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205692-07-5

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205692-07-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205692-07-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,6,9 and 2 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 205692-07:
(8*2)+(7*0)+(6*5)+(5*6)+(4*9)+(3*2)+(2*0)+(1*7)=125
125 % 10 = 5
So 205692-07-5 is a valid CAS Registry Number.

205692-07-5Relevant articles and documents

Attainment of syn-selectivity for boron-mediated asymmetric aldol reactions of carboxylic esters

Liu, Ji-Feng,Abiko, Atsushi,Pei, Zhonghua,Buske, Dana C.,Masamune, Satoru

, p. 1873 - 1876 (2007/10/03)

A new chiral reagent for syn-selective aldol reactions has been developed based on the recent finding that the stereochemistry of the boron-mediated aldol reaction of a carboxylic ester is controlled by the bulkiness of the alcohol moiety of the ester, by the proper choice of reagents, and by the enolization conditions. This readily available, inexpensive reagent has been utilized in studies directed towards the synthesis of the macrolide tedanolide.

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