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436145-52-7

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436145-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 436145-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,6,1,4 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 436145-52:
(8*4)+(7*3)+(6*6)+(5*1)+(4*4)+(3*5)+(2*5)+(1*2)=137
137 % 10 = 7
So 436145-52-7 is a valid CAS Registry Number.

436145-52-7Relevant articles and documents

A novel approach to the synthesis of amino-sugars. Routes to selectively protected 3-amino-3-deoxy-aldopentoses based on pyridinium salt photochemistry

Lu, Haiyan,Su, Zhuoyi,Song, Ling,Mariano, Patrick S.

, p. 3525 - 3528 (2007/10/03)

A new approach for the synthesis of selectively blocked 3-amino-3-deoxyaldopentoses is presented. The strategy is based on employment of a pyridinium salt photocyclization-aziridine ring-opening sequence to prepare stereochemically defined, enantiomerically enriched aminocyclopentendiol derivatives. Ring-opening reactions transform these substances into terminally differentiated aminopolyols, which serve as precursors to the target aminoaldopentoses. The utility of this strategy is demonstrated by its application to the syntheses of protected derivatives of D- and L-3-amino-3-deoxyxylose, L-3-amino-3-deoxyarabinose, and a late-stage intermediate in a potential route to N-acetylneuraminic acid.

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