Sulfamethoxazole USP
Sulfamethoxazole is a synthetic bacteriostatic sulfonamide antibiotic used primarily in combination with trimethoprim for treating urinary tract infections and respiratory infections. It falls under HTS 2935.90.75.00 as a sulfonamide compound described in additional U.S. note 3 to section VI, which covers specific organic compounds in this category. This pure chemical form is imported for pharmaceutical manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically listed in additional U.S. note 3
Other sulfonamides not covered by note 3 fall under the general 'other' subheading within 2935.90
If imported as formulated tablets or mixtures
Finished pharmaceutical products containing sulfonamides are classified in Chapter 30 as medicaments rather than bulk chemicals
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Import Tips & Compliance
• Verify USP grade certification and provide detailed chemical analysis for customs; ensure compliance with FDA import requirements for active pharmaceutical ingredients; avoid misclassification by confirming it's not a finished dosage form
Related Products under HTS 2935.90.75.00
Sulfadiazine Sodium
Sulfadiazine sodium is the sodium salt of a sulfonamide antibiotic used to treat toxoplasmosis and certain bacterial infections, often in veterinary and human medicine. Classified under HTS 2935.90.75.00 per additional U.S. note 3 to section VI for specific sulfonamides. It's imported as a bulk active ingredient for compounding.
Sulfisoxazole
Sulfisoxazole is a short-acting sulfonamide antibiotic effective against urinary tract infections and chlamydia, available as a bulk powder for pharmaceutical formulation. It qualifies for HTS 2935.90.75.00 as a product listed in additional U.S. note 3 to section VI. This chemical is a separate, chemically defined organic sulfonamide compound.
Sulfapyridine
Sulfapyridine is a sulfonamide used historically for dermatitis herpetiformis and as an intermediate in sulfasalazine synthesis. It is covered under HTS 2935.90.75.00 due to its inclusion in additional U.S. note 3 to section VI for specific sulfonamides. Imported as a pure organic compound for medicinal applications.
Sulfathiazole
Sulfathiazole is a sulfonamide bacteriostatic agent used in topical ointments and veterinary medicine. This product is described in additional U.S. note 3 to section VI, placing it in HTS 2935.90.75.00 as a specific sulfonamide. It's supplied as a fine chemical powder for further processing.
Sulfanilamide
Sulfanilamide is the foundational sulfonamide antibiotic, used in vaginal creams and as a diagnostic agent. Classified in HTS 2935.90.75.00 per additional U.S. note 3 to section VI for listed sulfonamides. This simple organic compound is imported for pharmaceutical and research purposes.
Sulfacetamide Sodium
Sulfacetamide sodium is a sulfonamide used in ophthalmic solutions for bacterial conjunctivitis. It falls under HTS 2935.90.75.00 as specified in additional U.S. note 3 to section VI. Imported as a sterile bulk salt for eye drop formulation.