U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2933.49.6000
$9.7M monthly imports
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Ruling Age
23 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-28 · Updates monthly
The tariff classification of (S)-1,2,3,4-Tetrahydroisoquinoline-3-Carboxylic Acid, T-Butyl Ester from Korea.
NY I86302 October 11, 2002 CLA-2-29:RR:NC:2:239 I86302 CATEGORY: Classification TARIFF NO.: 2933.49.6000 Ms. Laura Mannisto Interchem Corporation 120 Route 17 North P.O. Box 07653-1579 RE: The tariff classification of (S)-1,2,3,4-Tetrahydroisoquinoline-3-Carboxylic Acid, T-Butyl Ester from Korea. Dear Ms. Mannisto: In your letter dated September 10, 2002, you requested a tariff classification ruling for (S)-1,2,3,4-Tetrahydroisoquinoline-3-Carboxylic Acid, T-Butyl Ester which you have stated will be used as a chemical intermediate. The applicable subheading will be 2933.49.6000, Harmonized Tariff Schedule of the United States (HTS), which provides for heterocyclic compounds with nitrogen hetero-atom(s) only: compounds containing a quinoline or isoquinoline ring-system (whether or not hydrogenated); not further fused: other. The rate of duty will be 7.9 percent ad valorem. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist Andrew Stone at 646-733-3032. Sincerely, Robert B. Swierupski, Director National Commodity Specialist Division