U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2924.29.4400
$50.2M monthly imports
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Ruling Age
35 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-01 · Updates monthly
The tariff classification of Boc-L-Tyrosine Methyl Ester, CAS# 4326-36-7 from Japan
NY 856826 OCT 30 1990 CLA-2-29:S:N:N1:240 856826 CATEGORY: Classification TARIFF NO.: 2924.29.4400 Mr. Edmund J. Corboy Austin Chemical Company, Inc. 9655 West Bryn Mawr Avenue Rosemont, Illinois 60018-5299 RE: The tariff classification of Boc-L-Tyrosine Methyl Ester, CAS# 4326-36-7 from Japan Dear Mr. Corboy: In your letter dated September 26, 1990, you requested a tariff classification ruling. The applicable HTS subheading for Boc-L-Tyrosine Methyl Ester, CAS # 4326-36-7. also known as N-[(1,1-Dimethylethoxy) carbonyl]-L-tyrosine methyl ester, will be 2924.29.4400, Harmonized Tariff Schedule of the United States (HTS), which provides for cyclic amides (including carbamates) and their derivatives; salts thereof: other: aromatic: other:: products described in additional U.S. note 3 to section VI. The duty rate will be 13.5 percent ad valorem. This ruling is being issued under the provisions of Section 177 of the Customs Regulations (19 C.F.R. 177). A copy of this ruling letter should be attached to the entry documents filed at the time this merchandise is imported. If the documents have already been filed, this ruling should be brought to the attention of the Customs officer handling the transaction. Sincerely, Jean F. Maguire Area Director New York Seaport