Methyllithium (15% in Diethyl Ether) from Canada
Methyllithium solution contains lithium-carbon bonds defining organolithium classification under 2931.90.90. Used as strong base/non-nucleophile in pharma synthesis; chapter note V(D) classifies metal alcoholates similarly.
Duty Rate — Canada → United States
13.7%
Rate breakdown
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
• UN3393 solution packaging; ether stabilizer must be declared for flammability
• Nucleophilic reagent—DEA watches for diversion to clandestine synthesis
• Verify solvent content doesn't trigger Ch38 mixture classification