Sulfamethoxazole USP
Sulfamethoxazole is a synthetic bacteriostatic sulfonamide antibiotic used primarily in combination with trimethoprim for treating urinary tract infections and other bacterial infections. It falls under HTS 2935.90.60.00 as a sulfonamide classified as a pharmaceutical drug, specifically within the 'other drugs' category of sulfonamides. This chemically defined organic compound contains the characteristic sulfonamide functional group.
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 pyridine ring as primary structure
Sulfonamides with pyridine moiety may classify under pyridine/salt derivatives rather than general sulfonamides per chapter classification rules.
If imported as an antibiotic in dosage form
Finished dosage forms containing sulfonamide antibiotics fall under Chapter 29 heading 2941 for antibiotics, taking precedence over general sulfonamide classification.
If imported as finished tablets or capsules
Pharmaceutical products put up in dosage forms for retail sale classify in Chapter 30, superseding Chapter 29 chemical classification.
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 FDA Drug Master File (DMF) and Certificate of Analysis (CoA) confirming USP purity standards during customs clearance
• Ensure proper pharmaceutical labeling and include stability data to avoid reclassification as a non-drug chemical
• Verify DEA scheduling status as it's not controlled but confirm with CBP for any combination product restrictions
Related Products under HTS 2935.90.60.00
Sulfadiazine Sodium
Sulfadiazine sodium is the water-soluble salt form of sulfadiazine, a sulfonamide antibiotic used to treat toxoplasmosis, rheumatic fever, and as part of combination therapy for certain infections. Classified under HTS 2935.90.60.00 as a sulfonamide drug per Chapter 29 note (C)(1) for inorganic salts of organic compounds. The sodium salt retains the sulfonamide classification of the parent compound.
Sulfisoxazole
Sulfisoxazole is a short-acting sulfonamide antibiotic effective against a wide range of gram-positive and gram-negative bacteria, commonly used in pediatric ear infections and urinary tract infections. It qualifies for HTS 2935.90.60.00 as a sulfonamide drug meeting Chapter 29 criteria for separate chemically defined organic compounds used pharmaceutically. The molecule features the classic p-aminobenzenesulfonamide structure.
Sulfapyridine
Sulfapyridine, one of the earliest synthetic sulfonamides, is used in dermatological treatments particularly for dermatitis herpetiformis and as a component in dapsone alternatives. HTS 2935.90.60.00 applies as a classic sulfonamide drug structure with pharmaceutical applications. It exemplifies the chemically defined organic compounds covered by Chapter 29 heading 2935.
Sulfathiazole Sodium
Sulfathiazole sodium is a sulfonamide salt used topically and systemically for bacterial infections, particularly in veterinary medicine and historical human antibiotic therapy. The sodium salt form classifies under HTS 2935.90.60.00 following Chapter 29 note (C)(1) for salts of organic pharmaceutical compounds. It maintains the essential sulfonamide therapeutic moiety.
Sulfanilamide
Sulfanilamide is the parent compound of the sulfonamide class of antibiotics, historically significant as the first synthetic antibacterial drug. It classifies under HTS 2935.90.60.00 as a chemically defined sulfonamide with established pharmaceutical applications. The simple p-aminobenzenesulfonamide structure defines the entire sulfonamide therapeutic class.
Sulfacetamide Sodium
Sulfacetamide sodium is a sulfonamide used primarily in ophthalmic solutions for bacterial conjunctivitis and acne treatments. HTS 2935.90.60.00 covers this pharmaceutical salt as a sulfonamide drug per Chapter 29 classification rules for organic salts. Its high water solubility enables topical ophthalmic delivery.