U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2933.39.4700
$116.8M monthly imports
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Ruling Age
34 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-01 · Updates monthly
The tariff classification of isonicotinic acid from Japan.
NY 865863 AUG 15 1991 CLA-2-29:S:N:N1:239 865863 CATEGORY: Classification TARIFF NO.: 2933.39.4700 Mr. Edmund J. Corboy Austin Chemical Company, Inc. 9655 West Bryn Mawr Avenue Rosemont, IL 60018-5299 RE: The tariff classification of isonicotinic acid from Japan. Dear Mr. Corboy: In your letter dated August 1, 1991, you requested a tariff classification ruling. The applicable subheading for isonicotinic acid (CAS# 55-22- 1) will be 2933.39.4700, Harmonized Tariff Schedule of the United States (HTS), which provides for other heterocyclic compounds containing an unfused pyridine ring in the structure: products described in additional U.S. note 3 to section VI. The rate of duty 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 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