2931.59.00.30/tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride/Japan

tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride from Japan

Fluorophosphonamidate featuring tert-butyl (C4) on P and mixed methyl/n-propyl on nitrogen, all ≤C10, precisely matching HTS 2931.59.0030 criteria. Serves as building block for nerve agent analogs or therapeutic phosphonates in medicinal chemistry. The specific P-N=alkylidene-fluoride motif defines classification.

Duty Rate — Japan → United States

13.7%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter

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Import Tips

• May require DEA import permit if listed chemical precursor; check Chemical Diversion list annually

• Include synthetic route and purity (>98%) specs to justify 2931 classification vs mixtures