2933.99.97.01/Acyclovir Active Ingredient/Japan

Acyclovir Active Ingredient from Japan

Acyclovir (9-(2-hydroxyethoxymethyl)guanine), synthetic guanine analog with nitrogen heterocyclic purine structure for antiviral medication. Pure API form under HTS 2933.99.9701.

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

• DMF Type II required; ANDA reference standards

• Polymorph Form I certificate; different forms affect bioavailability claims

• Controlled substance precursor monitoring