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
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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