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117672-04-5

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117672-04-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117672-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,7 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117672-04:
(8*1)+(7*1)+(6*7)+(5*6)+(4*7)+(3*2)+(2*0)+(1*4)=125
125 % 10 = 5
So 117672-04-5 is a valid CAS Registry Number.

117672-04-5Relevant articles and documents

Polarized Ketene Dithioacetals; 55: Synthesis of Novel 5-Aryl-2-methylthio-4H-pyran-4-ones from Cinnamoylketene Dithioacetals

Deb, B.,Asokan, C. V.,Ila, H.,Junjappa, H.

, p. 893 - 895 (2007/10/02)

A novel method for the synthesis of 5-aryl-2-methylthio-4H-pyran-4-ones 4a-h has been developed from the corresponding cinnamoylketene dithioacetals 1a-h in three successive steps.In the first step, 1a-h were oxidized with alkaline hydrogen peroxide to gi

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