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Data: HTSUS Rev.21 · 2026-10-18.12PrivacyAI-generated suggestion based on HTSUS text, not legal advice. Final classification rests with CBP rulings or licensed advice; the importer of record is responsible for the entry.

Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals

2933.99.70.00Tariff line

Classification path

Heterocyclic compounds with nitrogen hetero-atom(s) only
2933
Other
Other
Aromatic or modified aromatic
Other
Drugs
Drugs primarily affecting the central nervous system
Other
2933.99.70.00

Rates of duty

General rate (Column 1)6.5%
SpecialFree (A+, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 215.4¢/kg + 58.5%
Unitkg

Free (A+, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)

Printed page 1561

Measure flags

for origin CN, entry date 2026-10-26 · base rate 6.5%

  • Section 301 forced-labor tariff (12.5%)9903.05.31Conditional+12.5%China: Column 1 rate + 12.5% additional
  • China 301: not on any listN/A—8-digit subheading 2933.99.70 is not on Lists 1–4B or the four-year-review lists
  • 232 patented pharmaceuticals9903.04.60Conditionalcapped at 100%General (all other countries) | Pharmaceutical articles (chapter 29): patented finished drugs / APIs / key starting materials; patented or generic status is determined by the article, not by t
  • PGAFDA FD2 · requiredDEA DE1

Confirmed total 6.5% · max 100%Full duty breakdown →

U.S. → China →