U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2937.23.5050
$7.0M monthly imports
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Ruling Age
18 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-05-04 · Updates monthly
The tariff classification of Cyproterone Acetate (427-51-0) in bulk form, from Italy
N026102 April 21, 2008 CLA-2-29:OT:RR:NC:N2:238 CATEGORY: Classification TARIFF NO.: 2937.23.5050 Ms. Inge Forstenzer Ren-Pharm International Ltd. 350 Jericho Turnpike, Suite 204 Jericho, NY 11753 RE: The tariff classification of Cyproterone Acetate (427-51-0) in bulk form, from Italy Dear Ms. Forstenzer: In your letter dated April 8, 2008, you requested a tariff classification ruling. The subject product, Cyproterone Acetate is an anti-androgen, it acts by blocking androgen receptors. It is used for the treatment of hirsutism, and in hormone therapy for male-to-female transgendered persons. The applicable subheading for the Cyproterone Acetate in bulk form will be 2937.23.5050 Harmonized Tariff Schedule of the United States (HTSUS), which provides for "Steroidal hormones, their derivatives and structural analogues: Estrogens and progestins: Other: Other: Other: Other." The rate of duty will be free. Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/. This merchandise may be subject to the Federal Food, Drug, and Cosmetic Act and/or The Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (The Bioterrorism Act), which are administered by the U.S. Food and Drug Administration (FDA). Information on the Federal Food, Drug, and Cosmetic Act, as well as The Bioterrorism Act, can be obtained by calling the FDA at 1-888-463-6332, or by visiting their website at www.fda.gov. 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 Harvey Kuperstein at 646-733-3033. Sincerely, Robert B. Swierupski Director, National Commodity Specialist Division