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138650-00-7

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138650-00-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138650-00-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,5 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138650-00:
(8*1)+(7*3)+(6*8)+(5*6)+(4*5)+(3*0)+(2*0)+(1*0)=127
127 % 10 = 7
So 138650-00-7 is a valid CAS Registry Number.

138650-00-7Relevant articles and documents

Asymmetric aldol reactions of achiral 2-phenylsulfanyl aldehydes with small- and medium-sized carbocyclic rings: the synthesis of homochiral spirocyclic lactones, pyrrolidines and tetrahydrofurans

Chibale, Kelly,Warren, Stuart

, p. 2411 - 2419 (2007/10/02)

Chiral boron enolates based on the 1,3-oxazolidin-2-one auxiliary react with achiral 1-phenylsulfanylcycloalkanecarbaldehydes in anti- and syn-selective aldol processes to give the corresponding aldol products with moderate to excellent levels of diastereo- and enantio-control.Stereospecific cyclisation via an asymmetric episulfonium (thiiranium) ion leads to optically pure spirocyclic compounds in high chemical yields.

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