Lamivudine from China
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 — China → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• WHO prequalified supplier documentation; chiral purity verification (>99.5% S-enantiomer); avoid generic name confusion with chemical synonyms