Base
8739061992-04-30New YorkClassification

The tariff classification of L-cystine (CAS# 56-89-3) fromJapan.

U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced

Cross-Source Intelligence

Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-01 · Updates monthly

Summary

The tariff classification of L-cystine (CAS# 56-89-3) fromJapan.

Ruling Text

NY 873906 April 30, 1992 CLA-2-29:S:N:N1:239 873906 CATEGORY: Classification TARIFF NO.: 2930.90.4550 Mr. Edmund J. Corboy Austin Chemical Company, Inc. 9655 West Bryn Mawr Avenue Rosemont, IL 60018-5299 RE: The tariff classification of L-cystine (CAS# 56-89-3) from Japan. Dear Mr. Corboy: In your letter dated April 15, 1992, you requested a tariff classification ruling. The applicable subheading for L-cystine will be 2930.90.4550, Harmonized Tariff Schedule of the United States (HTS), which provides for other organo-sulfur compounds: other acids. The rate of duty will be 4.2 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 been filed without a copy, this ruling should be brought to the attention of the Customs officer handling the transaction. Sincerely, Jean F. Maguire Area Director New York Seaport