2930.90.92.22/2-(N-Methyl-N-ethylamino)ethanethiol/Japan

2-(N-Methyl-N-ethylamino)ethanethiol from Japan

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 — 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)

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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