N-Ethyl-N-isopropylaminoethane-2-thiol from Japan
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 — Japan → United States
15%
Rate breakdown
9903.04.6211.3%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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