N-Ethyl-N-isopropylphosphoramidic dichloride from Mexico
This compound features mixed N-ethyl and N-isopropyl dialkyl groups with dichloride, directly under HTS 2929.90.50.18 for specified N,N-dialkyl phosphoramidic dihalides. It acts as a reagent in nucleotide analog synthesis for antiviral drugs. Classification follows Chapter 29's rule for nitrogen-function compounds last in numerical order.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Ensure labeling specifies exact alkyl groups to match subheading; mismatches lead to 2929.90.50.00 classification
• For air/sea freight, comply with IATA/IMDG corrosive regulations; test for hydrolytic stability