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152870-51-4

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152870-51-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 152870-51-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,8,7 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 152870-51:
(8*1)+(7*5)+(6*2)+(5*8)+(4*7)+(3*0)+(2*5)+(1*1)=134
134 % 10 = 4
So 152870-51-4 is a valid CAS Registry Number.

152870-51-4Relevant articles and documents

Synthesis of 2,6-Dideoxy-4-S-Methyl-4-Thio-D-ribo-Hexopyranose, A Component of the Esperamicin Oligosaccharide

Dupradeau, Francois-Yves,Prandi, Jacques,Beau, Jean-Marie

, p. 3205 - 3220 (2007/10/02)

Two synthetic approaches to 2,6-dideoxy-4-S-methyl-4-thio-D-ribo pyranose, a component of the oligosaccharide of esperamicins are described.An asymmetric synthesis, starting from the propargylic alcohol dimer, relies on the Sharpless asymmetric epoxidation and the regioselective opening of epoxy alcohols.The other synthesis is based on stereocontrolled transformations of a readily available sugar precursor, D-galactose.

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