Ribonolactone from China
Ribonolactone, a five-membered furanose lactone from ribose, contains oxygen heteroatom only and is classified under HTS 2932.20.50. Used in nucleotide synthesis.
Duty Rate — China → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Anhydrous grade requires <0.1% water content certification
• Nucleic acid synthesis purity standards exceed general chemical specs
• Cold chain (-20°C) mandatory for activity preservation