Acyclovir from Japan
Acyclovir is a guanosine nucleoside analog with a purine heterocyclic base, used as antiviral drug against herpes viruses. This acyclic nucleic acid derivative qualifies under HTS 2934.99.4700 as a pharmaceutical drug heterocyclic compound. Its specific antiviral therapeutic use defines classification.
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%
Import Tips
• GMP certification mandatory for API; stability studies for 12-month shelf life; differentiate from veterinary formulations under 2934.99.90