Cas 61193-43-9,2,5-Diphenyl-3-(phenylseleno)pyrrolidin

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Check Digit Verification of cas no

The CAS Registry Mumber 61193-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,1,9 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 61193-43:
(7*6)+(6*1)+(5*1)+(4*9)+(3*3)+(2*4)+(1*3)=109
109 % 10 = 9
So 61193-43-9 is a valid CAS Registry Number.

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61193-43-9Relevant articles and documents

1,3-Anionic Cycloadditions, XVIII - Extension of the Scope of 1,3-Anionic Cycloadditions by Activating Organoelement Groups

Kauffmann, Thomas,Ahlers, Holger,Echsler, Klaus-Josef,Schulz, Herbert,Tilhard, Hans-Joachim

, p. 4496 - 4506 (2007/10/02)

The organoelement groups PhS-, PhSe-, Ph2P-, Ph2As-, Ph3Ge-, Ph2(O)P-, and Ph2(O)As- make possible the cycloaddition of 2-azaallyllithium compounds to the double bond of ethene, whereas the groups PhTe-, Ph2Sb-, Ph3Sn-, and Ph3Pb- fail to do this.

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61193-43-9