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537040-39-4

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537040-39-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 537040-39-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,3,7,0,4 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 537040-39:
(8*5)+(7*3)+(6*7)+(5*0)+(4*4)+(3*0)+(2*3)+(1*9)=134
134 % 10 = 4
So 537040-39-4 is a valid CAS Registry Number.

537040-39-4Relevant articles and documents

1,7-Electrocyclization reactions of stabilized α,β:γ,δ-unsaturated azomethine ylides

Tóth, Judit,Dancsó, András,Blaskó, Gábor,Toke, László,Groundwater, Paul W.,Nyerges, Miklós

, p. 5725 - 5735 (2007/10/03)

Stabilized α,β:γ,δ-unsaturated azomethine ylides were generated by the deprotonation of isoquinolinium salts. 1,7-Electrocyclization of these dipoles, followed by a 1,5-hydrogen shift, gives tetrahydro[5,6]azepino[2,1-a]isoquinolines.

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