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1240659-41-9

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1240659-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240659-41-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,6,5 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1240659-41:
(9*1)+(8*2)+(7*4)+(6*0)+(5*6)+(4*5)+(3*9)+(2*4)+(1*1)=139
139 % 10 = 9
So 1240659-41-9 is a valid CAS Registry Number.

1240659-41-9Relevant articles and documents

Fe(II)-catalyzed amination of aromatic C-H bonds via ring opening of 2 H-azirines: Synthesis of 2,3-disubstituted indoles

Jana, Samaresh,Clements, MacK D.,Sharp, Barry K.,Zheng, Nan

supporting information; experimental part, p. 3736 - 3739 (2010/11/03)

A general method for the synthesis of 2,3-disubstituted indoles is described. The key feature of this method is the amination of aromatic C-H bonds via FeCl2-catalyzed ring opening of 2H-azirines. The method tolerates a variety of functional groups such as Br, F, NO2, OMe, CF3, OTBS, alkenes, and OPiv. The method can also be extended to synthesize azaindoles.

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