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157843-81-7

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157843-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157843-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,8,4 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157843-81:
(8*1)+(7*5)+(6*7)+(5*8)+(4*4)+(3*3)+(2*8)+(1*1)=167
167 % 10 = 7
So 157843-81-7 is a valid CAS Registry Number.

157843-81-7Relevant articles and documents

Efficient and selective hydrogenation of C-O bonds with a simple sodium formate catalyzed by nickel

Xi, Xiaoxiang,Chen, Tieqiao,Zhang, Ji-Shu,Han, Li-Biao

supporting information, p. 1521 - 1524 (2018/02/19)

A Ni-catalyzed hydrogenation of C-O compounds with sodium formate is developed. Various esters, i.e. aryl, alkenyl, benzyl pivalates, and even the aryl ethers, were efficiently reduced with a loading of nickel catalysts down to 0.5 mol%. Reactive functional groups such as C-C double bonds, carbonyl, CN, MeS and halogen groups are tolerable. This reaction can be used for the modification of complex molecules and carried out at a large scale.

Metal-free reductive cleavage of benzylic esters and ethers: Fragmentations result from single and double electron transfers

Doni, Eswararao,O'Sullivan, Steven,Murphy, John A.

supporting information, p. 2239 - 2242 (2013/03/28)

The mechanisms for the reductive cleavage of benzylic esters and ethers by neutral organic electron donor 1 are different (see scheme). Products isolated from the cleavage of benzylic ethers result from the transfer of two electrons, without the intermediacy of benzyl radicals, which are believed to be intermediates in the reductive cleavage of benzylic esters. Copyright

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