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1268368-57-5

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1268368-57-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1268368-57-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,8,3,6 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1268368-57:
(9*1)+(8*2)+(7*6)+(6*8)+(5*3)+(4*6)+(3*8)+(2*5)+(1*7)=195
195 % 10 = 5
So 1268368-57-5 is a valid CAS Registry Number.

1268368-57-5Relevant articles and documents

Chirality transfer in Au-catalyzed cyclization reactions of monoallylic diols: Selective access to specific enantiomers based on olefin geometry

Aponick, Aaron,Biannic, Berenger

, p. 1330 - 1333 (2011/05/15)

The gold(I)-catalyzed cyclization of monoallylic diols to form tetrahydropyrans is shown to be highly stereoselective when chiral allylic alcohols are employed. Substrates that differ only in olefin geometry provide enantiomeric products from formal SN2′ reactions in high yields with excellent chirality transfer. The allylic alcohol stereochemistry also efficiently controls the facial selectivity when the substrates include additional stereocenters.

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