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NY H88174

March 6, 2002

CLA-2-29:RR:NC:2:239 H88174


TARIFF NO.: 2934.99.9000

Mr. Jack D. Mlawski
Galvin & Mlawski
470 Park Avenue South
Suite 200 – South Tower
New York, NY 10016-6819

RE: The tariff classification of (4S,6S)-5,6-Dihydro-4-Hydroxy-6-Methylthieno[2,3-B] Thiopyran-7,7-Dioxide (CAS 147086-81-5) from the United Kingdom.

Dear Mr. Mlawski:

In your letter dated January 30, 2002, on behalf of your client Merck & Co., Inc., you requested a tariff classification ruling for (4S,6S)-5,6-Dihydro-4-Hydroxy-6- Methylthieno [2,3-B]Thiopyran-7,7-Dioxide which you have stated is a pharmaceutical intermediate used in the production of dorzolimide, an ophthalmic drug.

The applicable subheading will be 2934.99.9000, Harmonized Tariff Schedule of the United States (HTS), which provides for other heterocyclic compounds. Pursuant to General Note 13 to the Harmonized Tariff Schedule this product is free of duty.

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 Andrew Stone at 212-733-3032.


Robert B. Swierupski, Director
National Commodity Specialist Division

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