Tetra-O-Acetyl-D-Ribose from Japan
Tetra-O-acetyl-D-ribose is a protected ribose sugar ester used in nucleoside analog synthesis for antiviral drugs. Classified HTS 2940.00.60.00 as chemically pure sugar ester not covered by headings 2937-2939. The four acetate groups protect hydroxyls during selective chemical manipulation.
Duty Rate — Japan → United States
21.7%
Rate breakdown
9903.04.629.2%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
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
• Specify anomeric mixture ratio (alpha/beta) in CoA; DEA watch list for nucleoside precursors - ensure end-use statement; Store below 0°C to maintain anomeric integrity during transit