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137041-62-4

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137041-62-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137041-62-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,4 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137041-62:
(8*1)+(7*3)+(6*7)+(5*0)+(4*4)+(3*1)+(2*6)+(1*2)=104
104 % 10 = 4
So 137041-62-4 is a valid CAS Registry Number.

137041-62-4Relevant articles and documents

Synthesis of Heterocyclic Propellanes by 1,3-Dipolar Cycloaddition of 2,6-Dichlorobenzonitrile Oxide to 2,3-Fused Indoles. Catalytic Hydrogenation of the Cycloadducts

Malamidou-Xenikaki, Elizabeth,Coutouli-Argyropoulou, Evdoxia

, p. 75 - 78 (2007/10/02)

N-Methylcycloalkanoindoles 1a, 1c-d and N-methylindenoindole (1e) react with 2,6-dichlorobenzonitrile oxide (2) to afford regioselectively propellanes 3.Catalytic hydrogenation of compounds 3 proceeds via the labile β-hydroxyimines 4, which are further decomposed to the starting indole and 2,6-dichlorobenzonitrile.In one case the intermediate imine 4e is stable and isolated in pure form. Key Words: Propellanes, heterocyclic / Nitrile oxides / Indoles, 2,3-fused / 1,3-Dipolar cycloaddition

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