Methyllithium (15% in Diethyl Ether) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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