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138042-39-4

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138042-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138042-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,0,4 and 2 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138042-39:
(8*1)+(7*3)+(6*8)+(5*0)+(4*4)+(3*2)+(2*3)+(1*9)=114
114 % 10 = 4
So 138042-39-4 is a valid CAS Registry Number.

138042-39-4Downstream Products

138042-39-4Relevant articles and documents

Synthesis of cyclopentanoids via enyne cycloaddition reaction using methylmanganese carbonyl complex

Lee, Joo Eun,Hong, Soon Hyeok,Chung, Young Keun

, p. 1781 - 1784 (2007/10/03)

Methylmanganese pentacarbonyl-mediated transformation of enynes to cyclopropanated bicyclic compounds and cyclopentanes bearing an exocyclic double bond has been carried out. Control of the product distribution can be achieved by changing reaction conditi

REACTIONS OF ENYNES WITH ADSORBED METAL-CARBENES

Katz, Thomas J.,Yang, Ginger Xu-Quiang

, p. 5895 - 5898 (2007/10/02)

Adsorbed on silica-gel or on other adsorbants (MgSO4, Na2SO4, or Na2CO3), but not in homogeneous solution, pentacarbonyl(methoxyethylidene)chromium combines with simple enynes to give bicyclohexanes.The method's usefulness is illustrated by the synthesis of a variaty of previously unknown structures from simple hydrocarbons, ethers, and amines.

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