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445298-98-6

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445298-98-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 445298-98-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,5,2,9 and 8 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 445298-98:
(8*4)+(7*4)+(6*5)+(5*2)+(4*9)+(3*8)+(2*9)+(1*8)=186
186 % 10 = 6
So 445298-98-6 is a valid CAS Registry Number.

445298-98-6Relevant articles and documents

Dynamic thermodynamic resolution of N-methylpseudoephedrine α-bromo esters for asymmetric syntheses of α-hydroxy carboxylic acid derivatives

Nam, Jiyoun,Lee, Sang-Kuk,Park, Yong Sun

, p. 2397 - 2401 (2007/10/03)

An example of dynamic thermodynamic resolution in the nucleophilic substitution reactions of α-bromo esters with an oxygen nucleophile is described. Temperature controlled epimerization-substitution sequence provides a practical protocol for the preparation of highly enantioenriched α-hydroxy carboxylic acid derivatives up to 72% yield with 99:1 er.

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