Lamivudine from Japan
Lamivudine is a cytidine nucleoside reverse transcriptase inhibitor used in HIV and hepatitis B treatment, featuring pyrimidine heterocyclic base. This nucleic acid derivative drug is classified under HTS 2934.99.4700 for other heterocyclic drugs. Chemically defined structure meets Chapter 29 pure compound requirements.
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
• WHO prequalified supplier documentation; chiral purity verification (>99.5% S-enantiomer); avoid generic name confusion with chemical synonyms