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2933.59.53.00/Theophylline Anhydrous API/Japan

Theophylline Anhydrous API from Japan

Theophylline is a methylxanthine drug with fused pyrimidine-imidazole rings, used for respiratory disorders. Classified in HTS 2933.59.53.00 due to its aromatic pyrimidine structure and status as a pharmaceutical drug. Meets Chapter 29 criteria for separate chemically defined compounds.

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

• Register with FDA as bulk drug substance; include pharmacopeial grade certification

• Verify no solvents beyond transport allowances per Chapter 29 note (e)

Theophylline Anhydrous API from Japan — Import Duty Rate | HTS 2933.59.53.00