High-Purity Dibutylthiourea (Lab Grade) from Japan
Laboratory-grade dibutylthiourea at 99.5% purity, packaged in small quantities for chemical research and analysis. Meets Chapter 29 criteria as a separate chemically defined organic compound under heading 2930.90.71.00. Used in synthetic organic chemistry and polymer testing applications.
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 lot-specific CoA and NMR spectrum confirming structure to distinguish from mixtures
• Declare as 'research chemical' with CAS 5392-85-6; lab packaging <1kg often qualifies for simplified entry
• Comply with DEA precursor chemical regulations if end-use involves controlled substance synthesis pathways