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137963-68-9

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137963-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137963-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,9,6 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137963-68:
(8*1)+(7*3)+(6*7)+(5*9)+(4*6)+(3*3)+(2*6)+(1*8)=169
169 % 10 = 9
So 137963-68-9 is a valid CAS Registry Number.

137963-68-9Downstream Products

137963-68-9Relevant articles and documents

New Trialkylsilyl Enol Ether Chemistry: α-N-Tosylamination of Triisopropylsilyl Enol Ethers

Magnus, Philip,Lacour, Jerome,Coldham, Iain,Mugrage, Benjamin,Bauta, William B.

, p. 11087 - 11110 (2007/10/02)

Triisopropylsilyl enol ethers react with (TsN)2Se to give α-N-tosylamino derivatives in modest to good yields.In the absence of 1,3-diaxial interactions the N-tosylamino group prefers an axial conformation.The axial N-tosylamino derivatives can be readily transformed into the azabicyclononane skeleton, the core structure of a number of alkaloids.

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