N-Ethyl-N-isopropylaminoethane-2-thiol from Mexico
Mixed dialkyl substituted aminoethane-2-thiol with ethyl and isopropyl groups on nitrogen. Qualifies for HTS 2930.90.92.22 as it uses permitted alkyl groups (ethyl, isopropyl) in the N,N-dialkyl aminoethane-2-thiol definition, excluding only specific dimethyl/diethyl. Applied in metal chelation chemistry and drug development.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Label with exact alkyl composition; mixed substituents common pitfall for wrong subheading
• Include proton NMR data in entry docs to confirm structure matches heading description
• Check for protonated salt form; declare as such since salts included in this HTS provision