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6141-55-5

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6141-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6141-55-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,4 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 6141-55:
(6*6)+(5*1)+(4*4)+(3*1)+(2*5)+(1*5)=75
75 % 10 = 5
So 6141-55-5 is a valid CAS Registry Number.

6141-55-5Relevant articles and documents

Rationale for Predominance of 1,3-Dipolar Cycloreversion in Thermolysis of 3,4-Dihydropyrazole from Ethano-bridged Diphenyldiazomethane and 2,5-Dimethyl-1,4-benzoquinone. An X-Ray Study

Oshima, Takumi,Kawamoto, Tatsuya,Kuma, Hiro,Kushi, Yoshihiko,Nagai, Toshikazu

, p. 1937 - 1938 (1995)

The X-ray crystal structure of the title dihydropyrazole indicates that the steric and ?-conjugative effects associated with the conformational locking of the two phenyl rings are the crucial factors in the predominance of 1,3-dipolar cycloreversion rather than nitrogen extrusion to give the cyclopropane derivative.

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