Sulfasalazine USP Powder
Sulfasalazine is a sulfonamide antibiotic chemically known as salicylazosulfapyridine, used primarily for treating ulcerative colitis and rheumatoid arthritis. This USP-grade powder form falls under HTS 2935.90.4200 as it is specifically listed as an anti-infective agent within the sulfonamides category of Chapter 29. It is supplied as a bulk pharmaceutical intermediate for compounding into tablets or suspensions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as veterinary grade rather than human pharmaceutical
Veterinary sulfonamides fall under separate statistical suffix; human drug specification determines 2935.90.4200 classification
If pre-formulated into finished dosage forms like tablets
Finished pharmaceutical products containing sulfasalazine move to Chapter 30 as medicaments rather than bulk chemicals
If supplied as mixture with excipients exceeding 20% by weight
Chemical mixtures with significant non-active additives classified as 'other chemical preparations' in 3824
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Import Tips & Compliance
• Obtain FDA Drug Master File (DMF) and ensure Certificate of Analysis confirms USP purity standards for pharmaceutical-grade imports
• Provide detailed stability data and impurity profiles as required for anti-infective sulfonamides under FDA import alerts
• Avoid common pitfalls by verifying the product meets 'drugs' classification rather than veterinary use which may shift to different HTS
Related Products under HTS 2935.90.42.00
Sulfamerazine EP Standard
Sulfamerazine, a short-acting sulfonamide antibiotic explicitly listed in HTS 2935.90.4200, meets European Pharmacopoeia standards for purity. Used in combination therapies for urinary tract infections, this bulk API represents a classic Chapter 29 sulfonamide classification. The product qualifies due to its specific chemical definition and anti-infective drug application.
Pharmaceutical Sulfamerazine Granules
Sulfamerazine granules represent the enumerated sulfonamide in micronized form for improved bioavailability, classified under HTS 2935.90.4200. These pharmaceutical granules maintain chemical identity as separate organic compounds per Chapter 29 note 2(a). Used in compounding oral suspensions for pediatric infections.
Sulfadiazine Sodium Bulk API
Sulfadiazine sodium is a water-soluble salt form of the sulfonamide antibiotic sulfadiazine, listed specifically under HTS 2935.90.4200. Used in toxoplasmosis treatment and burn wound prophylaxis, this bulk active pharmaceutical ingredient (API) qualifies as a Chapter 29 sulfonamide drug. The sodium salt classification follows Chapter Note 5(C)(1) placing it with the parent organic compound.
Sulfaguanidine Pharmaceutical Grade
Sulfaguanidine is a sulfonamide specifically enumerated in HTS 2935.90.4200, historically used for gastrointestinal bacterial infections. This pharmaceutical-grade powder meets Chapter 29 requirements for separate chemically defined organic compounds used as anti-infective drugs. Primarily imported as bulk API for veterinary and niche human applications.
Sulfapyridine Base API
Sulfapyridine is a foundational sulfonamide antibiotic specifically named in HTS 2935.90.4200, used in dermatological treatments and as a component of dapsone metabolism studies. This base form (non-salt) bulk API perfectly matches Chapter 29 criteria for separate chemically defined anti-infective drugs. Imported primarily for pharmaceutical manufacturing and research.
Sulfadiazine Silver Pharmaceutical
Silver sulfadiazine, while typically considered a coordination compound, derives classification from its parent sulfonamide sulfadiazine per Chapter 29 note 5(C)(3). Specifically enumerated under HTS 2935.90.4200 through its sulfadiazine component, used exclusively for burn wound cream formulations. Bulk powder imported for compounding into topical antimicrobial creams.