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1276031-07-2

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1276031-07-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1276031-07-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,6,0,3 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1276031-07:
(9*1)+(8*2)+(7*7)+(6*6)+(5*0)+(4*3)+(3*1)+(2*0)+(1*7)=132
132 % 10 = 2
So 1276031-07-2 is a valid CAS Registry Number.

1276031-07-2Downstream Products

1276031-07-2Relevant articles and documents

Base-mediated regio- and stereoselective intermolecular addition of alkynes to N-heterocycles

Verma, Akhilesh Kumar,Joshi, Megha,Singh, Ved Prakash

supporting information; experimental part, p. 1630 - 1633 (2011/05/03)

The regio- and stereoselective addition of N-heterocycles to alkynes using KOH is reported. Formation of (Z)-isomers and their conversion to (E)-products were found to be dependent upon time as well as the choice of base. Selective attack of N-heterocycles on a more electrophilic alkynyl carbon was supported by DFT calculations, and the stereochemistry of the products was established by X-ray crystallographic studies and intramolecular cyclization of ortho-haloalkynes in indolo-[2,1-a]isoquinolines.

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