Vidarabine (Adenine Arabinoside) from Canada
Vidarabine is an adenine arabinoside antiviral drug with guanosine-like structure effective against herpes viruses. As a chemically defined aromatic heterocyclic pharmaceutical, it classifies under HTS 2934.99.30.00 as a drug.
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
• Provide enzymatic purity testing against adenosine deaminase contamination
• Document ophthalmic grade specifications for corneal application
• Include natural/semi-synthetic origin certification from fermentation process