2-(N-Methyl-N-ethylamino)ethanethiol from Canada
Mixed methyl-ethyl substituted aminoethane-2-thiol, a chemically defined organo-sulfur compound. Fits HTS 2930.90.92.22 criteria using permitted dialkyl groups (methyl, ethyl) explicitly listed in heading description. Serves as building block for nitrogen-sulfur chelators.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm via mass spec no dimethyl impurity exceeding 0.1%; trace excluded isomers disqualify
• Use glass-lined containers; corrosive to metals due to thiol reactivity
• Pre-register under TSCA if research quantities; industrial intermediates exempt