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40337-69-7

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40337-69-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40337-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,3 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40337-69:
(7*4)+(6*0)+(5*3)+(4*3)+(3*7)+(2*6)+(1*9)=97
97 % 10 = 7
So 40337-69-7 is a valid CAS Registry Number.

40337-69-7Relevant articles and documents

THE SURVIVAL OF TERT-BUTYLDIMETHYLSILYL GROUP OF SILYL ENOL ETHERS IN THE REACTION WITH DIMETHYL(METHYLENE)AMMONIUM IODIDE. REGIOSELECTIVE SYNTHESIS OF TERT-BUTYLDIMETHYLSILYL ENOL ETHERS CONTAINING AN AMINO GROUP.

Wada, Makoto,Nishihara, Yoshihiro,Akiba, Kin-ya

, p. 5405 - 5408 (2007/10/02)

t-Butyldimethylsilyl enol ethers containing an amino group were obtained in good yields (70-90percent) by the reaction of t-butyldimethylsilyl enol ethers with dimethyl(methylene)ammonium iodide (the Eschenmoser salt).

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