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108893-72-7

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108893-72-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108893-72-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,8,9 and 3 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 108893-72:
(8*1)+(7*0)+(6*8)+(5*8)+(4*9)+(3*3)+(2*7)+(1*2)=157
157 % 10 = 7
So 108893-72-7 is a valid CAS Registry Number.

108893-72-7Downstream Products

108893-72-7Relevant articles and documents

GRIGNARD AND HYDRIDE ADDITION TO A KETENE INTERMEDIATE: A NOVEL ACCESS TO α-DAMASCONE AND α-CYCLOCITRAL

Naef, Ferdinand,Decorzant, Rene

, p. 3245 - 3250 (2007/10/02)

α-Damascone (1), a rose fragrance chemical, was synthesized by an allylmagnesium chloride addition to ketene 7 as key step.When the same ketene 7 was reduced by two different aluminium hydride reagents, α-cyclocitral was obtained.The presumed intermediates, enolates II and III, were first trapped as silyl enol ethers and then hydrolyzed with D2O to give the expected α-monodeuterated carbonyl compounds.Mixed aluminium hydride reduction of ketenes is recommended as a facile entry into the chemistry of aldehyde enolates.

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