Sulfadiazine Technical Grade from Canada
Sulfadiazine contains a pyrimidine ring (as part of diazine) with nitrogen hetero-atoms only, used as sulfonamide antibiotic API. Falls under HTS 2933.59.95.00 for other pyrimidine compounds per Chapter 29 chemical definitions. Excludes sulfonated derivatives per notes.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Confirm no sulfonation on ring carbon to stay in 2933; CoA essential
• Veterinary grades need separate DMF