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170169-75-2

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170169-75-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170169-75-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,1,6 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 170169-75:
(8*1)+(7*7)+(6*0)+(5*1)+(4*6)+(3*9)+(2*7)+(1*5)=132
132 % 10 = 2
So 170169-75-2 is a valid CAS Registry Number.

170169-75-2Relevant articles and documents

Preparation of Silyl Enol Ethers Derived from α-Phenylseleno aldehydes and α-Phenylseleno ketones

Ponthieux, Sylvain,Outurquin, Francis,Paulmier, Claude

, p. 9569 - 9580 (1995)

The best experimental conditions for the preparation of trimethylsilyl enol ethers 3 from α-phenylseleno aldehydes 1, compatible with a limited deselenenylation of the substrate, were studied.Starting from α-phenylseleno ketones 2, the enoxysilanes 4, bearing a vinylic PhSe group, are the major products when triethylamine is the base.Trimethylsilyl enol ethers 5 with an allylic PhSe group are also formed beside 4 when LDA or KH are used at lower temperatures.

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