6 newer rulings cite the same tariff codes.
Classification can shift over time. Review the more recent rulings below before relying on this one.
The tariff classification of FDKP, imported in bulk form, from Switzerland
Issued April 22, 2008 by U.S. Customs and Border Protection.
Cite this ruling
Copies to clipboardN0 N025217 (April 22, 2008)
Tariff classification
HTS codes: 2933.59.9500
Headings: 2933
Product description
FDKP is a mixture of isomers [R,R], [S,S], and [R,S] of the chemical compound 3,6-Bis(N-fumaryl-4-aminobutyl)-2,5-diketopiperazine, also known as 2-Butenoic acid, 4,4’-[(3,6-dioxo-2,5-piperazinediyl)bis(4,1-butanediylimino)]bis[4-oxo-, (2E,2’E)-. The CAS number for the isomeric mixture is 294659-59-9. The CAS number for the [S,S] isomer is 176738-91-3. Presently, no CAS numbers exist for the [R,R] and [S,R] isomers. The product, a pharmaceutical intermediate, is a component in the manufacture of Technosphere Insulin®, a drug used in the treatment of diabetes. Based on the chemical structure, the product is a nonaromatic heterocyclic compound with nitrogen hetero-atom(s) containing a piperazine ring.
CBP rationale
The applicable subheading will be 2933.59.9500, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Heterocyclic compounds with nitrogen hetero-atoms(s) only: Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other: Other: Other: Other.
Full text
N025217 April 22, 2008 CLA-2-29:OT:RR:E:NC:2:239 CATEGORY: Classification TARIFF NO.: 2933.59.9500 Ms. Lynn Kelleher MannKind Corporation 61 South Paramus Road Paramus, New Jersey 07652 RE: The tariff classification of FDKP, imported in bulk form, from Switzerland Dear Ms. Kelleher: In your letter dated March 25, 2008, you requested a tariff classification ruling for FDKP. FDKP is a mixture of isomers [R,R], [S,S], and [R,S] of the chemical compound 3,6-Bis(N-fumaryl-4-aminobutyl)-2,5-diketopiperazine, also known as 2-Butenoic acid, 4,4’-[(3,6-dioxo-2,5-piperazinediyl)bis(4,1-butanediylimino)]bis[4-oxo-, (2E,2’E)-. The CAS number for the isomeric mixture is 294659-59-9. The CAS number for the [S,S] isomer is 176738-91-3. Presently, no CAS numbers exist for the [R,R] and [S,R] isomers. The product, a pharmaceutical intermediate, is a component in the manufacture of Technosphere Insulin®, a drug used in the treatment of diabetes. Based on the chemical structure, the product is a nonaromatic heterocyclic compound with nitrogen hetero-atom(s) containing a piperazine ring. The applicable subheading will be 2933.59.9500, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Heterocyclic compounds with nitrogen hetero-atoms(s) only: Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: Other: Other: Other: Other. The rate of duty will be 6.5 percent ad valorem. 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 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 Richard Dunkel at 646-733-3032. Sincerely, Robert B. Swierupski Director, National Commodity Specialist Division
More rulings on the same tariff codes
The tariff classification of Various Chemical Compounds from China and Switzerland
The tariff classification of Adefovir Dipivoxil (CAS-142340-99-6) in bulk form, from India
The tariff classification of (S)-Piperazine-2-carboxylic acid dihydrochloride, CAS No. 158663-69-5, from Belgium
The tariff classification of 1-Hydroxyethylethoxypiperazine (CAS 13349-82-1) from India
The tariff classification of Ethyl 3,3-bis(trifluoromethyl)acrylate, CAS No. 1513-60-6, 5-Amino-3-(4-methoxyphenyl)pyrazole, CAS No. 19541-95-8, and N-Acetylhomopiperazine, CAS No. 61903-11-5 from India, China and Japan
The tariff classification of 2-(6-Aminopurin-9-yl) ethanol 98% (CAS 707-99-3) from China
The tariff classification of (R)-Piperazine-2-carboxylic acid dihydrochloride CAS No. 126330-90-3, imported in bulk form, from China
The tariff classification of Methyl 2,2-Dimethyl-3-(Piperazin-1-YL) Propanoate Dihydrochloride from England
The tariff classification of 1,4-Diazabicyclo[2,2,2]Octane (CAS 280-57-9) from China
The tariff classification of N-(2-Pyrimidinyl)-piperazine (CAS 20980-22-7), imported in bulk form, from China
Follow N025217
Get an email if this ruling is revoked or modified, or a newer ruling supersedes it.
One email per day at most. Confirm your address once, unsubscribe anytime.
Searching CBP rulings the smart way
Rulings are precedent. See which ones apply to your product: TariffLens semantically searches all 200,000+ CBP rulings and builds defensible classifications backed by ruling citations.