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957666-40-9

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957666-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 957666-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,6,6 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 957666-40:
(8*9)+(7*5)+(6*7)+(5*6)+(4*6)+(3*6)+(2*4)+(1*0)=229
229 % 10 = 9
So 957666-40-9 is a valid CAS Registry Number.

957666-40-9Downstream Products

957666-40-9Relevant academic research and scientific papers

Electrophile-induced ether transfer: Stereoselective synthesis of 2,4,6-trisubstituted tetrahydropyrans

Kartika, Rendy,Taylor, Richard E.

, p. 6874 - 6877 (2008/09/19)

(Chemical Equation Presented) A negative attack: Synthesis of 4-alkoxy-2,6-cis- and its stereocomplementary 4-alkoxy-2,6-trans- tetrahydropyrans has been achieved in high yield and with excellent stereocontrol by a common strategy: electrophile-induced ether-transfer, cyclization, and functionalization reactions (see scheme; Bn = benzyl; BPS = tert-butyldiphenylsilyl;TBS = tert-butyldimethylsilyl; TEA = triethylamine).

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