2935.90.42.00/Sulfapyridine Base API/Japan

Sulfapyridine Base API from Japan

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.

Duty Rate — Japan → United States

0%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Maintain cold chain documentation if shipped as hygroscopic base form to prevent degradation during transit

• Include synthetic route information and residual solvent analysis per ICH guidelines for API validation