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Pharmaceutical Grade Acetylsulfisoxazole API from China

High-purity acetylsulfisoxazole active pharmaceutical ingredient (API) specifically enumerated in HTS 2935.90.32.00 as a sulfonamide anti-infective drug. Used exclusively in manufacturing prescription medications for systemic bacterial infections.

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

Register as API importer with FDA and maintain DMF confidentiality

Batch testing required; provide chromatograms showing single impurity <0.1%

Declare specifically by name to avoid general sulfonamide classification