules for retail sale
Medicaments in dosage form are classified in Chapter 30 based on therapeutic use, not chemical structure.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide Certificate of Analysis (CoA) and pharmacopeial compliance documentation to verify USP grade and purity standards
• Ensure DMF (Drug Master File) registration with FDA if intended for pharmaceutical manufacturing
• Avoid misclassification as finished dosage forms which fall under Chapter 30
Related Products under HTS 2933.29.35.00
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.
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.
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.