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137524-63-1

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137524-63-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137524-63-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,2 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137524-63:
(8*1)+(7*3)+(6*7)+(5*5)+(4*2)+(3*4)+(2*6)+(1*3)=131
131 % 10 = 1
So 137524-63-1 is a valid CAS Registry Number.

137524-63-1Relevant articles and documents

REACTIONS OF HALOGEN-CONTAINING O-SILYLATED ENOLATES. VII. REACTIONS OF HALOGEN-CONTAINING O-SILYLATED ENOLATES WITH SULFENYL CHLORIDES

Shchepin, V. V.,Petukhova, I. Yu.,Nedugov, A. N.,Vakhrin, M. I.

, p. 1510 - 1514 (2007/10/02)

Reactions of halogen-containing O-silylated enolates with arenesulfenyl chlorides lead to aldehydes and ketones containing halogen atoms and an arylthio group in the α position.Reaction between these reactants is accelerated by change from electron-acceptor to electron-donor substituents both in the silyl ether and in the sulfenyl chloride and by the use of polar solvents.For silyl ethers of enols of aldehydes reaction with sulfenyl chlorides proceeds through the stage of the formation of a halogen-containing 2-arylthio-1-halo-1-(trimethylsiloxy)alkane, which is an intermediate 1,2-addition product.

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