Chapter 2940 — Customs Tariff Headings
Products classified under Tariff item 29.40
Benzyl Alpha-D-Mannopyranoside
Benzyl Alpha-D-Mannopyranoside is a chemically pure sugar ether with a benzyl group attached to mannose. It is used as a protecting group reagent in oligosaccharide synthesis. As a sugar ether not covered by headings 2937 to 2939, it falls under this tariff item.
2940.00.00D-Arabinose 99+% ACS Reagent
D-Arabinose 99+% ACS Reagent is a high-purity aldopentose sugar meeting American Chemical Society specifications. It is used in analytical chemistry and organic synthesis as a starting material or standard. As a chemically pure sugar not excluded by the tariff item, it is classified here.
2940.00.00D-Arabinose Anhydrous Crystals
D-Arabinose Anhydrous Crystals are chemically pure sugar crystals with controlled water content below 0.5%. They are used in moisture-sensitive carbohydrate chemistry applications. This product qualifies as a chemically pure sugar under the tariff item.
2940.00.00D-Arabinose Cell Culture Grade
D-Arabinose Cell Culture Grade is a chemically pure sugar tested for use in mammalian cell growth media. It has low endotoxin levels and is certified pyrogen-free for biological research. As a pure sugar for laboratory use, it falls under this tariff item.
2940.00.00D-Arabinose Powder
D-Arabinose Powder is a chemically pure aldopentose sugar supplied as a white crystalline powder for laboratory research. It is epimeric at C-2 with D-ribose and used in various biochemical applications. This product is classified as a chemically pure sugar under the tariff item.
2940.00.00D-Arabinose [U-13C5] Uniformly Labeled
D-Arabinose [U-13C5] Uniformly Labeled is a chemically pure sugar with all five carbons replaced by carbon-13 at 98% enrichment. It is used in advanced metabolomics and flux analysis by mass spectrometry or NMR. As an isotopically substituted pure sugar, it falls under this tariff item.
2940.00.00D-Arabinose USP Reference Standard
D-Arabinose USP Reference Standard is a pharmaceutical-grade sugar certified for analytical method validation and quality control. It meets USP specifications for purity and performance. As a chemically pure sugar, it is classified under this tariff item.
2940.00.00Ethyl Beta-D-Galactopyranoside
Ethyl Beta-D-Galactopyranoside is a chemically pure sugar ether derived from galactose with an ethyl group at the anomeric position. It is used in glycosylation reactions and carbohydrate chemistry research. This sugar ether is classified under the tariff item.
2940.00.00Galactose Pentaacetate
Galactose Pentaacetate is a chemically pure sugar ester where all hydroxyl groups of galactose are acetylated. It is used in complex carbohydrate synthesis as a protected sugar. As a sugar ester not excluded, it falls under this tariff item.
2940.00.00Glucose Pentaacetate
Glucose Pentaacetate is a chemically pure sugar ester where all five hydroxyl groups of glucose are esterified with acetic acid. It is used in carbohydrate chemistry as a protected glucose derivative. This sugar ester is classified under the tariff item.
2940.00.00High Purity D-Arabinose 99.9%
High Purity D-Arabinose 99.9% is an ultra-high purity sugar used for quantitative NMR standards and isotopic purity reference materials. Its single enantiomer is confirmed by polarimetry and chiral HPLC. This chemically pure sugar falls under the tariff item.
2940.00.00Labeled D-[1-13C]Arabinose
Labeled D-[1-13C]Arabinose is a chemically pure sugar where the first carbon is replaced with the carbon-13 isotope. It is used in NMR spectroscopy and metabolic flux analysis to trace biochemical pathways. As a chemically pure sugar other than those excluded, it falls under this tariff item.
2940.00.00Maltose Octaacetate
Maltose Octaacetate is a chemically pure sugar ester with eight acetate groups on the disaccharide maltose. It is used in selective glycosylation and polymer chemistry. As a sugar ester, it falls under this tariff item.
2940.00.00Methyl Alpha-D-Glucopyranoside
Methyl Alpha-D-Glucopyranoside is a chemically pure sugar ether where a methyl group is attached to the anomeric oxygen of glucose. It is used in carbohydrate research and synthesis. This sugar ether is classified under the tariff item.
2940.00.00Sucrose Octaacetate
Sucrose Octaacetate is a chemically pure sugar ester where all eight hydroxyls of sucrose are acetylated. It is used as a bittering agent and in polymer crosslinking applications. Despite its sucrose base, the ester form is classified under this tariff item.