Adamantane from Japan
Adamantane (C10H16) is a highly symmetrical tricyclic cyclane used in pharmaceutical intermediates and materials science. It falls under HTS 2902.19.0050 as a complex cyclane structure not specifically enumerated elsewhere.
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
• Include NMR spectra verification of adamantane's characteristic cage structure for Customs review
• Ship under IATA/IMO regulations as flammable solid; maintain inert atmosphere packaging
• Provide end-use statements distinguishing research chemical from bulk solvent applications