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143901-45-5

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143901-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143901-45-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,0 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 143901-45:
(8*1)+(7*4)+(6*3)+(5*9)+(4*0)+(3*1)+(2*4)+(1*5)=115
115 % 10 = 5
So 143901-45-5 is a valid CAS Registry Number.

143901-45-5Downstream Products

143901-45-5Relevant articles and documents

Cyclization Reactions of Molybdenum and Chromium Carbene Complexes with 1,6- and 1,7-Enynes: Effect of Tether Length and Composition

Harvey, Daniel F.,Lund, Kevin P.,Neil, David A.

, p. 8424 - 8434 (1992)

It has been observed that the reaction of 1,6- and 1,7-enynes with pentacarbonyl(butylmethoxycarbene)molybdenum(0) (18) produces vinylcyclopropanes in good to excellent yield.A systematic investigation into the factors which govern the success of these cyclizations has been performed.Chromium carbene complexes also lead to the formation of vinylcyclopropanes but in significantly lower yields.When the pathway to vinylcyclopropanes is not followed, a number of other distinct types of products are obtained.The pathways leading to these various products are discussed and compared.

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