U.S. Customs and Border Protection · CROSS Database · 5 HTS codes referenced
Primary HTS Code
2922.49.4050
$36.1M monthly imports
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Ruling Age
34 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-05 · Updates monthly
The tariff classification of five amino acids from Japan.
NY 867833 October 31, 1991 CLA-2-29:S:N:N1:239 867833 CATEGORY: Classification TARIFF NO.: 2922.49.4050; 2930.40.0000; 2933.29.5000; 2933.90.3900; 2933.90.5000 Mr. Marvin Trief Arrow Chemical Inc. P.O. Box 580 Westwood, NJ 07675 RE: The tariff classification of five amino acids from Japan. Dear Mr. Trief: In your letter dated October 7, 1991, you requested a tariff classification ruling. The applicable Harmonized Tariff Schedule (HTS) subheadings and rates of duty for these products will be as follows: CHEMICAL PRODUCT HTS DUTY L-tryptophan (CAS# 73-22-3) 2933.90.3900 3.7 cents per kg plus 16.2 percent ad valorem L-valine (CAS# 72-18-4) 2922.49.4050 4.2 percent ad valorem L-histidine (CAS# 71-00-1) 2933.29.5000 7.9 percent ad valorem L-proline (CAS# 147-85-3) 2933.90.5000 7.9 percent ad valorem L-methionine (CAS# 63-68-3) 2930.40.0000 4.2 percent ad valorem L- methionine may be subject to additional dumping duties. For information concerning this matter contact the Department of Commerce, Deputy Assistant Secretary for Compliance, Import Administration, Washington D.C., telephone (202) 377-3601. 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