Dapsone USP from Canada
Dapsone is an organo-sulfur antibacterial drug used for leprosy and dermatitis herpetiformis treatment. Its diphenylsulfone structure features sulfur directly linked to aromatic carbons, characteristic of heading 2930 organo-sulfur compounds. Designated as a drug in subheading 2930.90.92.35.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide WHO prequalification if applicable and methemoglobinemia risk disclosures for FDA review
• Label clearly as human pharmaceutical to prevent veterinary reclassification
• Avoid bulk packaging over 25kg without special stability permits