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(4R,5S,1'R)-5-<2'-<(tert-Butyldiphenylsilyl)oxy>-1'-hydroxyethyl>-4-hydroxy-2-oxo-1-oxacyclopentane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

172293-71-9

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172293-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172293-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,9 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 172293-71:
(8*1)+(7*7)+(6*2)+(5*2)+(4*9)+(3*3)+(2*7)+(1*1)=139
139 % 10 = 9
So 172293-71-9 is a valid CAS Registry Number.

172293-71-9Relevant academic research and scientific papers

Synthesis of a 3-Deoxy-D-arabino-2-heptulosonic Acid Derivative

Devianne, Gerard,Escudier, Jean-Marc,Baltas, Michel,Gorrichon, Liliane

, p. 7343 - 7347 (1995)

The synthesis of a selectively protected 3-deoxy-D-arabino-2-heptulosonic acid, 9, from a non-carbohydrate precursor was achieved in six steps (19percent yield) from a chiral, γ,δ-epoxy β-hydroxy ester, 3a, readily available from the corresponding α,β-epoxy aldehyde.The product was obtained through a Lewis acid-mediated stereocontrolled lactonization of 3a followed by a two-step procedure: synthesis of Weinreb's amide 5a and lithiothiazole nucleophilic attack allowing the introduction of the masked aldehydo frame.

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