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1590392-16-7

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1590392-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1590392-16-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,9,0,3,9 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1590392-16:
(9*1)+(8*5)+(7*9)+(6*0)+(5*3)+(4*9)+(3*2)+(2*1)+(1*6)=177
177 % 10 = 7
So 1590392-16-7 is a valid CAS Registry Number.

1590392-16-7Relevant articles and documents

Stereoselective synthesis of β-D-GlcNAc-(1→4)-D-Glc disaccharide starting from lactose

Guazzelli, Lorenzo,Catelani, Giorgio,D'Andrea, Felicia,Gragnani, Tiziana

, p. 44 - 49 (2014/05/06)

The stereoselective preparation of the β-D-GlcNAc-(1→4)-D-Glc disaccharide starting from known 4-O-[6-O-(1-methoxy-1-methylethyl)-3,4-O- isopropylidene-β-D-talopyranosyl]-2,3:5,6-di-O-isopropylidene-aldehydo-D- glucose dimethyl acetal (2), in turn easily obtained from lactose, is reported. Key steps of this new procedure, that avoids the glycosylation reaction, are (a) a first epimerization at C-4' through an unusual procedure involving a completely stereospecific hydroboration-oxidation of the enol ether group of the hex-4-enopyranoside 4, obtained from 3 by base promoted acetone elimination, (b) an amination with inversion by S reaction on an imidazylate intermediate, and, finally, (c) N-acetylation followed by complete deprotection.

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