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NY 802087

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October 21, 1994

CLA-2-29:S:N:N7:239 802087

CATEGORY: CLASSIFICATION

TARIFF NO.: 2933.79.5000

Mr. Jason Bertola
Aceto Corporation
One Hollow Lane
Lake Success, NY 11042-1215

RE: The tariff classification of TNTU and TSTU from Japan.

Dear Mr. Bertola:

In your letter dated September 8, 1994 you requested a tariff classification ruling for TNTU (CAS Registry Name - N-[(dimethylamino)[(1,3,3a,4,7,7a-hexahydro-1,3-dioxo-4,7-methano-2H-isoindol-2-yl)oxy]methylene-N-methyl-methanaminium tetrafluoroborate(1-) CAS 125700-73-4, which is a peptide coupling reagent, and TSTU (CAS Registry Name - N-[dimethylamino)[(2,5-dioxo-1-pyrrolidinyl)oxy]methylene]-N-methyl-methanamium tetrafluoroborate(1-) CAS 105832-38-0, which is aslo a coupling reagent.

The applicable subheading for both products will be 2933.79.5000, Harmonized Tariff Schedule of the United States (HTS), which provides for heterocyclic compounds with nitrogen hetero-atom(s) only: nucleic acids and their salts: other lactams. The rate of duty will be 7.9 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

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