tert-Butyl-(Methylpropylamino)ethylidene Phosphonamidic Fluoride from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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