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1251957-86-4

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1251957-86-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1251957-86-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,1,9,5 and 7 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1251957-86:
(9*1)+(8*2)+(7*5)+(6*1)+(5*9)+(4*5)+(3*7)+(2*8)+(1*6)=174
174 % 10 = 4
So 1251957-86-4 is a valid CAS Registry Number.

1251957-86-4Relevant articles and documents

Application of biocatalysis towards asymmetric reduction and hydrolytic desymmetrisation in the synthesis of a β-3 receptor agonist

Badland, Matthew,Burns, Michael P.,Carroll, Robert J.,Howard, Roger M.,Laity, Daniel,Wymer, Nathan J.

, p. 2888 - 2894 (2011/12/05)

Chemoenzymatic syntheses of two key intermediates in the preparation of a potent β-3 receptor agonist 1 are described. A lipase-catalysed hydrolytic desymmetrisation is employed in a new synthesis of intermediate 7, which avoids the use of alkyl-tin reagents. A second biotransformation delivers chiral chlorohydrin 5 from its parent ketone in greater enantiomeric excess than the previously-described Noyori-reduction process. A brief discussion of the enantioselectivity of a set of single-point mutants of Sporobolomyces salmonicolor aldehyde reductase in this bioreduction is also presented.

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