Acyclovir Active Ingredient from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• DMF Type II required; ANDA reference standards
• Polymorph Form I certificate; different forms affect bioavailability claims
• Controlled substance precursor monitoring