Imidazole-4-Carboxylic Acid
Imidazole-4-carboxylic acid is a key intermediate containing the unfused imidazole ring used in synthesis of pharmaceuticals and agrochemicals. Classified under HTS 2933.29.90.00 as other compounds with unfused imidazole ring structure and nitrogen hetero-atoms only.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If contains organo-metallic impurities affecting classification
Organo-inorganic compounds with metals linked to carbon classify in heading 2931.
If primarily classified by carboxylic acid function over heterocycle
Some heterocyclic carboxylic acids may classify by oxygen function per heading 2916.
If specifically enumerated in statistical suffix rather than 'other'
More specific statistical reporting numbers exist for common imidazole derivatives.
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Import Tips & Compliance
• Provide structure confirmation via HPLC or mass spectrometry to verify unfused imidazole classification
• Include Safety Data Sheet (SDS) detailing handling precautions for corrosive organic acids
Related Products under HTS 2933.29.90.00
Metronidazole USP
Metronidazole is a synthetic nitroimidazole derivative used primarily as an antibiotic for treating anaerobic bacterial and protozoal infections. It contains an unfused imidazole ring in its structure, qualifying it under HTS 2933.29.90.00 as a heterocyclic compound with nitrogen hetero-atoms only, specifically other unfused imidazole ring compounds.
Cimetidine Base
Cimetidine is an imidazole-containing histamine H2-receptor antagonist used to treat peptic ulcers and GERD. As a bulk pharmaceutical chemical with unfused imidazole ring, it falls under HTS 2933.29.90.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
4-Nitroimidazole
4-Nitroimidazole serves as a synthetic intermediate for nitroimidazole antibiotics like metronidazole. Its unfused imidazole ring with nitro substitution places it under HTS 2933.29.90.00 as other nitrogen-heterocyclic compounds.
Histamine Dihydrochloride
Histamine dihydrochloride, containing imidazole ring, used in pharmaceutical standards and research. Falls under HTS 2933.29.90.00 as a chemically defined compound with unfused imidazole ring and nitrogen hetero-atoms.
2-Methylimidazole
2-Methylimidazole is an alkyl-substituted imidazole used as curing agent in epoxy resins and pharmaceutical intermediate. Classified under HTS 2933.29.90.00 for unfused imidazole ring compounds.
Clotrimazole USP
Clotrimazole is an imidazole antifungal agent containing unfused imidazole ring in its structure. Bulk API form classifies under HTS 2933.29.90.00 as other heterocyclic nitrogen compounds.