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117934-83-5

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117934-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117934-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,3 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117934-83:
(8*1)+(7*1)+(6*7)+(5*9)+(4*3)+(3*4)+(2*8)+(1*3)=145
145 % 10 = 5
So 117934-83-5 is a valid CAS Registry Number.

117934-83-5Relevant articles and documents

ALDOL REACTION OF IODODIFLUOROACETATE-Zn AND 2,2-DIFLUOROKETENE SILYL ACETAL

Kitagawa, Osamu,Taguchi, Takeo,Kobayashi, Yoshiro

, p. 1803 - 1806 (2007/10/02)

Generation of the Reformatsky reagent of difluoroacetate from the iodide(2) and the difluoroketene silyl acetal(3), and their aldol reaction are described.High anti-selectivity with chiral aldehyde (5d, 5f) was found in the case of the ketene silyl acetal(3b). 2,2-Difluoro-2-deoxy analogs of D-ribo- and L-galactopyranosides (1a, 1b) were effectively prepared.

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