2933.59.53.00/Aminophylline USP Powder/Japan

Aminophylline USP Powder from Japan

Aminophylline is a heterocyclic compound containing a xanthine (purine) structure with pyrimidine rings, used as a bronchodilator drug for asthma treatment. It falls under HTS 2933.59.53.00 as an aromatic drug with pyrimidine hetero-atoms in its structure. This classification applies to its chemically defined organic nature per Chapter 29 notes.

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

• Obtain FDA Drug Master File and ensure compliance with 21 CFR import regulations for bulk APIs

• Provide Certificate of Analysis (CoA) verifying purity and aromatic structure; avoid misclassification as non-drug