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Sulfanilamide Powder USP from China

Sulfanilamide, the parent compound of all sulfonamides, provides broad-spectrum antibacterial activity. HTS 2935.90.4800 classification as prototypical sulfonamide anti-infective per Chapter 29(a). Still used topically in vaginal infections and experimentally.

Duty Rate — China → United States

19%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

USP monograph compliance mandatory; aniline impurities strictly controlled

Topical vs systemic documentation prevents dosage form confusion

Historical FDA approvals support continued import legitimacy