Diethyl L-Tartrate from Mexico
Diethyl L-tartrate is the ethyl ester of L-tartaric acid, but pure esters derive classification from the parent acid under chapter note 5(B), placing it with tartaric acid in HTS 2918.12.00.00. Used as a chiral auxiliary in asymmetric synthesis.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• ,TSCA notification required for new uses; provide synthesis route if queried
• Package under nitrogen to prevent hydrolysis during ocean transit