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1240787-01-2

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1240787-01-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240787-01-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,7,8 and 7 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1240787-01:
(9*1)+(8*2)+(7*4)+(6*0)+(5*7)+(4*8)+(3*7)+(2*0)+(1*1)=142
142 % 10 = 2
So 1240787-01-2 is a valid CAS Registry Number.

1240787-01-2Downstream Products

1240787-01-2Relevant articles and documents

Cobalt-catalyzed hydroarylation of alkynes through chelation-assisted C-H bond activation

Gao, Ke,Lee, Pin-Sheng,Fujita, Takeshi,Yoshikai, Naohiko

supporting information; experimental part, p. 12249 - 12251 (2010/11/18)

Ternary catalytic systems consisting of cobalt salts, phosphine ligands, and Grignard reagents promote addition of arylpyridines and imines to unactivated internal alkynes with high regio- and stereoselectivities. Deuterium-labeling experiments suggest that the reaction involves chelation-assisted oxidative addition of the aryl C-H bond to the cobalt center and insertion of the C-C triple bond into the Co-H bond, followed by reductive elimination of the resulting diorganocobalt species.

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