Aromatic or modified aromatic: — Other: — Other: — Products described in additional U.S. note 3 to section VI
Part of: 293499 — Other: — Other:
N351608 · 2025-08-08 — The tariff classification of RVU305 in bulk form, from China
RVU305 is an MTA-cooperative PRMT5 inhibitor that selectively impedes the growth of cancer cells with MTAP deletions, while sparing normal cells. The RVU305 will be undergoing drug development in the pre-IND stage for use in Phase 1 clinical studies. In your letter, you indicated the RVU305 will be imported in bulk form and formulated into dosage form tablets for first-in-human, Phase I clinical studies on solid tumors. The applicable subheading for the RVU305 in bulk form will be 2934.99.3900, Harmonized Tariff Schedule of the United States (HTSUS), which provides for “Nucleic acids and…
N304771 · 2019-06-27 — The tariff classification of three organic photoinitiator chemicals from China
We assume for purposes of this ruling that all of the products under consideration are imported in pure form, meeting the terms of HTSUS Chapter 29 Note 1. You provided the following information on the chemical products under review: Item 1 The first chemical is Ethyl phenyl(2,4,6-trimethybonzoyl)phosphinate. Also known as TPO-L, this chemical is a liquid photoinitiator for pigmented UV-curable coatings and printing inks. The CAS number for the chemical is 84434-11-7. The molecular formula for TPO-L is C18H21O3P. RadTech indicates in its letter, that it believes this chemical is likely…
N297699 · 2018-11-29 — The tariff classification of Tropoelastin (60kDa) from Australia
Documentation received with your request was sent to our CBP Laboratory for review. That review is now complete and our determination of classification is as follows. You indicated that the instant product is called Tropoelastin. It is a 60kDa extracellular matrix protein and is the soluble precursor to elastin. Elastin is a key mammalian extracellular matrix protein that is critical to the elasticity, compliance and resilience of a range of tissues including the vasculature, skin and lung. In addition to providing mechanical integrity to tissues, elastin also has critical functions in the…
N300798 · 2018-10-17 — The tariff classification of Various Chemical Compounds from China and/or Canada
You indicate they are all used for research at laboratories and universities. You provided the following information on the five items under review. Item 1 DAB Tetrahydrochloride, Hydrate (CAS #868272-85-9) is a water soluble form of 3-3'-diaminobenzidine and is used to stain for peroxidase activity. The intensity of DAB staining can be increased with the addition of cobalt, nickel or silver ions. The product is imported as a light pink to light lavender powder. The product's country of origin is China. Item 2 Paromomycin Sulfate, (CAS #1263-89-4) is an aminoglycoside antibiotic. It targets a…
N300742 · 2018-10-12 — The tariff classification, country of origin and status under the NAFTA of two products A Skin Mimicking Material and the Chemical Compound 1,2-Bis(2,4-dimethyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-1-cyclopentene (CAS registry number 172612-67-8)
N300742 October 12, 2018 CLA-2-38:OT:RR:NC:N1:139 CATEGORY: Classification and Country of Origin Status under the North American Free Trade Agreement (NAFTA) TARIFF NO.: 3824.99.9297 and 2934.99.3900 Maureen Celmer Welke Customs Brokers USA, Inc. 36 Delaware St Tonawanda NY 14032 RE: The tariff classification, country of origin and status under the NAFTA of two products: A Skin Mimicking Material and the Chemical Compound 1,2-Bis(2,4-dimethyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-1-cyclopentene (CAS registry number 172612-67-8) Dear Ms. Celmer, In your letter dated September 21, 2018,…
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