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2933.53.00.00/Butalbital Pharmaceutical Grade/Japan

Butalbital Pharmaceutical Grade from Japan

Butalbital, a short to intermediate-acting barbiturate for tension headaches, features the pyrimidine ring listed under HTS 2933.53.00.00. Bulk imported for combination with acetaminophen/caffeine in Fioricet formulations. Pure chemical compound without excipients.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Combination drug manufacturers need separate API and excipient duty calculations

• Include polymorphic form specification (Form I vs II) in COA to prevent grade disputes