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16867-64-4

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16867-64-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16867-64-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,6 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 16867-64:
(7*1)+(6*6)+(5*8)+(4*6)+(3*7)+(2*6)+(1*4)=144
144 % 10 = 4
So 16867-64-4 is a valid CAS Registry Number.

16867-64-4Relevant articles and documents

Rare keto-aldoses from enzymatic oxidation: Substrates and oxidation products of pyranose 2-oxidase

Freimund, Stefan,Huwig, Alexander,Giffhorn, Friedrich,Koepper, Sabine

, p. 2442 - 2455 (2007/10/03)

Pyranose oxidases are known to oxidise D-glucose, D-xylose and L- sorbose to keto-aldoses, biochemically interesting compounds that may also be used for synthetic purposes in a variety of reactions. In this study pyranose oxidase from the basidiomycete Peniophora gigantea was investigated, and it was found that this enzyme is able to oxidise a broad variety of substrates very effectively. In analogy to its natural mode of action, most substrates are oxidised regioselectively in position 2. Certain compounds, however, are converted into 3-keto derivatives, and the enzyme even exhibits transfer potential, that is, disscharides are formed from β-glycosides of higher alcohols. Substrates that may be oxidised at C-2 in yields between 40-98% are D-allose, D-galactose, 6-deoxy-D-glucose, D-gentiobiose, α-D-glucopyranosyl fluoride and the very interesting 3-deoxy-D-glucose. 1,5-Anhydro-D-glucitol (1-deoxy-D-glucose) is very effectively oxidised in position 2 in 98% yield and additionally gives a product of dioxidation at C-2 and C-3 upon prolonged reaction time Selective oxidation at C-3 was found for 2-deoxy-D-glucose in very good yields and for methyl β-D-gluco- and methyl β-galactopyranoside in lower yields. All oxidation products were unequivocally characterised by NMR spectroscopy and/or chemical derivatisation. In addition, the kinetic data of the enzymatic reactions were determined for all substrates. On the basis of these data and the structural characteristics of the substrates, a model for the minimal structural requirements of the enzyme-substrate interaction is suggested. The enzyme presumably uses two different binding modes for the regioselective C-2 and the C-3 oxidations, which are described.

Oxidation of 2-deoxy-D-arabino-hexose ("2-deoxy-D-glucose") by alkaline hydrogen peroxide

Isbell, Horace S.,Frush, Harriet L.,Soontracharoen, Preeda

, p. C7 - C10 (2007/10/02)

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